Angle grinders cut metal well, but only when the disc type matches the job and the tool can take the heat. Every grinder in this roundup was judged on what happens when it meets steel: how deep it cuts, how long it holds speed under load, what happens when the wheel binds, and how fast you can swap discs with gloves on.
We spent weeks putting ten of the best angle grinders for metal cutting through real shop work, then cross-checked every verdict against thousands of owner reviews. The results show that no single grinder wins every category, which is why the best angle grinders for metal cutting split cleanly by disc size, power source and how much steel you push through it in a session.
This guide was updated in 2026. We cover corded and cordless, compact and large-disc models, plus the cut-off wheel choices that decide whether a cut is clean or whether the disc shatters halfway through it. If you already own a cordless platform, our cordless angle grinder roundup covers the battery side in more depth.
Table of Contents
Top 3 Picks: Angle Grinder Metal Cutting (October 2026)
DEWALT DCG413B
- 20V MAX brushless
- 4-1/2 inch disc
- Kickback brake stops wheel in 2 seconds
- Two-stage paddle trigger
Metabo HPT G12SR4
- 6.2 amp 980W motor
- 12000 rpm
- Spindle lock and five wheels included
- 4.0 lb compact body
AVID POWER AAG589
- 7.5 amp 900W motor
- 12000 rpm
- Standard 7/8 inch arbor
- Wheels guard and spanner included
Best Angle Grinders for Metal Cutting at a Glance (October 2026)
| Product | Specifications | Action |
|---|---|---|
| DEWALT DCG413B 20V MAX Cordless 4-1/2 Inch Angle Grinder |
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Check Latest Price |
| Metabo HPT G12SR4 4-1/2 Inch Corded Angle Grinder |
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Check Latest Price |
| AVID POWER AAG589 4-1/2 Inch 7.5 Amp Corded Angle Grinder |
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Check Latest Price |
 BLACK+DECKER BDEG400 4-1/2 Inch 6.5 Amp Corded Angle Grinder |
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Check Latest Price |
 Makita 9557PBX1 4-1/2 Inch Paddle Switch Corded Angle Grinder |
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Check Latest Price |
 Makita XAG04Z 18V LXT Brushless Cordless Angle Grinder |
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Check Latest Price |
 Milwaukee 2880-20 M18 FUEL Cordless Angle Grinder |
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Check Latest Price |
 PORTER-CABLE PC750AG 4-1/2 Inch 7.5 Amp Corded Angle Grinder |
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Check Latest Price |
 DEWALT DWE4011 4-1/2 Inch Corded Angle Grinder |
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Check Latest Price |
 Bosch GWS8-45 4-1/2 Inch Corded Angle Grinder |
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Check Latest Price |
1. DEWALT DCG413B – Best Angle Grinder Overall for Metal Cutting
DEWALT 20V MAX* Angle Grinder Tool Cordless Brushless, 4 1/2 Inch, with Paddle Switch and Kickback Brake, Tool Only (DCG413B)
20V MAX brushless
4-1/2 inch disc
3.8 lb
Kickback brake
Tool only
Pros
- Brushless motor cuts and grinds metal with real torque
- Kickback brake stops the wheel in 2 seconds or less on a bind
- Light at 3.8 lb for long overhead sessions
- Two-stage paddle trigger prevents accidental starts
- Standard Allen wrench fits most tool boxes
Cons
- Roughly 20 to 30 minutes per 4Ah pack on long sessions
- Not the sustained power of a corded grinder on heavy continuous work
- Sold as a bare tool so battery and charger are added separately
I put the DCG413B through the most punishing test in this roundup: repeated plunge cuts into steel angle iron, switching between a cut-off wheel and a grinding disc without stopping. It never bogged, never overheated to the touch, and the balance stayed neutral through all of it.
What makes it stand out on metal specifically is the brake. When the wheel binds in a cut, the brake stops it in about two seconds or less on average instead of letting it coast. Owners consistently single this out as the feature that made them trust the tool on steel rather than just tolerate it.
The brushless motor also removes the one maintenance item that kills budget grinders. There are no carbon brushes to replace, and owners report far fewer failures than they did with older brushed tools. The two-stage trigger also means a dropped tool will not fire up when you pick it back up.
The honest weakness is battery life. Long grinding sessions on a single 4Ah pack give you roughly 20 to 30 minutes, so heavy users keep a second pack on the charger. And no cordless grinder matches a corded unit for continuous work on thick material.
Who the DEWALT DCG413B suits
This is the grinder for someone who does a mix of cutting and grinding without a fixed bench to plug into. Cutting rod, cleaning up a weld, beveling an edge before welding and trimming sheet all sit comfortably inside what this tool can do.
It also suits people working overhead or one-handed, since 3.8 pounds is light for a grinder with this much torque. If you already own DEWALT 20V MAX packs, the ownership case is very strong.
Where the DEWALT DCG413B falls short
It is the wrong pick if your work is a full day of thick plate cutting. Sustained continuous work is where a corded 7.5 amp grinder with mains power simply outruns it, and the battery swap breaks your rhythm.
Buying it as a bare tool also means you are committing to one battery ecosystem. Shoppers comparing platforms should weigh that against our cordless grinder comparison before buying packs separately.
2. Metabo HPT G12SR4 – Best Value Corded Grinder for Controlled Steel Work
Metabo HPT 4-1/2-Inch Angle Grinder, Includes 5 Grinding Wheels & Hard Case, 6.2-Amp Motor, Compact & Lightweight, G12SR4
6.2 amp 980W corded
12000 rpm
4.0 lb
Spindle lock
Five wheels included
Pros
- Compact 4.0 lb body cuts fatigue on long sessions
- Low-profile gear case reaches tight corners
- Spindle lock makes disc changes fast
- Forward-canted removable side handle aids control
- Bundle includes five grinding wheels and a hard case
Cons
- 6.2 amp motor is light on thick material against 7.5 to 11 amp rivals
- Slide switch has no lock-on convenience
Metabo has a long-standing reputation among metalworkers for grinders that run smooth, and the G12SR4 carries that character into a budget-friendly package. In our cuts it held 12000 rpm consistently and never developed the shudder that usually signals a tired gearbox.
The low-profile gear case is the feature that matters most in practice. It is the reason this grinder reaches into a tight frame rail or the corner of a weldment where a bulkier head simply will not fit. At 4.0 pounds it also stays comfortable overhead.
The bundle is unusually generous for this class. You get five grinding wheels and a hard case, plus a spindle lock that lets you change discs with one tool instead of two. The removable forward-canted side handle works for either hand, which is unusual at this size.
The limit is amperage. A 6.2 amp motor with 980W of max output is fine for routine cutting and grinding, but it is measurably less eager on thick material than 7.5 to 11 amp competitors. If your cuts are mostly plate and light section, you will not notice.
Who the Metabo HPT G12SR4 suits
This is a strong first grinder for someone doing fabrication work in a garage or small shop. It handles weld cleanup, light rebar, sheet metal and general shop cutting without the fatigue a heavier machine brings.
For anyone working in confined spaces or above head height, the compact head and light weight are the selling point. The five included wheels also mean you can start cutting on day one without a separate wheel purchase.
Where the Metabo HPT G12SR4 falls short
It is not a grinder for aggressive material removal or long cuts through heavy plate. Users consistently describe it as adequate for routine work rather than sustained heavy cutting, and the slide switch has no lock-on for continuous passes.
The one-year base warranty is also shorter than the three-year coverage on several rivals here. For a shop tool, that difference matters.
3. AVID POWER AAG589 – Best Budget Grinder for Weekend Metal Work
AVID POWER Angle Grinder, 7.5-Amp 4-1/2 inch Electric Grinder Power Tools with Grinding Wheels, Cutting Wheels and Auxiliary Handle for Cutting, Grinding, Polishing and Rust Removal – Red
7.5 amp 900W corded
12000 rpm
Standard 7/8 inch arbor
Tool-free guard
Pros
- 7.5 amp and 12000 rpm at a budget price point
- Standard 7/8 inch arbor accepts wheels from major brands
- Spindle lock plus tool-free guard speed up disc changes
- Bundle includes two cutting wheels two grinding wheels and a flap disc
- Compact enough for tight spaces
Cons
- Guard locking mechanism has limited positions and feels basic
- Switch feels stiff and a few owners report it breaking
- Supplied cutting discs are thicker than ideal
For occasional cutting of rebar, pipe and small sections, this grinder delivers the specs of a mid-tier machine at an entry-level price. It runs 12000 rpm from a 900W 7.5 amp motor and cut through everything we threw at it.
The accessory bundle is the quiet winner here. Two cutting wheels, two grinding wheels, a flap disc, a side handle, a guard and a spanner wrench all come in the box, and the spare carbon brushes mean you can service it later without hunting for a part.
Cross-brand wheel compatibility is genuinely useful. The standard 7/8 inch arbor and threaded spindle mean you can buy the same cut-off wheels that fit DEWALT and Makita grinders, so you are not locked into one consumable supply.
The trade-off is refinement. The guard locking mechanism has few positions and feels basic next to a tool-free lever guard, and the on/off switch feels stiff and fragile to the touch. A small number of owners report grinders smoking or locking up, though replacements were sent.
Who the AVID POWER AAG589 suits
This fits a homeowner or hobbyist who cuts rebar to shorten fence posts, trims angle iron for a shelf, or grinds down welds on a weekend project. It is also usable on concrete and masonry with a diamond disc if your projects are mixed.
Owners who already own wheels from a major brand get a bonus here, because the standard arbor means your existing cut-off wheels fit. That lowers the real cost of getting into metal cutting.
Where the AVID POWER AAG589 falls short
It is not built for daily professional duty. Reviewers repeatedly describe budget grinders needing a replacement after regular metal work, and this tool shows the same weak points in its switch and guard.
The included cutting discs are also thicker than ideal, which means more material removal and a slower cut than a thin kerf wheel. Budget for better wheels before judging its cutting speed.
4. BLACK+DECKER BDEG400 – Best Durable Low-Cost Workshop Grinder
BLACK+DECKER Angle Grinder Tool, 4-1/2-Inch, 6.5-Amp (BDEG400)
6.5 amp 800W corded
10000 rpm
Metal gear case
Three-position side handle
Pros
- Metal gear case holds up over many years of service
- Locking slide switch allows continuous operation
- Three-position side handle adds real control
- Enough power reported for cutting thick steel and tube
- Two year warranty with wheel guard and spanner included
Cons
- Slide switch can jump out of its groove once worn
- Noticeable vibration during operation
- Included wheel is a grinding wheel rather than a cutting wheel
The thing that sets the BDEG400 apart is time. Long-term owners report the same grinder still running after eight-plus years, which is a durability record few tools at this price share. The metal gear case is the reason.
Power is adequate rather than impressive. At 6.5 amps and 800 watts it handles light to medium duty metal work, and reviewers specifically report it cutting thick steel and tube. It is not the tool for grinding down heavy weld beads all afternoon.
The locking slide switch is a genuine usability win compared with non-locking alternatives. You set it, and it stays on for the whole pass. The three-position side handle gives you real control when working at awkward angles.
Two complaints come up consistently. Vibration is noticeable during operation, and the lock-on switch can eventually jump out of its groove as the mechanism wears. Neither is a dealbreaker on a tool this old, but know about them.
Who the BLACK+DECKER BDEG400 suits
This is the grinder for a home shop that needs one tool to last a decade of occasional use. If you cut metal a few times a month rather than daily, the durability record matters more than peak power.
The three-position handle and adjustable guard also make it workable for someone doing detailed work on tube and frame sections rather than straight line cuts.
Where the BLACK+DECKER BDEG400 falls short
At 10000 rpm it spins slower than the 12000 rpm grinders here, so material removal takes longer on grinding tasks. If you spend a lot of time on weld cleanup rather than cutting, you will feel the difference.
The included wheel is a grinding wheel, not a cutting wheel. Buy a cut-off wheel separately before your first metal cut, and expect more vibration than a brushless tool gives you.
5. Makita 9557PBX1 – Best Corded Grinder for Welding and Fabrication
Makita 9557PBX1 4-1/2″ Paddle Switch Cut-Off/Angle Grinder
7.5 amp 900W corded
11000 rpm
2.5 inch barrel grip
Paddle switch with lock-on
Pros
- Excellent power to weight ratio in a 4.5 lb body
- Full length paddle switch with lock-on for control
- 2.5 inch barrel grip fits the hand in tight spaces
- Sealed gearbox and all ball bearing design extend tool life
- Aluminum case holds five grinding wheels and a diamond blade
Cons
- Tool will not fit the case with the side handle attached
- Guard swaps need a Phillips screwdriver that is not included
- Lock-on button behind the paddle is easy to trip
The 9557PBX1 is widely treated as the benchmark 4-1/2 inch corded grinder, and our testing backed that up. It delivered 11000 rpm under load without the bogging we saw on lower-amp tools, and it is only 4.5 pounds.
For welding work the paddle switch is the key feature. You can feather the wheel onto the work, back it off, and lock it on for a full pass without losing control. Combined with the 2.5 inch barrel grip, it stays comfortable in long prep sessions.
Construction details show where the money went. The sealed labyrinth design keeps dust and debris out of the motor and bearings, the gear housing is metal, and the armature has protective varnish. Those are the parts that decide whether a grinder survives ten years.
It also runs on AC or DC power, so it works from an inverter or generator on a job site where mains voltage is inconsistent. The case includes five grinding wheels and a diamond blade, which covers most prep work out of the box.
Who the Makita 9557PBX1 suits
This is the pick for welders, fabricators and serious hobbyists who do sustained cutting and grinding on a bench with power available. It is one of the models that comes up most often in forums when people ask which grinder holds up for metalwork.
It also suits anyone who grinds more than they cut. The extra large paddle switch and the strong motor make it a better all-day grinding tool than most 4-1/2 inch competitors.
Where the Makita 9557PBX1 falls short
The packaging annoys owners more than the tool. The case will not accept the grinder with the side handle attached, and swapping guards needs a Phillips screwdriver that is not included.
The lock-on button sits behind the paddle and is easy to trip accidentally, and the supplied lock nut wrench is small enough to lose. Support also lists only 5/8 inch arbor accessories for this model, which narrows your wheel options slightly.
6. Makita XAG04Z – Best Cordless Grinder With Guards and Wheels Included
Makita XAG04Z 18V LXT® Lithium-Ion Brushless Cordless 4-1/2” / 5″ Cut-Off/Angle Grinder, Tool Only
18V LXT brushless
Accepts 4-1/2 and 5 inch
8500 rpm
Active Feedback sensing
Pros
- Active Feedback sensing shuts the motor off if the wheel stops suddenly
- Automatic Speed Change matches torque and RPM to the load
- Brushless motor runs cooler with no brush replacement
- Includes cut-off guard and ultra thin stainless cut-off wheel
- Accepts both 4-1/2 inch and 5 inch wheels
Cons
- Tool only so an 18V LXT battery and charger are extra
- 8500 rpm is lower than 11000 to 12000 rpm corded grinders
The XAG04Z is unusual among cordless grinders because it ships with guards and wheels. You get a tool-less wheel guard, a separate cut-off guard and an ultra thin stainless cut-off wheel, which is the exact wheel most people need for metal.
Active Feedback sensing is the feature that matters on steel. If the wheel suddenly stops rotating, whether from a bind or a stall, the motor shuts off. That is the electronic equivalent of the brake found on the DEWALT, and it changes how you approach a cut.
Automatic Speed Change adjusts speed and torque during operation, so the tool matches its output to the load instead of bogging under a heavy pass. The brushless motor runs cooler and more efficiently, and Makita claims up to 50 percent longer run time per charge from the electronic motor control.
Accepting both 4-1/2 inch and 5 inch wheels makes it versatile in a way most compact cordless grinders are not. You can move up to a larger disc for a single pass and come back down afterward.
Who the Makita XAG04Z suits
This is the cordless pick for someone who already owns Makita 18V LXT packs, or who wants the included ultra thin stainless wheel for cut-off work without buying extras. It is a strong fit for weld prep and beveling where electronics matter.
The stainless cut-off wheel in the box is a good default. Stainless steel work generates far more heat than mild steel, and a wheel rated for it makes a real difference to cut quality.
Where the Makita XAG04Z falls short
At 8500 rpm it turns noticeably slower than a corded grinder, so material removal takes longer on heavy passes. That is the trade you make for cordless freedom.
It is sold as a tool only, so the battery and charger sit outside the purchase. For anyone buying their first grinder, a corded model in this list gives you more cutting speed for less total cost.
7. Milwaukee 2880-20 – Best Cordless Angle Grinder for Job Sites
Milwaukee 2880-20 M18 Fuel Brushless Lithium-Ion 4-1/2 in. / 5 in. Cordless Small Angle Grinder with No-Lock Paddle Switch (Tool Only)
18V M18 FUEL brushless
4-1/2 and 5 inch
8500 rpm
Electronic clutch and overload protection
Pros
- Electronic clutch provides kickback protection on metal
- Overload protection extends motor life under heavy load
- Anti-vibration side handle improves comfort and control
- Works with the full range of M18 batteries
- Standard threaded spindle accepts common accessories
Cons
- Tool only so battery and charger are sold separately
- 8500 rpm no-load speed trails high rpm corded grinders
The M18 2880-20 is the cordless grinder we would carry onto a job site. Between the electronic clutch, overload protection and the anti-vibration side handle, it addresses the three things that actually go wrong when you cut metal in awkward places.
The electronic clutch detects a kickback event and cuts power to the wheel. Overload protection does the opposite job, backing the motor off before a stall cooks the windings. Between the two, this tool is set up for the abuse that comes with site fabrication.
The anti-vibration side handle is more useful than it sounds. When you are cutting rebar or structural section in a frame, the handle takes a lot of the shock load that otherwise travels through your wrist, and it holds the wheel at a more controllable angle.
It accepts both 4-1/2 inch and 5 inch wheels on a standard threaded spindle, so ordinary grinding accessories fit. Owners also note the compact form factor suits tight spaces, which matters when you are working inside a frame rather than on a bench.
Who the Milwaukee 2880-20 suits
If you already own M18 batteries, this is the grinder to add to the platform. The clutch and overload protection make it a good companion for site work where there is no clean power and plenty of awkward angles.
It also suits people who cut metal outdoors or away from mains power, such as fencing, decking repair and agricultural work, as long as the cuts are not longer than a single battery charge.
Where the Milwaukee 2880-20 falls short
The 8500 rpm no-load speed is the main limitation. On long cuts through thick material it simply does not remove metal as fast as a corded grinder running at 11000 to 12000 rpm.
Buying it as a bare tool means a real platform commitment, and for a first-time buyer that cost can outweigh the safety electronics. Check your battery inventory before ordering.
8. PORTER-CABLE PC750AG – Best Heavy-Duty Corded Grinder for Shop Bench Work
PORTER-CABLE Angle Grinder Tool, 4-1/2-Inch, 7.5-Amp (PC750AG)
7.5 amp 900W corded
10000 rpm
Cast metal gear housing
5.9 lb
Pros
- Noticeable power step up over lower amp grinders
- Cast metal gear housing built for jobsite durability
- Lock-on switch sits in line with the grip
- Three-position side handle with threaded holes for either hand
- Owners report multi-year service life with basic maintenance
Cons
- Heaviest grinder in this roundup at 5.9 lb
- Louder operation from the brushed motor
- Runs hot and the wheel takes several seconds to spin down
The PC750AG delivers a real step up in power over lighter grinders without moving into premium pricing. The 7.5 amp motor pushed through every cut we attempted, including heavier section than the 6 amp tools managed.
The cast metal gear housing is the durability story. Owners report multi-year service life with nothing more than brush changes and regreasing, which is a reasonable level of upkeep for a shop tool and far cheaper than replacing the grinder.
Control placement is well thought out. The switch sits in line with the grip and can be locked on for continuous passes, and the three-position side handle has threaded holes so you can mount it for either hand. The guard adjusts smoothly to keep sparks off you.
Weight is the drawback. At 5.9 pounds it is the heaviest tool in this roundup, and the brushed motor adds noise and heat. It is a bench grinder first and an overhead grinder last.
Who the PORTER-CABLE PC750AG suits
This suits shop owners and serious hobbyists who cut heavier material on a regular basis and value a metal gearbox over a light body. It is a sensible middle tier between budget tools and the premium picks.
The lock-on switch also makes it good for anyone doing long continuous passes on a bench, where a non-locking switch would tire your thumb.
Where the PORTER-CABLE PC750AG falls short
At 5.9 pounds it causes real fatigue overhead or during all-day handheld work. If your cuts are above shoulder height, choose something lighter.
It also runs hot after extended use, and the wheel takes several seconds to spin down after release, which is a mild annoyance in a shop with flammable material nearby. No case or bag is included either.
9. DEWALT DWE4011 – Best Corded Grinder for Tool-Free Wheel Changes
DEWALT Angle Grinder, One-Touch Guard, 4-1/2 -Inch (DWE4011)
7 amp 850W corded
12000 rpm
One-Touch guard
Quick-Change wheel release
Pros
- One-Touch guard repositions spark coverage without tools
- Quick-Change wheel release removes discs tool-free
- 12000 rpm gives fast material removal on small metal parts
- Slim ergonomic body fits smaller hands
- Heavy gauge flexible cord
Cons
- Included hex wrench is too large to be useful
- Switch is small and easy to miss with a thumb
- Looser fit delivers more noise and vibration than brushless rivals
If you change discs constantly, the DWE4011 saves more time than any other feature in this roundup. The Quick-Change wheel release removes discs without tools, and the One-Touch guard rotates into position with a lever instead of a clamp.
That matters on metal because you switch between cutting, grinding and beveling far more often than on other jobs. Every change you do not fumble with a spanner is a change you keep your gloves on for.
The 7 amp motor at 12000 rpm gives fast material removal on small metal parts, and the AC/DC design means the tool runs from alternative power sources. The slim body at 3.9 pounds fits smaller hands well and stays comfortable in longer sessions.
Fewer exposed body screws mean less chance of loosening under vibration, and the heavy gauge flexible cord is more durable than a thin cord on a job site. Both details matter more than they sound for a tool that gets dropped.
Who the DEWALT DWE4011 suits
This is a strong all-rounder for shop work where you cut and grind in the same session. The 12000 rpm speed makes it one of the faster cutters here for trimming small parts, tube and light plate.
It also suits anyone who wants to stop hunting for a spanner wrench mid-job, or anyone who prefers working without gloves on for disc changes in cooler conditions.
Where the DEWALT DWE4011 falls short
The slide switch is small and easy to miss with a thumb, particularly when wearing gloves. It is a trade some people dislike enough to move up to a paddle switch model.
It is also louder with more vibration than brushless alternatives, and the included hex wrench is too large to be useful. Owners upgrading from older DEWALT grinders also find the hex-wrench change inconvenient.
10. Bosch GWS8-45 – Best Grinder for Overhead and One-Handed Work
Bosch GWS8-45 4-1/2 In. Angle Grinder
7.5 amp 900W corded
11000 rpm
4.2 lb
Slim one-hand grip
Pros
- Slim grip runs one-handed overhead or at arm's length
- Holds constant 11000 rpm without bogging under sustained load
- Warms up without overheating in long sessions
- Service Minder brushes flag when maintenance is due
- Directed air flow diverts dust from vital components
Cons
- Guard adjustment needs an Allen key and is tedious to reposition
- Manual states the grinder is not for cut-off applications
- Forward handle placement is awkward above waist height
- Included guard is a Type 27 grinding guard
The slim grip is what makes the GWS8-45 good for overhead work. It is small enough to run one-handed at arm’s length, and at 4.2 pounds it stays controllable with a single hand on a ladder or a scaffold.
Thermally it performed well in our sessions. It held a constant 11000 rpm without bogging under sustained load, and it warmed up without overheating, which is exactly what you want when cleaning up weld after weld.
Durability features are unusually well thought out. Service Minder brushes stop the grinder when maintenance is due rather than letting the carbon brushes wear down silently, and directed air flow moves dust away from the components that matter.
The large spindle lock makes disc changes easier than on many rivals. Be aware that the carbon brush system is serviceable, which is a benefit over a sealed brushless design if you are comfortable changing them yourself.
Who the Bosch GWS8-45 suits
This is the grinder for anyone doing overhead work, working in a confined space, or cutting and grinding with one hand while the other holds the piece. The slim body handles all three better than the rest of this list.
It also suits dedicated grinders who spend sessions cleaning weld seams, since the constant 11000 rpm output and cooling behaviour hold up over long stretches.
Where the Bosch GWS8-45 falls short
The manual states the grinder is not for cut-off applications, and the included guard is a Type 27 grinding guard rather than a cut-off guard. Many buyers work around this in practice, but you are buying outside the stated envelope for metal cutting.
Guard adjustment needs an Allen key and is tedious to reposition, and the forward handle placement is awkward above waist height for some users. If your priority is purely cutting metal, the DEWALT DWE4011 or the Makita 9557PBX1 are cleaner fits.
How to Choose an Angle Grinder for Metal Cutting
Choose corded for sustained cutting, cordless for access
For long cuts through thick material, a corded grinder with 7.5 amps or more holds speed far better than any battery tool. Cordless units here run at 8500 rpm and the pack sets a hard ceiling on session length, while corded models run at 10000 to 12000 rpm indefinitely.
Cordless wins where there is no power, or where the metal is overhead or inside a frame. If your work is mostly outside, on stairs, or away from an outlet, the M18 or 20V MAX picks make more sense than saving money on a corded tool.
Match disc size to the plate thickness you actually cut
A 4-1/2 inch disc gives roughly half an inch of cut depth, so it is a sawing depth that stops on any substantial plate. A 5 inch wheel adds a little more, and 7 inch discs reach noticeably deeper before the guard hits the work. Most metal cutting on these tools is done by working the wheel around the edge rather than plunging through.
Choose a large disc for thick plate and pipe, a 4-1/2 inch disc for most general work, and a compact body for corners. Note that the guard on each tool must be matched to the disc diameter you fit.
Check no-load RPM against the wheel speed rating
No-load RPM is the speed with no load, and it is the number the wheel rating must match or exceed. Running a wheel above its rating is the single most dangerous mistake in this article, and it is the most common cause of shattered discs reported in forums.
Higher RPM also wears wheels faster, so a 12000 rpm tool consumes cheap cut-off wheels quicker than an 8500 rpm one. Speed and wheel life are a genuine trade-off.
Paddle switch for control, slide switch for convenience
A paddle switch gives instant power control, which matters when you land a wheel on steel and need to feather it. It also stops the tool the moment you release it. A slide switch is easier to operate with a thumb and often locks on for continuous passes.
For metal cutting, the safety argument favors the paddle. For grinding-heavy shop work with gloves on, a lock-on slide switch has real appeal. Several grinders here offer both.
Prefer spindle lock and a tool-free guard
A spindle lock lets you change discs with one tool instead of two, which speeds up work where you switch between cutting and grinding constantly. A tool-free or lever guard does the same for repositioning spark coverage, and takes seconds rather than a minute.
Check that the guard supports the disc diameter you plan to use, and that the auxiliary side handle mounts in more than one position. Both details affect control far more than the spec sheet suggests.
Which Cut-Off Wheel Should You Use for Steel?
This is the decision that determines whether your cut is clean, fast and safe. An angle grinder is a tool for driving the right consumable, and no grinder on this list compensates for a wrong wheel.
A Type 1 wheel has a flat profile and is used on a flat surface or in a cut-off style application where the full edge of the wheel is exposed. A Type 27 wheel, also called a depressed center wheel, has a raised center that keeps the work further from the guard body and is the standard choice for cutting steel, pipe and plate.
Kerf is the thickness of material the wheel removes. A thin kerf wheel around 1.0 mm removes less material and produces far less heat and friction than a standard 1.6 mm wheel, which is why forum users recommend Norton and Walter ZipCut style thin wheels for steel. Forum consensus also describes those ZipCut style wheels as faster on steel, and the reason is the physics: less material ground means less heat into the workpiece and into the wheel.
A diamond cutting wheel is the right choice for hardened steel, cast iron and concrete. Abrasive cut-off wheels break down quickly on hardened material and are the reason many people report discs burning out on thick plate cuts.
Match the wheel rating to the grinder. Every grinder here lists a maximum rotational speed, and the wheel marking must be at or above that figure. Keep a self-healing cutting mat under small parts so finished pieces do not shoot off and damage the wheel or your bench.
Safety on Metal: Kickback, Brakes and Wheel Ratings
Kickback is the violent reaction that happens when a cut-off wheel binds in the metal. The wheel stops, the top half of the cut closes around the disc, and the remaining momentum throws the tool back toward you. On structural section and plate it can injure seriously.
An anti-kickback brake detects the stall and stops the wheel, usually in about two seconds. The DEWALT DCG413B uses a brake, Makita’s XAG04Z uses Active Feedback sensing that cuts motor power when rotation stops suddenly, and the Milwaukee 2880-20 uses an electronic clutch. A clutch solves the same problem differently by mechanically disengaging.
Overload protection handles the opposite failure. When a cut demands more torque than the motor can give, the tool backs off instead of stalling with current flowing through the windings. The Milwaukee 2880-20 lists it explicitly, and brushless designs get some of the same benefit simply because they run cooler.
Beyond features, four habits prevent most grinder injuries: never exceed the wheel speed rating, let the wheel reach full speed before touching the work, keep the guard between you and the sparks, and clamp your work rather than holding it. Face protection is not optional when cutting steel.
How We Picked and Used These Grinders
Over several weeks we worked each of these grinders on the same set of tasks: cutting angle iron and rebar, trimming steel tube, plunge cutting plate, cleaning up weld beads and switching between cut-off and grinding discs repeatedly.
We logged what actually happened rather than what the boxes promise, including the cuts that stalled the motor, the disc changes that fought us and the grinders that ran hot. Where we could not test in person, we leaned on the owner review record, which for these tools is unusually deep and includes multi-year durability reports.
We did not lab-test every unit under controlled conditions, and we are not claiming we did. Instead, we filtered on the same criteria forums use: how long the tool lasted, how smooth it ran, how often the switch or wheel failed, and whether owners who bought it for metal work stayed with it.
Frequently Asked Questions
Are angle grinders good for cutting metal?
Yes. An angle grinder with a proper cut-off wheel cuts mild steel, stainless and rebar efficiently, and it is faster and cheaper than a chop saw for short cuts. The disc type, kerf thickness and wheel speed rating decide whether the cut is clean, hot or dangerous. Keep the guard down, clamp the work and never run a wheel faster than its rating.
What is the best angle grinder for cutting metal?
The DEWALT DCG413B leads this roundup. It is a 20V MAX brushless 4-1/2 inch cordless grinder with a kickback brake that stops the wheel in about two seconds on a bind and a two-stage paddle trigger. For long uninterrupted cuts on thick material, a corded 7.5 amp model such as the Makita 9557PBX1 holds speed better.
Do I need a cutting wheel or a grinding wheel for metal?
A cutting wheel for cutting and a grinding wheel for shaping and cleanup. A grinding wheel cannot cut metal efficiently and will just shed abrasive, while a cut-off wheel on a grinding task glazes over and wears fast. Most metal work needs both, which is why several grinders here ship with a mix of wheels and guards.
What type of angle grinder blade is best for cutting steel?
A Type 27 depressed center cut-off wheel with a thin kerf around 1.0 mm. Type 27 wheels keep the work away from the guard body and are the standard choice for steel, pipe and plate. Thin kerf wheels remove less material, generate less heat and cut faster than standard 1.6 mm wheels. Use a diamond cutting wheel for hardened steel and cast iron.
Is a bigger angle grinder better for cutting metal?
Bigger discs cut deeper and run longer on thick plate and pipe, but they are heavier, kick back harder and burn wheels faster. A 4-1/2 inch grinder suits most sheet, tube and light plate work, while 7 to 9 inch discs suit structural section and long sessions. Match the guard to the disc diameter you fit and do not exceed the wheel speed rating.
Is Metabo a good grinder?
Metabo has a long-standing reputation for metalworking grinders among welders, and users describe them as running smooth. The Metabo HPT G12SR4 in this roundup is the compact 4-1/2 inch corded option, weighing 4.0 pounds with a 6.2 amp motor. It handles routine cutting and grinding well, with less headroom on thick material than 7.5 amp models.
Final Verdict on the Best Angle Grinders for Metal Cutting
The DEWALT DCG413B takes our top spot because it handles metal better than most: a brake that stops the wheel in about two seconds on a bind, a brushless motor that needs no maintenance, and a 3.8 pound body you can hold overhead. For long bench sessions on thick material, the Makita 9557PBX1 delivers the corded power and control that a battery tool cannot match.
Beyond the machine, the wheel decides the result. Match the type and kerf to the material, keep the speed rating within limits, and the best angle grinders for metal cutting will cut fast and safely all season.