Metric Steel Bars | McMaster-Carr

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	System of Measurement System of Measurement	Show

Metric

	System of Measurement System of Measurement	Hide

Inch

Metric

	Shape Type Shape Type	Show

Bars

	Shape Type Shape Type	Hide

	Thickness Thickness

	Width Width

	Shape Shape

	Sheet and Bar

	Material Material

Stainless Steel

Steel

	Appearance Appearance

	Plain

	Low-Carbon Steel Grade Low-Carbon Steel Grade

1008-1010

1018

A36

	Tolerance Rating Tolerance Rating

	Fabrication Fabrication

Cold Worked

Hot Rolled

	Hardness Rating Hardness Rating

Medium

	Hardness Hardness

	Yield Strength Yield Strength

30,000 to 39,999 psi

40,000 to 99,999 psi

	Certificate Certificate

	Material Certificate with Traceable Lot Number

	Maximum Hardness After Heat Treatment Maximum Hardness After Heat Treatment

	Elongation Elongation

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

	Heat Treatable Heat Treatable

Yes

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

DFARS Specialty Metals
Compliant

	Maximum Temperature Maximum Temperature

1,500° to 1,999° F

Not Rated

	Minimum Temperature Minimum Temperature

Not Rated

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	Mechanical Finish Mechanical Finish

Precision Ground

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112 Products

About Tool Steel

About Stainless Steel

About Carbon Steel, Alloy Steel, Spring Steel, and Cast Iron

Also known as mild steel, low-carbon steel is easy to machine, form, and weld. It's widely fabricated into parts that don’t require high strength, such as fixture clamps, mounting plates, and spacers. Some of this material can be surface hardened with heat treating.

For technical drawings and 3-D models, click on a part number.

Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.

Metric Bars

Yield Strength: 34,000 psi
Hardness: Rockwell B90 (Medium)
Heat Treatable: Yes
Max. Hardness After Heat Treatment: Not Rated

2 mm Thickness (-0.06 to 0 mm Tolerance)
Wd., mm		1 ft. Lg.	3 ft. Lg.	6 ft. Lg.
6	0000000	00000	00000	00000
12	0000000	0000	0000	00000
20	0000000	0000	0000	00000
25	0000000	0000	00000	00000
3 mm Thickness (-0.06 to 0 mm Tolerance)
6	0000000	0000	0000	00000
12	0000000	0000	0000	00000
20	0000000	0000	00000	00000
25	0000000	0000	00000	00000
4 mm Thickness (-0.075 to 0 mm Tolerance)
6	0000000	0000	0000	00000
12	0000000	0000	00000	00000
20	0000000	0000	00000	00000
25	0000000	0000	00000	00000
5 mm Thickness (-0.075 to 0 mm Tolerance)
6	0000000	0000	00000	00000
12	0000000	0000	00000	00000
20	0000000	0000	00000	00000
25	0000000	0000	00000	00000
6 mm Thickness (-0.075 to 0 mm Tolerance)
6	0000000	0000	0000	00000
12	0000000	0000	00000	00000
20	0000000	0000	00000	00000
25	0000000	0000	00000	00000
8 mm Thickness (-0.09 to 0 mm Tolerance)
12	0000000	0000	00000	00000
20	0000000	00000	00000	00000
25	0000000	00000	00000	00000
50	0000000	00000	00000	00000
10 mm Thickness (-0.09 to 0 mm Tolerance)
12	0000000	0000	00000	00000
20	0000000	00000	00000	00000
25	0000000	00000	00000	00000
50	0000000	00000	00000	000000
15 mm Thickness (-0.11 to 0 mm Tolerance)
20	0000000	00000	00000	00000
25	0000000	00000	00000	00000
50	0000000	00000	000000	000000
20 mm Thickness (-0.13 to 0 mm Tolerance)
20	0000000	00000	00000	000000
25	0000000	00000	00000	000000
50	0000000	00000	000000	000000
25 mm Thickness (-0.13 to 0 mm Tolerance)
25	0000000	00000	00000	000000
50	0000000	00000	000000	000000

Tight-Tolerance Low-Carbon Steel Bars

With a thickness that's precision ground to a tight tolerance, these bars are sometimes called flat stock. Low-carbon steel, also known as mild steel, is easy to machine, form, and weld. It's widely fabricated into parts that don’t require high strength, such as fixture clamps, mounting plates, and spacers. This material can be surface hardened with heat treating. All steel meets ASTM A36 standards for materials.

For technical drawings and 3-D models, click on a part number.

Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.

Metric Bars

Yield Strength: 36,000 psi
Hardness: Not Rated
Heat Treatable: Yes
Max. Hardness After Heat Treatment: Rockwell C65

3 mm Thick. (-0.025 to 0.025 mm Tolerance)
Wd., mm	Mechanical Finish	Specifications Met		1 ft. Lg.	2 ft. Lg.
10	Precision Ground	ASTM A36	00000000	000000	000000
15	Precision Ground	ASTM A36	00000000	00000	00000
20	Precision Ground	ASTM A36	00000000	00000	00000
25	Precision Ground	ASTM A36	00000000	00000	00000
4 mm Thick. (-0.025 to 0.025 mm Tolerance)
10	Precision Ground	ASTM A36	00000000	00000	00000
15	Precision Ground	ASTM A36	00000000	00000	00000
20	Precision Ground	ASTM A36	00000000	00000	00000
25	Precision Ground	ASTM A36	00000000	00000	00000
5 mm Thick. (-0.025 to 0.025 mm Tolerance)
10	Precision Ground	ASTM A36	00000000	00000	00000
15	Precision Ground	ASTM A36	00000000	00000	00000
20	Precision Ground	ASTM A36	00000000	00000	00000
25	Precision Ground	ASTM A36	00000000	00000	000000
10 mm Thick. (-0.025 to 0.025 mm Tolerance)
10	Precision Ground	ASTM A36	00000000	00000	00000
15	Precision Ground	ASTM A36	00000000	00000	000000
20	Precision Ground	ASTM A36	00000000	00000	000000
25	Precision Ground	ASTM A36	00000000	00000	000000

Low-Carbon Steel Bars with Rounded Edges

Yield Strength: 35,000 psi
Hardness: Rockwell B65 (Medium)
Heat Treatable: Yes
Max. Hardness After Heat Treatment: Rockwell C60

Also known as mild steel, low-carbon steel is easy to machine, form, and weld. It's widely fabricated into parts that don’t require high strength, such as fixture clamps, mounting plates, and spacers. This material can be surface hardened with heat treating.

For technical drawings and 3-D models, click on a part number.

Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.

Metric Bars

1mm Thick. (-0.09mm to 0.09mm Tolerance)
Wd., mm		1 5/8 ft. Lg.	3 1/4 ft. Lg.	6 1/2 ft. Lg.
25	0000000	000000	000000	000000
50	0000000	00000	00000	00000
3mm Thick. (-0.09mm to 0.09mm Tolerance)
25	0000000	00000	00000	00000
50	0000000	00000	00000	00000
5mm Thick. (-0.09mm to 0.09mm Tolerance)
25	0000000	00000	00000	00000
40	0000000	00000	00000	00000

High-Strength 1045 Carbon Steel Sheets and Bars

Stronger than low-carbon steel with equally good machinability, 1045 carbon steel is widely used for bolts, studs, and shafts.

For technical drawings and 3-D models, click on a part number.

Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.

Bars

Yield Strength: Inch: 77,000 psi
Metric: 45,000 psi
Hardness: Rockwell B90 (Medium)
Heat Treatable: Yes
Max. Hardness After Heat Treatment: Inch: Rockwell C60
Metric: Rockwell C45
Specifications Met: See table

Thick.	Thick. Tolerance	Wd.		1 ft. Lg.	3 ft. Lg.	6 ft. Lg.
5mm	-0.075mm to 0mm	20mm	00000000	000000	000000	000000
5mm	-0.075mm to 0mm	25mm	00000000	00000	00000	00000
10mm	-0.09mm to 0mm	15mm	00000000	00000	00000	00000
10mm	-0.09mm to 0mm	20mm	00000000	00000	00000	00000
10mm	-0.09mm to 0mm	25mm	00000000	00000	00000	000000
10mm	-0.09mm to 0mm	30mm	00000000	00000	00000	00000
10mm	-0.09mm to 0mm	50mm	00000000	00000	000000	000000
10mm	-0.09mm to 0mm	60mm	00000000	00000	000000	000000
15mm	-0.11mm to 0mm	20mm	00000000	00000	00000	000000
15mm	-0.11mm to 0mm	25mm	00000000	00000	00000	000000
15mm	-0.11mm to 0mm	30mm	00000000	00000	00000	000000
15mm	-0.11mm to 0mm	50mm	00000000	00000	00	00
15mm	-0.11mm to 0mm	60mm	00000000	00000	000000	000000
20mm	-0.13mm to 0mm	20mm	00000000	00000	000000	000000
20mm	-0.13mm to 0mm	30mm	00000000	00000	000000	000000
20mm	-0.13mm to 0mm	50mm	00000000	00000	000000	000000
25mm	-0.13mm to 0mm	25mm	00000000	00000	00	00
25mm	-0.13mm to 0mm	50mm	00000000	000000	000000	00
25mm	-0.13mm to 0mm	60mm	00000000	00000	000000	00
40mm	-0.16mm to 0mm	60mm	00000000	000000	000000	000000

Tight-Tolerance Multipurpose Oil-Hardening O1 Tool Steel Sheets and Bars

Also known as flat stock, these precision-ground sheets and bars are held to a tight thickness tolerance. Often used for dies, punches, and gauges, O1 tool steel is an oil-hardening material that resists wear and abrasion.

For technical drawings and 3-D models, click on a part number.

Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.

Metric Bars

Yield Strength: 80,000 psi
Hardness: Rockwell B90 (Medium)
Heat Treatable: Yes
Max. Hardness After Heat Treatment: Rockwell C65
Specifications Met: ASTM A681

				3 ft. Lg.
Wd., mm	Heat Treatment	Mechanical Finish	Flatness Tolerance		Each
3 mm Thick. (0 mm to 0.05 mm Tolerance)
15	Annealed (Softened)	Precision Ground	0.005" per ft.	0000000	000000
25	Annealed (Softened)	Precision Ground	0.005" per ft.	0000000	00000
100	Annealed (Softened)	Precision Ground	0.005" per ft.	0000000	000000
4 mm Thick. (0 mm to 0.05 mm Tolerance)
15	Annealed (Softened)	Precision Ground	0.005" per ft.	0000000	00000
30	Annealed (Softened)	Precision Ground	0.005" per ft.	0000000	00000
5 mm Thick. (0 mm to 0.05 mm Tolerance)
15	Annealed (Softened)	Precision Ground	0.005" per ft.	0000000	00000
20	Annealed (Softened)	Precision Ground	0.005" per ft.	0000000	00000
25	Annealed (Softened)	Precision Ground	0.005" per ft.	0000000	00000
30	Annealed (Softened)	Precision Ground	0.005" per ft.	0000000	00000
6 mm Thick. (0 mm to 0.05 mm Tolerance)
20	Annealed (Softened)	Precision Ground	0.005" per ft.	0000000	00000
25	Annealed (Softened)	Precision Ground	0.005" per ft.	0000000	000000
150	Annealed (Softened)	Precision Ground	0.005" per ft.	0000000	000000
10 mm Thick. (0 mm to 0.05 mm Tolerance)
15	Annealed (Softened)	Precision Ground	0.005" per ft.	0000000	000000
20	Annealed (Softened)	Precision Ground	0.005" per ft.	0000000	000000
25	Annealed (Softened)	Precision Ground	0.005" per ft.	0000000	000000
40	Annealed (Softened)	Precision Ground	0.005" per ft.	0000000	000000

Multipurpose 304 Stainless Steel

From cookware to chemical-processing equipment, 304 stainless steel is a good all-around choice for a wide range of applications. It maintains its corrosion resistance in temperatures up to 1500° F.

For technical drawings and 3-D models, click on a part number.

Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.

304 Stainless Steel Bars

Yield Strength: 30,000 psi
Hardness: See Table
Heat Treatment: Annealed (Softened)
Heat Treatable: No
Specifications Met: See Table

3 mm Thick. (-0.06 mm to 0 mm Tolerance)
Wd.	Wd. Tolerance	Fabrication	Hardness	Straightness Tolerance		1 ft. Lg.	3 ft. Lg.	6 ft. Lg.
12mm	-0.11mm to 0mm	Cold Worked	Rockwell B80 (Medium)	Not Rated	0000000	000000	000000	000000
20mm	-0.13mm to 0mm	Cold Worked	Rockwell B80 (Medium)	Not Rated	0000000	00000	00000	000000
25mm	-0.13mm to 0mm	Cold Worked	Rockwell B80 (Medium)	Not Rated	0000000	00000	00000	000000
5 mm Thick. (-0.075 mm to 0 mm Tolerance)
12mm	-0.11mm to 0mm	Cold Worked	Rockwell B80 (Medium)	Not Rated	0000000	00000	00000	000000
20mm	-0.13mm to 0mm	Cold Worked	Rockwell B80 (Medium)	Not Rated	0000000	00000	00000	000000
25mm	-0.13mm to 0mm	Cold Worked	Rockwell B80 (Medium)	Not Rated	0000000	00000	00000	000000
8 mm Thick. (-0.09 mm to 0 mm Tolerance)
20mm	-0.13mm to 0mm	Cold Worked	Rockwell B80 (Medium)	Not Rated	0000000	00000	000000	000000
25mm	-0.13mm to 0mm	Cold Worked	Rockwell B80 (Medium)	Not Rated	0000000	00000	000000	000000
50mm	-0.16mm to 0mm	Cold Worked	Rockwell B80 (Medium)	Not Rated	0000000	00000	000000	000000
10 mm Thick. (-0.09 mm to 0 mm Tolerance)
20mm	-0.13mm to 0mm	Cold Worked	Rockwell B80 (Medium)	Not Rated	0000000	00000	000000	000000
25mm	-0.13mm to 0mm	Cold Worked	Rockwell B80 (Medium)	Not Rated	0000000	00000	000000	000000
50mm	-0.16mm to 0mm	Cold Worked	Rockwell B80 (Medium)	Not Rated	0000000	000000	000000	000000
15 mm Thick. (-0.11 mm to 0 mm Tolerance)
20mm	-0.13mm to 0mm	Cold Worked	Rockwell B80 (Medium)	Not Rated	0000000	00000	000000	000000
25mm	-0.13mm to 0mm	Cold Worked	Rockwell B80 (Medium)	Not Rated	0000000	000000	000000	000000
50mm	-0.16mm to 0mm	Cold Worked	Rockwell B80 (Medium)	Not Rated	0000000	000000	000000	000000
20 mm Thick. (-0.13 mm to 0 mm Tolerance)
20mm	-0.13mm to 0mm	Cold Worked	Rockwell B80 (Medium)	Not Rated	0000000	000000	000000	000000
25mm	-0.13mm to 0mm	Cold Worked	Rockwell B80 (Medium)	Not Rated	0000000	000000	000000	000000
50mm	-0.16mm to 0mm	Cold Worked	Rockwell B80 (Medium)	Not Rated	0000000	000000	000000	000000

Email Us

About Tool Steel

About Stainless Steel

About Carbon Steel, Alloy Steel, Spring Steel, and Cast Iron

Low-Carbon Steel Sheets and Bars

Tight-Tolerance Low-Carbon Steel Bars

Low-Carbon Steel Bars with Rounded Edges

High-Strength 1045 Carbon Steel Sheets and Bars

Tight-Tolerance Multipurpose Oil-Hardening O1 Tool Steel Sheets and Bars

Multipurpose 304 Stainless Steel