ASTM A829 Steel | McMaster-Carr

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217 Products

About Steel

Compare over 50 grades of steel and cast iron to find the right material for you—all with material certificates for traceability.

Oversized Hardened Multipurpose 4140 Alloy Steel Bars

Yield Strength: 95,000 psi
Hardness: Rockwell C25 (Hard)
Fabrication: Hot Rolled
Specifications Met: ASTM A578, ASTM A829

Because the thickness is oversized, you can finish these bars to your exact requirements. They are hardened for increased abrasion and impact resistance. Also known as chrome-moly steel, this versatile alloy steel is used for a variety of parts, such as molds and structural supports. It resists fracturing from repeated stress. These ground bars are decarb-free, which means residue created during manufacturing has been removed. As a result, these bars have a uniform surface that's ready for machining, heat treating, and finishing. These bars have been manufactured to meet ASTM standards for quality and performance.

Note: Bars may be made from either 4140 or 4142 alloy steel. They are interchangeable in most applications.

If you don't see the size you're looking for, please specify a length under additional bar lengths.

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

1/8" Thick.
Wd.	Thick. Tolerance	Mechanical Finish	Flatness Tolerance		1/2 ft. Lg.	1 ft. Lg.	2 ft. Lg.	3 ft. Lg.	4 ft. Lg.	6 ft. Lg.	8 ft. Lg.
1/2"	0.020" to 0.045"	Ground	1/16" per 5 ft.	00000000	00	00	00	000000	00	000000	00
1"	0.020" to 0.045"	Ground	1/16" per 5 ft.	00000000	00	000000	00	00000	00	00000	00
2"	0.020" to 0.045"	Ground	1/16" per 5 ft.	00000000	00	00000	00	00000	00	000000	00
3"	0.020" to 0.045"	Ground	1/16" per 5 ft.	00000000	00	00000	00	00000	00	000000	00
1/4" Thick.
1"	0.020" to 0.045"	Ground	1/16" per 5 ft.	00000000	00	00000	00	00000	00	00000	00
2"	0.020" to 0.045"	Ground	1/16" per 5 ft.	00000000	00	00000	00	00000	00	000000	00
3/8" Thick.
1"	0.020" to 0.045"	Ground	1/16" per 5 ft.	00000000	00	00000	00	00000	00	00000	00
1/2" Thick.
1/2"	0.020" to 0.045"	Ground	1/16" per 5 ft.	00000000	00	00000	00	00000	00	00000	00
3/4"	0.020" to 0.045"	Ground	1/16" per 5 ft.	00000000	00	00000	00	00000	00	00000	00
1"	0.020" to 0.045"	Ground	1/16" per 5 ft.	0000000	000000	00000	000000	00000	00	000000	00
1 1/2"	0.020" to 0.045"	Ground	1/16" per 5 ft.	0000000	00000	00000	00000	00000	00	000000	00
2"	0.020" to 0.045"	Ground	1/16" per 5 ft.	0000000	00000	00000	00000	00000	00	000000	00
2 1/2"	0.020" to 0.045"	Ground	1/16" per 5 ft.	0000000	00000	00000	00000	000000	00	000000	00
3"	0.020" to 0.045"	Ground	1/16" per 5 ft.	0000000	00000	00000	00000	000000	00	000000	00
4"	0.020" to 0.045"	Ground	1/16" per 5 ft.	00000000	00	00000	00	000000	00	000000	00
5/8" Thick.
5/8"	0.020" to 0.045"	Ground	1/16" per 5 ft.	00000000	00	00000	00	00000	00	00000	00
1"	0.020" to 0.045"	Ground	1/16" per 5 ft.	00000000	00	00000	00	00000	00	000000	00
3/4" Thick.
3/4"	0.020" to 0.045"	Ground	1/16" per 5 ft.	00000000	00	00000	00	00000	00	000000	00
1"	0.020" to 0.045"	Ground	1/16" per 5 ft.	0000000	00000	00000	00000	00000	00	000000	0000000
1 1/4"	0.020" to 0.045"	Ground	1/16" per 5 ft.	00000000	00	00000	00	00000	00	000000	00
1 1/2"	0.020" to 0.045"	Ground	1/16" per 5 ft.	0000000	00000	00000	00000	00000	00	000000	00
2"	0.020" to 0.045"	Ground	1/16" per 5 ft.	0000000	00000	00000	00000	000000	00	000000	00
2 1/2"	0.020" to 0.045"	Ground	1/16" per 5 ft.	0000000	00000	00000	000000	000000	00	000000	00
3"	0.020" to 0.045"	Ground	1/16" per 5 ft.	0000000	00000	00000	000000	000000	00	000000	00
4"	0.020" to 0.045"	Ground	1/16" per 5 ft.	00000000	00	00000	00	000000	00	000000	00
1" Thick.
1"	0.020" to 0.045"	Ground	1/16" per 5 ft.	0000000	00000	00000	00000	00000	000000	000000	000000
1 1/4"	0.020" to 0.045"	Ground	1/16" per 5 ft.	00000000	00	00000	00	00000	00	000000	00
1 1/2"	0.020" to 0.045"	Ground	1/16" per 5 ft.	0000000	00000	00000	00000	000000	000000	000000	000000
1 3/4"	0.020" to 0.045"	Ground	1/16" per 5 ft.	00000000	00	00000	00	000000	00	000000	00
2"	0.020" to 0.045"	Ground	1/16" per 5 ft.	0000000	00000	00000	000000	000000	00	000000	00
2 1/2"	0.020" to 0.045"	Ground	1/16" per 5 ft.	0000000	00000	00000	000000	000000	00	000000	00
3"	0.020" to 0.045"	Ground	1/16" per 5 ft.	0000000	00000	00000	000000	000000	00	000000	00
3 1/2"	0.020" to 0.045"	Ground	1/16" per 5 ft.	00000000	00	00000	00	000000	00	000000	00
4"	0.020" to 0.045"	Ground	1/16" per 5 ft.	00000000	00	000000	00	000000	00	000000	00
5"	0.020" to 0.045"	Ground	1/16" per 5 ft.	00000000	00	000000	00	00	00	00	00
1 1/4" Thick.
1 1/4"	0.020" to 0.045"	Ground	1/16" per 5 ft.	00000000	00	00000	00	000000	00	000000	00
2"	0.020" to 0.045"	Ground	1/16" per 5 ft.	00000000	00	00000	00	000000	00	000000	00
1 1/2" Thick.
1 1/2"	0.020" to 0.045"	Ground	1/16" per 5 ft.	0000000	00000	00000	00000	000000	00	000000	00
1 3/4"	0.020" to 0.045"	Ground	1/16" per 5 ft.	00000000	00	00000	00	000000	00	000000	00
2"	0.020" to 0.045"	Ground	1/16" per 5 ft.	0000000	00000	00000	000000	000000	00	000000	00
2 1/2"	0.020" to 0.045"	Ground	1/16" per 5 ft.	0000000	00000	00000	000000	000000	00	000000	00
3"	0.020" to 0.045"	Ground	1/16" per 5 ft.	0000000	00000	00000	000000	000000	00	000000	00
3 1/2"	0.020" to 0.045"	Ground	1/16" per 5 ft.	00000000	00	000000	00	00	00	00	00
4"	0.020" to 0.045"	Ground	1/16" per 5 ft.	00000000	00	000000	00	00	00	00	00
2" Thick.
2"	0.020" to 0.045"	Ground	1/16" per 5 ft.	0000000	00000	00000	000000	000000	00	000000	00
2 1/2"	0.020" to 0.045"	Ground	1/16" per 5 ft.	0000000	00000	000000	000000	000000	00	000000	00
3"	0.020" to 0.045"	Ground	1/16" per 5 ft.	0000000	00000	000000	000000	000000	00	000000	00
3 1/2"	0.020" to 0.045"	Ground	1/16" per 5 ft.	00000000	00	000000	00	00	00	00	00
4"	0.020" to 0.045"	Ground	1/16" per 5 ft.	00000000	00	000000	00	00	00	00	00
2 1/2" Thick.
2 1/2"	0.020" to 0.045"	Ground	1/16" per 5 ft.	00000000	00	000000	00	00	00	00	00
3" Thick.
3"	0.020" to 0.045"	Ground	1/16" per 5 ft.	00000000	00	000000	00	00	00	00	00
4" Thick.
4"	0.020" to 0.045"	Ground	1/16" per 5 ft.	00000000	00	000000	00	00	00	00	00

Additional Bar Lengths

To Order: Please specify length in increments of 0.25" within the range listed.

1/2" Thick.
Wd.	Thick. Tolerance	Mechanical Finish	Flatness Tolerance	Choose a Length		Per Inch
1"	0.020" to 0.04"	Ground	1/16" per 5 ft.	13"-90"	0000000	00000
1 1/2"	0.020" to 0.04"	Ground	1/16" per 5 ft.	13"-90"	0000000	0000
2"	0.020" to 0.04"	Ground	1/16" per 5 ft.	13"-90"	0000000	0000
2 1/2"	0.020" to 0.04"	Ground	1/16" per 5 ft.	13"-90"	0000000	0000
3"	0.020" to 0.04"	Ground	1/16" per 5 ft.	13"-90"	0000000	0000
4"	0.020" to 0.04"	Ground	1/16" per 5 ft.	13"-90"	0000000	0000
3/4" Thick.
1"	0.020" to 0.04"	Ground	1/16" per 5 ft.	13"-90"	0000000	0000
1 1/2"	0.020" to 0.04"	Ground	1/16" per 5 ft.	13"-90"	0000000	0000
2"	0.020" to 0.04"	Ground	1/16" per 5 ft.	13"-90"	0000000	0000
2 1/2"	0.020" to 0.04"	Ground	1/16" per 5 ft.	13"-90"	0000000	0000
3"	0.020" to 0.04"	Ground	1/16" per 5 ft.	13"-90"	0000000	0000
4"	0.020" to 0.04"	Ground	1/16" per 5 ft.	13"-90"	0000000	0000
1" Thick.
1"	0.020" to 0.04"	Ground	1/16" per 5 ft.	13"-90"	0000000	0000
1 1/2"	0.020" to 0.04"	Ground	1/16" per 5 ft.	13"-90"	0000000	0000
2"	0.020" to 0.04"	Ground	1/16" per 5 ft.	13"-90"	0000000	0000
2 1/2"	0.020" to 0.04"	Ground	1/16" per 5 ft.	13"-90"	0000000	0000
3"	0.020" to 0.04"	Ground	1/16" per 5 ft.	13"-90"	0000000	00000
4"	0.020" to 0.04"	Ground	1/16" per 5 ft.	13"-90"	0000000	00000
1 1/4" Thick.
1 1/4"	0.020" to 0.04"	Ground	1/16" per 5 ft.	13"-90"	0000000	0000
1 1/2"	0.020" to 0.04"	Ground	1/16" per 5 ft.	13"-90"	0000000	0000
2"	0.020" to 0.04"	Ground	1/16" per 5 ft.	13"-90"	0000000	0000
2 1/2"	0.020" to 0.04"	Ground	1/16" per 5 ft.	13"-90"	0000000	0000
3"	0.020" to 0.04"	Ground	1/16" per 5 ft.	13"-90"	0000000	00000
4"	0.020" to 0.04"	Ground	1/16" per 5 ft.	13"-90"	0000000	00000
1 1/2" Thick.
1 1/2"	0.020" to 0.04"	Ground	1/16" per 5 ft.	13"-90"	0000000	0000
2"	0.020" to 0.04"	Ground	1/16" per 5 ft.	13"-90"	0000000	00000
2 1/2"	0.020" to 0.04"	Ground	1/16" per 5 ft.	13"-90"	0000000	00000
3"	0.020" to 0.04"	Ground	1/16" per 5 ft.	13"-90"	0000000	00000
4"	0.020" to 0.04"	Ground	1/16" per 5 ft.	13"-90"	0000000	00000

Multipurpose 4140 Alloy Steel Sheets and Bars

Also known as chrome-moly steel, this versatile alloy steel is used for a wide range of parts, such as molds and structural supports. It resists fracturing from repeated stress. You can also surface harden it with heat to add wear resistance. These sheets and bars are manufactured to ASTM standards for quality and performance.

Note: Sheets and bars may be made from either 4140 or 4142 alloy steel. They are interchangeable in most applications.

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.

Sheets

Yield Strength: 90,000 psi
Hardness: Rockwell C30 (Hard)
Heat Treatable: Yes
Max. Hardness After Heat Treatment: Not Rated
Fabrication: Hot Rolled
Specifications Met: ASTM A829

		6" × 6"		12" × 12"		24" × 24"
Thick.	Thick. Tolerance		Each		Each		Each
1/4"	-0.01" to 0.003"	000000	00	00000000	000000	00000000	0000000
1/2"	-0.01" to 0.003"	000000	00	00000000	00000	00000000	000000
3/4"	-0.01" to 0.003"	000000	00	00000000	00000	00000000	000000
1"	-0.01" to 0.006"	00000000	000000	00000000	000000	00000000	000000
1 1/2"	-0.01" to 0.006"	00000000	00000	00000000	000000	00000000	000000

Oversized Multipurpose 4140 Alloy Steel Sheets and Bars

Yield Strength: 60,000 psi
Hardness: Rockwell C15 (Medium)
Heat Treatable: Yes
Max. Hardness After Heat Treatment: Rockwell C32
Fabrication: Hot Rolled
Specifications Met: ASTM A829

The thickness is oversized for finishing to your exact requirements. This versatile alloy steel is used for many parts, such as molds and structural supports. Also called chrome-moly steel, it resists fracturing from repeated stress. These ground sheets and bars have undergone a process called decarburization, which removes residue created during manufacturing. As a result, they have a uniform surface that’s good for machining, heat treating for hardening and wear resistance, and finishing. These sheets and bars adhere to strict ASTM A829 standards for manufacturing and performance.

Note: Sheets and bars may be made from either 4140 or 4142 alloy steel. They are interchangeable in most applications.

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.

Sheets

6" × 6"
Thick.	Thick. Tolerance	Heat Treatment	Mechanical Finish	Flatness Tolerance		Each
0.188"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	00000000	000000
0.25"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	0000000	00000
0.313"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	00000000	00000
0.375"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	0000000	00000
0.5"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	0000000	00000
0.625"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	0000000	00000
0.75"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	0000000	00000
1"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	0000000	00000
1.25"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	0000000	00000
1.5"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	0000000	00000
2"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	00000000	000000
3"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	00000000	000000
6" × 12"
0.25"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	0000000	00000
0.375"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	0000000	00000
0.5"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	0000000	00000
0.625"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	0000000	00000
0.75"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	0000000	00000
1"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	0000000	000000
1.25"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	0000000	000000
1.5"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	0000000	000000
6" × 24"
0.188"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	00000000	000000
0.25"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	0000000	000000
0.313"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	00000000	000000
0.375"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	0000000	000000
0.5"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	0000000	000000
0.625"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	0000000	000000
0.75"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	0000000	000000
1"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	0000000	000000
1.25"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	0000000	000000
1.5"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	0000000	000000
2"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	00000000	000000
3"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	00000000	000000
8" × 8"
0.25"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	0000000	00000
0.375"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	0000000	00000
0.5"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	0000000	00000
0.625"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	0000000	00000
0.75"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	0000000	00000
1"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	0000000	000000
1.25"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	0000000	000000
1.5"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	0000000	000000
10" × 12"
0.25"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	0000000	00000
0.375"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	0000000	000000
0.5"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	0000000	000000
0.625"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	0000000	000000
0.75"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	0000000	000000
1"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	0000000	000000
1.25"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	0000000	000000
1.5"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	0000000	000000
12" × 12"
0.188"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	00000000	000000
0.25"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	0000000	000000
0.313"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	00000000	000000
0.375"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	0000000	000000
0.5"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	0000000	000000
0.625"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	0000000	000000
0.75"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	0000000	000000
1"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	0000000	000000
1.25"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	0000000	000000
1.5"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	0000000	000000
2"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	00000000	000000
3"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	00000000	000000
24" × 48"
0.25"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	00000000	000000
0.5"	0.02" to 0.045"	Annealed (Softened)	Ground	1/16" per 5 ft.	00000000	000000

Bars

To Order: Please specify length in increments of 0.25" within the range listed.

1/2" Thick. (0.02" to 0.04" Tolerance)
Wd.	Heat Treatment	Mechanical Finish	Flatness Tolerance	Choose a Length		Per Inch
1"	Annealed (Softened)	Ground	1/16" per 5 ft.	13"-90"	00000000	00000
1 1/2"	Annealed (Softened)	Ground	1/16" per 5 ft.	13"-90"	00000000	0000
2"	Annealed (Softened)	Ground	1/16" per 5 ft.	13"-90"	00000000	0000
2 1/2"	Annealed (Softened)	Ground	1/16" per 5 ft.	13"-90"	00000000	0000
3"	Annealed (Softened)	Ground	1/16" per 5 ft.	13"-90"	00000000	0000
4"	Annealed (Softened)	Ground	1/16" per 5 ft.	13"-90"	00000000	0000
3/4" Thick. (0.02" to 0.04" Tolerance)
1"	Annealed (Softened)	Ground	1/16" per 5 ft.	13"-90"	00000000	0000
1 1/2"	Annealed (Softened)	Ground	1/16" per 5 ft.	13"-90"	00000000	0000
2"	Annealed (Softened)	Ground	1/16" per 5 ft.	13"-90"	00000000	0000
2 1/2"	Annealed (Softened)	Ground	1/16" per 5 ft.	13"-90"	00000000	0000
3"	Annealed (Softened)	Ground	1/16" per 5 ft.	13"-90"	00000000	0000
4"	Annealed (Softened)	Ground	1/16" per 5 ft.	13"-90"	00000000	0000
1" Thick. (0.02" to 0.04" Tolerance)
1"	Annealed (Softened)	Ground	1/16" per 5 ft.	13"-90"	00000000	0000
1 1/2"	Annealed (Softened)	Ground	1/16" per 5 ft.	13"-90"	00000000	0000
2"	Annealed (Softened)	Ground	1/16" per 5 ft.	13"-90"	00000000	0000
2 1/2"	Annealed (Softened)	Ground	1/16" per 5 ft.	13"-90"	00000000	0000
3"	Annealed (Softened)	Ground	1/16" per 5 ft.	13"-90"	00000000	00000
4"	Annealed (Softened)	Ground	1/16" per 5 ft.	13"-90"	00000000	00000
1 1/4" Thick. (0.02" to 0.04" Tolerance)
1 1/4"	Annealed (Softened)	Ground	1/16" per 5 ft.	13"-90"	00000000	0000
1 1/2"	Annealed (Softened)	Ground	1/16" per 5 ft.	13"-90"	00000000	0000
2"	Annealed (Softened)	Ground	1/16" per 5 ft.	13"-90"	00000000	0000
2 1/2"	Annealed (Softened)	Ground	1/16" per 5 ft.	13"-90"	00000000	0000
3"	Annealed (Softened)	Ground	1/16" per 5 ft.	13"-90"	00000000	00000
4"	Annealed (Softened)	Ground	1/16" per 5 ft.	13"-90"	00000000	00000
1 1/2" Thick. (0.02" to 0.04" Tolerance)
1 1/2"	Annealed (Softened)	Ground	1/16" per 5 ft.	13"-90"	00000000	0000
2"	Annealed (Softened)	Ground	1/16" per 5 ft.	13"-90"	00000000	00000
2 1/2"	Annealed (Softened)	Ground	1/16" per 5 ft.	13"-90"	00000000	00000
3"	Annealed (Softened)	Ground	1/16" per 5 ft.	13"-90"	00000000	00000
4"	Annealed (Softened)	Ground	1/16" per 5 ft.	13"-90"	00000000	00000

Fatigue-Resistant 4340 Alloy Steel Sheets

Yield Strength: Not Rated
Hardness: Not Rated
Heat Treatable: Yes
Max. Hardness After Heat Treatment: Rockwell C52
Fabrication: Hot Rolled
Specifications Met: ASTM A829

Made of 4340 alloy steel, these sheets hold up to high heat, hard impacts, and heavy wear thanks to high levels of nickel, chromium, and molybdenum. They’re often used to make machine tool bases and structural panels. For even more wear resistance, you can harden the surface with heat treating. These sheets are manufactured to ASTM A829 standards for quality and performance.

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.

6" × 6"
Thick.	Thick. Tolerance	Heat Treatment	Flatness Tolerance		Each
3/4"	-0.01" to 0.03"	Stress Relieved	3/8"	0000000	0000000
1"	-0.01" to 0.06"	Stress Relieved	3/8"	0000000	000000
1 1/2"	-0.01" to 0.06"	Stress Relieved	3/8"	0000000	000000
2"	-0.01" to 0.09"	Stress Relieved	3/8"	0000000	000000
2 1/2"	-0.01" to 0.09"	Stress Relieved	3/8"	0000000	000000
3"	-0.01" to 0.11"	Stress Relieved	3/8"	0000000	000000
6" × 12"
3/4"	-0.01" to 0.03"	Stress Relieved	3/8"	0000000	000000
1"	-0.01" to 0.06"	Stress Relieved	3/8"	0000000	000000
1 1/2"	-0.01" to 0.06"	Stress Relieved	3/8"	0000000	000000
2"	-0.01" to 0.09"	Stress Relieved	3/8"	0000000	000000
2 1/2"	-0.01" to 0.09"	Stress Relieved	3/8"	0000000	000000
3"	-0.01" to 0.11"	Stress Relieved	3/8"	0000000	000000
12" × 12"
3/4"	-0.01" to 0.03"	Stress Relieved	3/8"	0000000	000000
1"	-0.01" to 0.06"	Stress Relieved	3/8"	0000000	000000
1 1/2"	-0.01" to 0.06"	Stress Relieved	3/8"	0000000	000000
2"	-0.01" to 0.09"	Stress Relieved	3/8"	0000000	000000
2 1/2"	-0.01" to 0.09"	Stress Relieved	3/8"	0000000	000000
3"	-0.01" to 0.11"	Stress Relieved	3/8"	0000000	00000000

Easy-to-Weld Wear-Resistant 8620 Alloy Steel Sheets

Yield Strength: Not Rated
Hardness: Not Rated
Heat Treatable: Yes
Max. Hardness After Heat Treatment: Not Rated
Fabrication: Hot Rolled
Specifications Met: ASTM A829

Made of 8620 alloy steel, these sheets have low levels of carbon that make them easy to weld. High nickel, chromium, and molybdenum content make them resistant to wear. For even greater wear resistance, you can harden their surface with heat treating. They’re often used for wear plates and structural supports. These sheets have been manufactured to meet ASTM standards for quality and performance.

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.

			6" × 6"		12" × 12"		24" × 24"
Thick.	Thick. Tolerance	Flatness Tolerance		Each		Each		Each
3/4"	-0.01" to 0.04"	3/8"	00000000	000000	00000000	0000000	00000000	0000000
1"	-0.01" to 0.07"	3/8"	00000000	00000	00000000	000000	00000000	000000
1 1/4"	-0.01" to 0.07"	3/8"	00000000	00000	00000000	000000	00000000	000000
1 1/2"	-0.01" to 0.07"	3/8"	00000000	000000	00000000	000000	00000000	00000000
2"	-0.01" to 0.07"	3/8"	00000000	000000	00000000	000000	00000000	00000000