SAE AMS6360 Steel | McMaster-Carr

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40,000 psi to 99,999 psi

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Rockwell C20

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MIL-T-6736

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Rockwell C49

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9A991

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119 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.

Easy-to-Weld 4130 Alloy Steel Round Tubes

Yield Strength: See table
Hardness: See table
Heat Treatable: Yes
Max. Hardness After Heat Treatment: See table
Specifications Met: See table

4130 alloy steel has a low carbon content that provides good weldability. It's often used for gears, fasteners, and structural applications. These tubes meet military specifications and SAE dimensional standards.

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.

0.028" Wall Thick. (-0.004" to 0.004" Tolerance)
OD	OD Tolerance	ID	Yield Strength	Hardness	Maximum Hardness After Heat Treatment	Specifications Met	Straightness Tolerance		1 ft. Lg.	3 ft. Lg.	6 ft. Lg.
1/4"	-0.005" to 0.005"	0.194"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	00000	000000	000000
3/8"	-0.005" to 0.005"	0.319"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	0000	00000	00000
1/2"	-0.005" to 0.005"	0.444"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	0000	00000	00000
5/8"	-0.005" to 0.005"	0.569"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	0000	00000	00000
3/4"	-0.005" to 0.005"	0.694"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	0000	00000	00000
1"	-0.005" to 0.005"	0.944"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	00000	00000	00000
0.035" Wall Thick. (-0.005" to 0.005" Tolerance)
3/16"	-0.005" to 0.005"	0.118"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	0000	00000	00000
1/4"	-0.005" to 0.005"	0.18"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	0000	00000	00000
5/16"	-0.005" to 0.005"	0.243"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	0000	00000	00000
3/8"	-0.005" to 0.005"	0.305"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	0000	00000	00000
1/2"	-0.005" to 0.005"	0.43"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	0000	00000	00000
5/8"	-0.005" to 0.005"	0.555"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	0000	00000	00000
3/4"	-0.005" to 0.005"	0.68"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	0000	00000	00000
7/8"	-0.005" to 0.005"	0.805"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	00000	00000	00000
1"	-0.005" to 0.005"	0.93"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	00000	00000	00000
1 1/8"	-0.005" to 0.005"	1.055"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	00000	00000	00000
1 1/4"	-0.005" to 0.005"	1.18"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	00000	00000	00000
1 3/8"	-0.005" to 0.005"	1.305"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	00000	00000	00000
1 1/2"	-0.013" to 0.013"	1.43"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	00000	00000	00000
0.049" Wall Thick. (-0.007" to 0.007" Tolerance)
1/4"	-0.005" to 0.005"	0.152"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	0000	00000	00000
5/16"	-0.005" to 0.005"	0.215"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	0000	00000	00000
3/8"	-0.005" to 0.005"	0.277"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	0000	00000	00000
7/16"	-0.005" to 0.005"	0.34"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	0000	00000	00000
1/2"	-0.005" to 0.005"	0.402"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	0000	00000	00000
5/8"	-0.005" to 0.005"	0.527"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	0000	00000	00000
3/4"	-0.005" to 0.005"	0.652"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	0000	00000	00000
7/8"	-0.005" to 0.005"	0.777"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	00000	00000	00000
1"	-0.005" to 0.005"	0.902"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	00000	00000	00000
1 1/8"	-0.005" to 0.005"	1.027"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	00000	00000	00000
1 1/4"	-0.005" to 0.005"	1.152"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	00000	00000	00000
1 3/8"	-0.005" to 0.005"	1.277"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	00000	00000	00000
1 1/2"	-0.005" to 0.005"	1.402"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	00000	00000	00000
1 3/4"	-0.019" to 0.019"	1.652"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	00000	00000	000000
2"	-0.020" to 0.020"	1.902"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	00000	00000	000000
0.058" Wall Thick. (-0.009" to 0.009" Tolerance)
3/8"	-0.005" to 0.005"	0.259"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	0000	00000	00000
7/16"	-0.005" to 0.005"	0.322"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	00000	00000	00000
1/2"	-0.005" to 0.005"	0.384"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	00000	00000	00000
5/8"	-0.005" to 0.005"	0.509"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	00000	00000	00000
3/4"	-0.005" to 0.005"	0.634"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	00000	00000	00000
7/8"	-0.005" to 0.005"	0.759"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	00000	00000	00000
1"	-0.005" to 0.005"	0.884"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	00000	00000	00000
1 1/8"	-0.005" to 0.005"	1.009"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	00000	00000	00000
1 1/4"	-0.005" to 0.005"	1.134"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	00000	00000	00000
1 3/8"	-0.005" to 0.005"	1.259"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	00000	00000	00000
1 1/2"	-0.005" to 0.005"	1.384"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	00000	00000	00000
1 3/4"	-0.010" to 0.010"	1.634"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	00000	00000	00000
0.065" Wall Thick. (-0.01" to 0.01" Tolerance)
1/4"	-0.005" to 0.005"	0.12"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	0000	00000	00000
5/16"	-0.005" to 0.005"	0.183"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	0000	00000	00000
3/8"	-0.005" to 0.005"	0.245"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	0000	00000	00000
7/16"	-0.005" to 0.005"	0.308"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	0000	00000	00000
1/2"	-0.005" to 0.005"	0.37"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	00000	00000	00000
9/16"	-0.005" to 0.005"	0.433"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	00000	00000	00000
5/8"	-0.005" to 0.005"	0.495"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	00000	00000	00000
3/4"	-0.005" to 0.005"	0.62"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	00000	00000	00000
7/8"	-0.005" to 0.005"	0.745"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	00000	00000	00000
1"	-0.005" to 0.005"	0.87"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	00000	00000	00000
1 1/8"	-0.005" to 0.005"	0.995"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	00000	00000	00000
1 1/4"	-0.005" to 0.005"	1.12"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	00000	00000	00000
1 3/8"	-0.005" to 0.005"	1.245"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	00000	00000	00000
1 1/2"	-0.005" to 0.005"	1.37"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	00000	00000	00000
1 5/8"	-0.010" to 0.010"	1.495"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	00000	00000	00000
1 3/4"	-0.010" to 0.010"	1.62"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	00000	00000	00000
2"	-0.010" to 0.010"	1.87"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	00000	00000	000000
0.083" Wall Thick. (-0.012" to 0.012" Tolerance)
3/8"	-0.005" to 0.005"	0.209"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	00000	00000	00000
7/16"	-0.005" to 0.005"	0.272"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	00000	00000	00000
1/2"	-0.005" to 0.005"	0.334"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	00000	00000	00000
9/16"	-0.005" to 0.005"	0.397"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	00000	00000	00000
5/8"	-0.005" to 0.005"	0.459"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	00000	00000	00000
3/4"	-0.005" to 0.005"	0.584"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	00000	00000	00000
7/8"	-0.005" to 0.005"	0.709"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	00000	00000	00000
1"	-0.005" to 0.005"	0.834"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	00000	00000	00000
1 1/8"	-0.005" to 0.005"	0.959"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	00000	00000	00000
1 1/4"	-0.005" to 0.005"	1.084"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	00000	00000	00000
1 3/8"	-0.005" to 0.005"	1.209"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	00000	00000	00000
1 1/2"	-0.005" to 0.005"	1.334"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	00000	00000	00000
1 5/8"	-0.010" to 0.010"	1.459"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	00000	00000	000000
1 3/4"	-0.010" to 0.010"	1.584"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	00000	00000	000000
2"	-0.010" to 0.010"	1.834"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	00000	00000	000000
0.095" Wall Thick. (-0.014" to 0.014" Tolerance)
5/16"	-0.005" to 0.005"	0.123"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	00000	00000	00000
7/16"	-0.005" to 0.005"	0.248"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	00000	00000	00000
1/2"	-0.005" to 0.005"	0.31"	70,000 psi	Rockwell C20	Rockwell C49	MIL-T-6736, SAE AMS-T-6736, SAE AMS6360	0.030" per 3 ft.	000000000	00000	00000	00000