ASTM A595 / A595M Grade A

Chemical Properties

Elements	Carbon Steel	HSLA SS	HSLAS Cl1	HSLAS Cl2
Carbon	0.15–0.25	0.25 max	0.23 max	0.15 max
Manganese	0.30–0.90	1.35 max	1.35 max	1.35 max
Phosphorus	0.035 max	0.035 max	0.04 max	0.04 max
Sulfur	0.035 max	0.04 max	0.04 max	0.04 max
Silicon	0.060 maxB	0.060 maxB	0.060 maxB	0.060 maxB
Copper	...	0.20 max	0.20 max	0.20 max
Chromium	...	0.15 max	0.15 max	0.15 max
Nickel	...	0.20 max	0.20 max	0.20 max
Molybdenum	...	0.06 max	0.06 max	0.06 max
Vanadium	...	0.008 max	0.01 min	0.01 min
Columbium	...	0.008 max	0.005 min	0.005 min
Nitrogen	...	A	A	A
Aluminum	A	A	A	A

Note A: There is no limit; however, the analysis shall be reported. Note B: Silicon or silicon in combination with aluminum must be sufficient to ensure uniform mechanical properties. Their sum shall be greater than or equal to 0.020 %.

Mechanical Properties

Grade	Yield point, min, ksi [MPa]	Ultimate tensile strength, min, ksi [MPa]	Elongation in 2 in. [50 mm], min %
55 [380]	65 [450]	23

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