ASTM A542 / A542M Type C Class 4A

Chemical Properties

Carbon	Manganese	Phosphorus	Sulfur	Silicon	Chromium	Molybdenum	Copper	Nickel	Vanadium	Titanium	Boron	Columbium
0.08–0.18	0.25–0.66	0.025	0.025	0.13	2.63–3.37	0.85–1.15	0.28	0.28	0.18–0.33	0.015–0.035	0.005–0.045	0.001–0.003

Mechanical Properties

Class	Tensile strength,min: ksi [MPa]	Yield strength,min: ksi [MPa]	Elongation in 2 in. [50 mm] min, %A,B
Class 4a	85–110 [585–760]	60 [415]	18

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