ASTM A516 / A516M Grade 55

Chemical Properties

Carbon					Manganese		Phosphorus,max	Sulfur,max	Silicon
1/2 in. [12.5 mm] and under	Over 1/2 in. to 2 in. [12.5 to 50 mm], incl	Over 2 in. to 4 in. [50 to 100 mm], incl	Over 4 to 8 in. [100 to 200 mm], incl	Over 8 in. [200 mm]	1/2 in. [12.5 mm] and under:	Over 1/2 in. [12.5 mm]:
0.18	0.20	0.22	0.24	0.26	0.55–0.98	0.55–1.30	0.025	0.025	0.13–0.45

Mechanical Properties

Tensile strength,min: ksi [MPa]	Yield strength,minA: ksi [MPa]	Elongation in 8 in. [200 mm] min, %B	Elongation in 2 in. [50 mm] min, %B
55–75 [380–515]	30 [205]	23	27

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