A500 Grade C

The usual US HSS grade: 50 ksi (345 MPa) yield shaped, 46 ksi (315 MPa) round, 62 ksi (425 MPa) tensile.

Compared with S355J2H on its equivalents table.

All values

Strength

Yield strength ReH

Upper yield strength guaranteed by the product standard (minimum).

Condition	Value	Evidence
	≥ 345MPa	Corroborated
	≥ 315MPa	Single source

Tensile strength Rm

Ultimate tensile strength. Product standards give a range or a minimum.

Condition	Value	Evidence
	≥ 425MPa	Corroborated

Ductility

Elongation after fracture A

Minimum elongation; depends on gauge length and test direction.

Condition	Value	Evidence
	≥ 21%	Corroborated

Chemical composition

Show on the periodic table

A500 Grade C, heat analysis, % by mass, maximum

Element	Applies to	Max %	Evidence
C	all thicknesses	0.23	Single source
Mn	all thicknesses	1.35	Single source
P	all thicknesses	0.035	Single source
S	all thicknesses	0.035	Single source

Listed as equivalent to

S355J2H (EN 10219-1) — Shaped A500 Grade C guarantees 345 MPa (50 ksi) and only 425 MPa tensile; round tubes only 315 MPa (46 ksi). No impact test.

Sources here are public pages that reproduce ASTM A500/A500M. For design and acceptance, the standard edition named in your specification and the inspection certificate (EN 10204 3.1) of the delivered product take precedence.