ASTM A572 steel

Steel Plate ASTM A572/A572M
ASTM A572 Specification refers to High-Strength Low-Alloy Steel Plate for structural building, among the 5 steel grades of 42, 50, 55, 60 and 65, Grade 50 is one most common steel in applications where need more strength and less weight, use steel plate of this grade other than ordinary carbon steel will make the steel structure with same steel strength but lighter weight.

ASTM A572 Grade 65

C max	Mn  max	P max	S max	SI max
0.23	1.35	0.04	0.05	0.4
Yield Strength Mpa	Tensile Strength Mpa	Elongation % in 200mm	Elongation % in 50mm
450	550	15	17

ASTM A572 Grade 60

C max	Mn  max	P max	S max	SI max
0.26	1.35	0.04	0.05	0.4
Yield Strength Mpa	Tensile Strength Mpa	Elongation % in 200mm	Elongation % in 50mm
415	520	16	18

ASTM A572 Grade 55

C max	Mn  max	P max	S max	SI max
0.25	1.35	0.04	0.05	0.4
Yield Strength Mpa	Tensile Strength Mpa	Elongation % in 200mm	Elongation % in 50mm
380	485	17	20

ASTM A572 Grade 50

C max	Mn  max	P max	S max	SI max
0.23	1.35	0.04	0.05	0.4
Yield Strength Mpa	Tensile Strength Mpa	Elongation % in 200mm	Elongation % in 50mm
345	450	18	21

ASTM A572 Grade 42

C max	Mn  max	P max	S max	SI max
0.21	1.35	0.04	0.05	0.4
Yield Strength Mpa	Tensile Strength Mpa	Elongation % in 200mm	Elongation % in 50mm
290	415	20	24