ASTM A709 Grade 36 steel

ASTM A709 Grade 36 steel specification covers carbon and high-strength low alloy steel structural shapes, plates and bars, and quenched and tempered alloy steel for structural plates intended for use in bridges.

ASTM A709 Grade 36 material chemical composition:

Thickness ,mm	Section steel all	Steel plate				Steel bars
Thickness ,mm	Section steel all	≤20	20-40	40-65	65-100	≤20	20-40	40-100
C max %	0.25	0.25	0.25	0.25	0.27	0.26	0.27	0.28
Mn %	...	...	0.80-1.20	0.80-1.20	0.80-1.20	...	0.60-0.90	0.60-0.90
P max %	0.04	0.04	0.04	0.04	0.04	0.04	0.04	0.04
S max %	0.05	0.05	0.05	0.05	0.05	0.05	0.05	0.05
Si	0.40 max	0.40 max	0.40 max	0.15-0.40	0.15-0.40	0.40 max	0.40 max	0.40 max
Cu min %	0.20	0.20	0.20	0.20	0.20	0.20	0.20	0.20

ASTM A709 Grade 36 low alloy steel mechanical properties

Grade	Steel plate thickness,mm	Section steel thickness,mm	Yield strength [mpa]	Tensile strength [mpa]	Elongation min %
					Steel plate		Section steel
					8in[200mm]	2in[50mm]	8in[200mm]	2in[50mm]
36	≤100	≤75	[250]min	400-550	20	23	20	21
		>75	[250]min	400min	...	...	20	19

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