A709Gr50W Type A

High strength low alloy steel plate ASTM A709GR.50W also named as weathering steel plate A709 Grade 50W in advantage of its property in atmosphere corrosion resistance.According to the different main chemical elements contains,A709 Grade 50W was divided as A709Gr50w type A, A709Gr50w type B, A709Gr50w type C.These three steel grades are equivalent to specification ASTM A 588/A 588M A588 Grade A,A588 Grade B and A588 Grade C.Low alloy steel plate A709 Grade 50W also owned the same minimum limited yield strength at 345 Mpa as A709 Grade 50 steel plate.

Technical Requirements & Additional Services for A709Gr50W Type A steel plate:
♦ High tension test
♦ Low temperature impacting test
♦ Simulated post-welded heat treatment (PWHT)
♦ Issued Orginal Mill test certificate under EN 10204 FORMAT 3.1/3.2
♦ When cooper steel is specified for A709Gr50W,the content Cu≥0.20%
♦ Shot blasting and Painting,Cutting and welding as per end user’s demands 

►Mechnical property for A709 Grade 50W Type A lsteel plate:

Yield strength (≥Mpa)	Tensile strength (≥Mpa)	Elongation in ≥,%
345	485	200mm	50mm
		18	21

►Chemical composition for A709Gr50W Type A steel plate (Heat Analysis Max%)

Main chemical elements composition of A709Gr50W Type A steel plate
C	Si	Mn	P	S	Ni	Cr	Cu	V
0.19	0.30-0.65	0.80-1.25	0.04	0.05	0.40	0.40-0.70	0.25-0.40	0.02-0.10