High strength ASTM A588 steel plate standard for weather resistant

The ASTM A588 steel plate is suitable for many unpainted situations. Compared with A36 and A572 Gr.50 carbon steel with or without copper, ASTM A588 steel plate has better atmospheric corrosion resistance when properly exposed to the atmosphere.

ASTM A588 steel plate chemical composition

Grade	C	Mn	P	S	Si	Ni	Cr	Mo	Cu	V	Nb
A588 Gr.A	≤0.19	0.8-1.25	≤0.04	≤0.05	0.3-0.65	≤0.4	0.4-0.65	-	0.25-0.4	0.02-0.1	-
A588 Gr.B	≤0.2	0.75-1.35	≤0.04	≤0.05	0.15-0.5	≤0.5	0.4-0.7	-	0.20-0.4	0.01-0.1	-
A588 Gr.C	≤0.15	0.8-1.25	≤0.04	≤0.05	0.15-0.5	0.25-0.5	0.5-0.5	-	0.20-0.5	0.01-0.1	-
Gr.K	≤0.17	0.5-1.2	≤0.04	≤0.05	0.25-0.5	≤0.4	0.4-0.7	0.1	0.3-0.5	-	0.005-0.05

ASTM A588 steel plate mechanical properties

Grade	Thickness	Yield Strength Mpa	Tensile Strength Mpa	Elongation % in 200mm	Elongation % in 50mm
Gr.A/Gr.B/Gr.C/Gr.K	less 100mm	≥345	≥485	18	21
	100-125mm	≥315	≥460
	125-200mm	≥290	≥435

ASTM A588 steel plate equivalent grades

DIN	BS	UNI	EN
WTSt 52-3	WR 50C	Fe510D2K1	S355J2G1W

ASTM A588 steel plate is designed primarily for unpainted applications to reduce maintenance costs, such as painting. Since its development, ASTM A588 steel plate has been widely used in bridges, railway vehicles, cranes, transmission towers, highway poles, chemical plants, factories and real medical shipbuilding and other fields.

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