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ASTM A588 Weathering Steel Plate

ASTM A588 specifies high strength low alloy weathering steel for structural purposes, it includes 4 grades: Grade A, Grade B, Grade C, Grade K. For it has protective oxide film on steel surface, compared with ASTM A36 and ASTM A572-50, it has better cossrosion resistant characteristic, use ASTM A588 steel plate instead of common carbon steel will make the structure lighter for it has higher strength. It has many application fields: outdoor sculptures, crane, bridges, rail cars, transmission towers, highway poles and shipbuilding. AGICO-ANSON specializes in weathering steel plate, with years of project experience, we supply high quality ASTM A588 steel plate with best service.

ASTM A588 Chemical Composition

Steel Grade C Mn P S Si Cu Ni Cr V Mo Nb
A588 Grade A ≤0.19 0.80-1.25 ≤0.04 ≤0.05 0.3-0.65 0.25-0.40 ≤0.40 0.4-0.65 0.02-0.10
A588 Grade B ≤0.20 0.75-1.35 ≤0.04 ≤0.05 0.15-0.50 0.20-0.40 ≤0.50 0.4-0.70 0.01-0.10
A588 Grade C ≤0.15 0.8-1.35 ≤0.04 ≤0.05 0.15-0.40 0.20-0.50 0.25-0.50 0.3-0.50 0.01-0.10
A588 Grade K ≤0.17 0.5-1.20 ≤0.04 ≤0.05 0.25-0.50 0.30-0.50 ≤0.40 0.4-0.70 ≤0.10 0.005-0.50

ASTM A588 Mechanical Property:

ASTM A588 Steel Plates and bars Other shapes
<100mm ≥100-125mm >125-200  
Tensile strength min MPa 485 460 435 485
Yield strength min MPa 345 315 290 345
Elongation min 21 21 21 21

ASTM A588 Equivalent steel standards:

ASTM A588 GermanyDIN,WNr EnglandBS ItalyUNI EuropeEN
Grade A WTSt 52-3 WR 50 C Fe 510 D2K1 S355J2G1W