A588 gr.a steel plate is an American Standard weathering steel plate, which is also a high strength low alloy steel with atmospheric corrosion resistance in accordance with ASTM A588 / a588m-05, 2. 8 mm ~ 200 mm thick a588 series high weather resistant bridge structural steel plates include A588 gr.a steel plate, a588 GRB, etc. The A588 gr.a steel plate is alloyed with Cu, P, Cr and Ni to form a protective layer on the surface of metal matrix, which has high atmospheric corrosion resistance.
3. Chemical composition of A588 gr.a steel plate:
C ≤0.19，Si 0.3~0.65, Mn 0.8~1.25, P≤0.03, S≤0.03, Ni≤0.4, Cr 0.4~0.65, Cu 0.25~0.4, V 0.02~0.1.
4. Mechanical properties of A588 gr.a steel plate: tensile strength MPa 485, yield strength 348, elongation after fracture 21.
5. Delivery status of A588 gr.a steel plate: hot rolling, tempering, normalizing + tempering, quenching and tempering.
6. Production A588 gr.a steel plate mode: fine grain smelting is adopted for A588 gr.a steel plate.
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