More generally, A588 angle steels are high-strength low-alloy steels with particularly good corrosion resistance. This resistance of A588 angle steels comes from the capacity of the alloying element to form a tightly adhering patina, or rust layer.
when oxidizing, The main difference between weathering steels and carbon steel is that this patina essentially acts as a protective layer for the steel, decreasing further corrosion rates. A588 steel mainly includes A588 Gr.A steel, A588 Gr.B steel, A588 Gr.C steel, and all of these steel grade are the main steel product Bebon steel.
A588 angle steels chemical compositions:
Iron • 97% – 98.2%
Chromium • 0.40% – 0.65%
Copper • 0.25% – 0.40%
Manganese • 0.90% – 1.25%
Phosphorous • < 0.040%
Silicon • 0.15% – 0.30%
Sulfur • < 0.050%
Vanadium • 00.020% – 0.10%
A588 angle steels mechanical properties:
Tensile: 70 ksi min (4 inch and under), 67 ksi min (4-5) 63 ksi min (Over 5-8)
Yield: 50 ksi min (4 and under), 46 ksi min (4- 5) 42 ksi min (Over 5-8)
Elongation: 16 percent min in 8 inch 19 percent min in 2 inch (for plates wider than 24 inch)in sheet.
Tests and inspections for A588 angle steels
A588 angle steels heat analysis shall be performed where the low-alloy structural steel materials shall conform to the required chemical composition for carbon, manganese, phosphorous, sulfur, silicon, nickel, chromium, molybdenum, copper, vanadium, and columbium. A588 angle steel samples shall also undergo the tensile test and conform to required values of tensile strength, yield point, and elongation.
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