ASTM A588 / A588M Steel
ASTM A588 / A588M Steel
ASTM A588 / A588M Steel
Standard specification for high-strength low-alloy structural steel, up to 50 ksi [345 MPa] minimum yield point, with atmospheric corrosion resistance.
Standard specification for high-strength low-alloy structural steel, up to 50 ksi [345 MPa] minimum yield point, with atmospheric corrosion resistance.
The required ASTM G101 Corrosion Resistance Index must be ≥ 6.0.    In addition to the typical application in welded bridges and buildings, the specification is also commonly used in passenger rail cars.

The specifications:
Thickness: 3mm--150mm
Width: 30mm--4000mm
Length: 1000mm--12000mm

Standard: ASTM EN10025 JIS GB


Technical Data
ASTM A588 Chemical Composition
A588 Steel Composition


Grade AGrade BGrade KGrade C
Carbon0.19%0.2%0.17%0.17%
Manganese0.8-1.25%0.75-1.35%0.50-1.20%0.50-1.20%
Phosphorus0.03%0.03%0.03%0.03%
Sulfur0.03%0.03%0.03%0.03%
Silicon0.30-0.65%0.15-0.50%0.25-0.50%0.25-0.50%
Nickel0.4%0.5%0.4%0.4%
Chromium0.4-0.65%0.4-0.7%0.4-0.7%0.4-0.7%
Molybdenum......0.1%0.1%
Copper0.25-0.4%0.2-0.4%0.3-0.5%0.3-0.5%
Vanadium0.02-0.10%0.01-0.10%...
Columbium......0.005-0.05%0.005-0.05%
Plate Properties
Grade A588 Properties
GRADETHICKNESSTENSILE KSIYIELD KSI% ELONG. MIN
8"2"
A588.75"THRU 4"70MIN50 YP MIN1619
>4"THRU 4"67MIN46 YP MIN-
>5"THRU 8"63MIN42 YP MIN

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.
Typical Uses
This steel can be left unpainted making it ideal application including bridges, buildings, and other structures.

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