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ASTM A588 Grade A channel steel

 

ASTM A588 Grade A channel steel


ASTM A588 Grade A is a high strength low-alloy structural steel in specification with improved atmospheric corrosion resistance for structural steel shapes such as angles, channel and beams, as well as steel plate and bars.

ASTM A588 Grade A is a HSLA steel containing small additions of copper, chromium and nickel. The atmospheric corrosion resistance of this steel is a minimum of four times that of regular carbon steel. These steels are often used unpainted and develop a weathered orange-brown surface that is resistant to corrosion. ASTM A588 Grade A channel steel is weldable, formable, and machinable when using the appropriate techniques.

Application: ASTM A-588 Grade A channel steel can be used in bridges, buildings, freight cars, construction equipment, smoke-stack liners, precipitators, transmission towers, and light poles where savings in weight and/or added durability are important.

Chemical composition for ASTM A588 Grade A channel steel (Heat Analysis Max%)


Chemical composition of A588 Grade A, %

Grade

C

Mn

P

S

Si

A588 Grade A

≤0.19

0.80-1.25

≤0.04

≤0.05

0.30-0.65

Cu

Ni

Cr

0.25-0.40

≤0.40

0.40-0.65

0.02-0.10 

Mechanical property for ASTM A588 Grade A channel steel:


Thickness(mm)

Yield strength (Mpa) Min.

Tensile strength (Mpa) Min.

Elongation in ≥,%

200mm

50mm

T≤100

345

485

18

21

100<T≤125

315

460

...

21

125<T≤200

290

435

...

21

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