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METAL GRADES

A847 Grade Atmospheric Corrosion-Resistance Steel

ASTM A847 is a specification for high strength low alloy (HSLA) weathering steel cold-formed and welded into square and rectangular tubing and pipe. A847 steel pipe and tube are widely used products which are ideal for atmospheric corrosion resistance and are generally left unpainted. Elements such as copper, chromium, nickel and silicon are used for enhanced corrosion resistance. A847 is employed in applications anywhere corrosion resistance is the critical factor and is widely used for fencing, signposts, and sign structures (highway DOT). Its attractive finish makes it highly suitable for pedestrian bridges, highway bridges, outdoor pavilions, architectural exposed structural applications, and more.

Yield/Tensile Strength

Metric

Imperial

Tensile Strength, Ultimate

483 MPa

70,000 ksi

Tensile Strength, Yield

345 MPa

50,000 ksi

Elongation at Break  

(in 50 mm)

N/A

N/A

Material Chemistry

C

MN

P

S

CU

0.24% max

1.40% max

0.15% max

0.06% max

0.20%