Q550 Bar

High-Strength

Q550 (Bar)

High-strength structural steel Q550 Bar.

Chemical Composition (%)

B0.004
C0.18
MN2
MO0.3
NB0.11
SI0.6
V0.12

Mechanical Properties

Yield:550MPa; Tensile:650MPa; Elong:15%; 220HB

Chinese Standard

GB/T 1591

Applications

Structural steel for construction and engineering

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