Q420E

Alloy Steel

Q420E

Low-alloy high-strength structural steel. (GB/T 1591; equiv GB Q345 / EN S355 / ASTM A572 Gr50). Nominal values—confirm mill certificate.

Chemical Composition (%)

C0.2
MN1.7
P0.035
S0.035
SI0.55

Mechanical Properties

Tensile:470MPa

Chinese Standard

GB/T 1591 Q420E

Equivalent Standards

GB Q345 / EN S355 / ASTM A572 Gr50

Applications

低合金高强度结构钢。

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