GB/T1591-1994 low alloy high strength structural steel

Standard category:

Material standarad

Standard system:

National standard(GB)

Type:

Carbon Steel

Specification in detail:

This standard stipulates chemical composition and mechanical properties of Q345A, Q345B, Q345C, Q345D, Q345E etc.

Q345 has good comprehensive performance, good weldability, both cold and heat treatment performance and corrosion resistance; grade C, D and E steel good low temperature toughness.

It is applicable to anchor bolts and nuts that need to be welded.