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Q355C Steel Material

Q355C Steel Material

Q355C steel belongs to the Q355 low-alloy high-strength steel under GB/T1591-2018 standard. There are also Quality B, and Quality D. Q355B, Q355C and Q355D have little differences in chemical composition and mechanical properties. Below is the detailed information about the Q355C material.

Which grade equal to Q355C steel in GB/T1591-2018?

Q345C in GB/T1591-2008
S355J0 in EN 10025-2:2004
S355C in ISO 630-2: 2011

What is the chemical composition(%) of Q355C steel?

C max. Si max. Mn P max. S max. Cr max. Ni max. Cu max. N max. Nb V Ti Mo max N max
0.20 0.50 0.90-1.65 0.030 0.030 0.30 0.50 0.40 0.012 0.005 - 0.05 0.01-0.12 0.006 - 0.05 0.10 0.015
What is the mechanical properties of Q355C steel plate?
Grade Yield strength MPa in different thickness mm
≤16 16-40 40-63 63-80 80-100 100-150 150-200 200-250
Q355C ≥355 ≥345 ≥335 ≥325 ≥315 ≥295 ≥285 ≥275
Tensile strength and elongation in different thickness mm
Grade Tensile strength MPa Elongation % min.
≤100 100-150 150-250 ≤40 40-63 63-100 100-150 150-250 250-400
Q355C 470-630 450-600 450-600 22 21 20 18 17 17
As a supplier of Q355 low-alloy high-strength steel, the company can supply Q355 high-strength steel plate, Q355 steel angles, Q355 hot rolled steel beams with prime quality. They can be delivered in hot rolled, normalized, or thermomechanical rolled condition.
 

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