GB/T1591-2008 Q345B steel descriptionGrade: Q345B
Relative material: Q345A, Q345C, Q345D, Q345E
Standard: GB/T1591-2008
Equivalent: Q355B in GB/T1591-2018 standard, S355JR in EN10025-2:2004
Category: low alloy structural steel
Tensile requirement of Q345B steelQ345B steel tensile strength MPa (in different thickness)
Thickness |
≤16 |
16-40 |
40-63 |
63-80 |
80-100 |
100-150 |
150-200 |
200-250 |
Q345B |
≥345 |
≥335 |
≥325 |
≥315 |
≥295 |
≥285 |
≥275 |
≥265 |
Q345B steel yield strength MPa (in different thickness)
Thickness mm |
t≤100 |
100-150 |
150-250 |
Q345B |
470-630 |
450-600 |
450-600 |
Grade |
Elongation % in different thickness mm |
≤40 |
40-63 |
63-100 |
100-150 |
150-250 |
Q345B |
≥20 |
≥19 |
≥19 |
≥18 |
≥17 |
The company can supply Q345B steel plates,Q345B steel sheets, Q345B steel angles and Q345B steel pipes according to customer’s requirement. Welcome to contact us.
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