A572 Grade 50 material is a high-strength low-alloy columbium-vanadium structural steel. A572 Grade 50 steel is similar to Q345B material. Q345B steel under GB/T 1591 standard is a low alloy high strength steel.
Chemical compostion (%) for A572 Grade 50 and Q345B steel
| Grade |
C |
Mn |
P |
S |
Si |
| A572Gr50 |
≤0.23 |
≤ 1.35 |
≤0.030 |
≤0.030 |
≤0.40 |
| Q345B |
≤0.20 |
1.00-1.60 |
≤0.040 |
≤0.040 |
≤0.55 |
Mechanical properties (%) for A572 Grade 50 and Q345B steel
| Grade |
Yield Strength Mpa min. |
Tensile Strength Mpa |
Elongation % in 200mm |
Elongation % in 50mm |
| A572Gr50 |
345 |
450 min. |
18 |
21 |
| Q345B |
345 |
470-630 |
22 |
22 |
If you are looking for A572 Grade 50 high strength steel or Q345B steel alloy, welcome to contact us.
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