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Q345B equivalent ASTM material A572 Grade 50 steel is low alloy high strength steel, which is also shorten as A572 Grade 50 HSLA steel. The most popular form of A572 Grade 50 steel is A572 Grade 50 steel plate. And the A572 Grade 50 steel plate can be rolled into A572 Grade 50 steel pipe and can be weled to A572 Grade 50 H beam, A572 Grade 50 steel structures also.
Q345B equivalent ASTM material A572 Grade 50 steel chemical composition:
| Grade | C (t≤16mm) | Si | Mn | P | S | Nb | V | Ti | Cr | Ni | Cu | N | Mo |
| Q345B | 0.20 max | 0.50 max | 1.70 max | 0.035 max | 0.035 max | 0.07 max | 0.15 max | 0.20 max | 0.30 max | 0.50 max | 0.30 max | 0.012 max | 0.1 max |
| A572 Grade 50 | 0.23 max | 0.40 max | 1.35 max | 0.04 max | 0.05 max | - | - | - | - | - | - | - | - |
Q345B equivalent ASTM material A572 Grade 50 steel mechanical properties:
| Grade | Yield strength ReH/(N/mm2) (t≤16mm) min | Tensile strength Rm/(N/mm2) (3mm≤t≤16mm) | Elongation A/%(3mm≤t≤40mm) min | Charpy V test | |
| Temperature/℃ | Impact energy (Longitudinal)/J min | ||||
| Q345B | 345 | 470-630 | 20 | 20 | 34 |
| A572 Grade 50 | 345 | 450 | 18 | - | - |
Q345B equivalent ASTM material A572 Grade 50 steel has been widely used in building steel structures, construction machinery and other steel structures. BBN steel is leading China supplier of Q345B equivalent ASTM material A572 Grade 50 steel. We can offer Q345B steel, A572 Grade 50 steel technical data, price, and products to you.
