Q345R material is usually produced in hot rolled state: hot rolled Q345R steel plate, Q345R steel coil, Q345R steel sheet and so on.
Q345R material chemical composition:
| Grade | C % | Si % | Mn % | Cu % | Ni % | Cr% | Mo % | V % | Ti % | Alt % | P % | S % | Nb |
| Q345R | 0.20 | 0.55 | 1.2-1.7 | 0.30 | 0.30 | 0.30 | 0.08 | 0.050 | 0.030 | 0.020 | 0.025 | 0.010 | 0.050 |
Q345R material mechnical property:
| Thickness (mm) | > 3 ≤ 16 | > 16 ≤ 36 | > 36 ≤ 60 | >60 ≤ 100 | >100 ≤ 150 | >150 |
| Yield strength (≥Mpa) | 345 | 325 | 315 | 305 | 285 | 265 |
| Tensile strength (Mpa) | 510-640 | 500-630 | 490-620 | 480-610 | 470-600 | |
Q345R material has comprehensive mechanical property and welding property. Q345R material shows good performance in structural purposes, so it is widely used as welding structural part in manufacturing of ships, railway and vehicles, bridges, boiler, pressure vessel container, steel oil tanks, etc.
The minimum yield strength of Q345R material is 345 Mpa for thin thickness and tensile strength above 510 Mpa. The Q345R equivalent ASTM material is A516 Grade 70 in specification of ASTM A516/A516M.
For more information about Q345R and other pressure vessel steel grades, welcome to consult BBN steel.
Just like you, 70% customers choose long-term cooperation with BBN steel not only for our good product and service quality, good reputation in the international market, but also for our experienced one-stop raw material supply and further steel processing!
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