Q235B is one of the common steels in China. Its low price can be used for most products with low performance requirements.
Hot-rolled Q235B steel plate has certain elongation, strength, good toughness and castability, and is easy to stamp and weld. It is widely used in the manufacture of general mechanical parts, mainly for welding structural parts with low quality requirements in construction and bridge engineering.
| Grade | Chemical composition % | |||||
| C | Si | Mn | P | S | Cu | |
| Q235B | 0.2 max | 0.35 max | 1.40 max | 0.045 max | 0.045 max | - |
| A36 | 0.26 max | 0.40 max | - | 0.04 max | 0.05 max | 0.20 min |
| 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 | ||||
| Q235B | 235 | 370-500 | 26 | 20 | 27 |
| A36 | 250 | 400-550 | 23 | - | - |
| Item | Material | Thickness (mm) | Width (mm) |
Length (mm) |
| MS Hot Rolled Steel Plate | Q235 SS400 A36 | 6-25 | 1500 - 2500 | 4000 - 12000 |
| EN10025 HR Steel Plate | S275 / S275JR ,S355/S355 JR | 6-30 | 1500 - 2500 | 4000 - 12000 |
| Boiler Steel Plate | Q245R , Q345R A516 Gr.60 , A516 Gr.70 |
6-40 | 1500-2200 | 4000 - 12000 |
| Bridge Steel Plate | Q235, Q345, Q370, Q420 | 1.5-40 | 1500-2200 | 4000 - 12000 |
| Ship-building Steel Plate | CCSA/B/C/D/E, AH36 | 2-60 | 1500-2200 | 4000 - 12000 |
| Wear Resistant Steel Plate | NM360, NM400, NM450, NM500, NM550 | 6-70 | 1500-2200 | 4000 - 8000 |
| Corten Steel Plate | SPA-H, 09CuPCrNiA, Corten A | 1.5-20 | 1100-2200 | 3000 - 10000 |
