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A283C steel is common carbon structural steel used in heavy industry and oil plants to build steel tanks and vessels. A283C steel has good weldability and it is economic for use. The A283C steel equivalent grade in China is Q235B, whose old technical standard is GB/T700, and new standard is GB/T3274.
A283C steel equivalent Q235B and A283C steel chemical composition %:
| Grade | C (t≤16mm) | Si | Mn | P | S | Cu |
| Q235B | 0.2 max | 0.35 max | 1.40 max | 0.045 max | 0.045 max | - |
| A283C | 0.24 max | 0.04 max | 0.09 max | 0.035 max | 0.04 max | 0.20 min |
A283C steel equivalent Q235B and A283C 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 | ||||
| Q235B | 235 | 370-500 | 26 | 20 | 27 |
| A283C | 205 | 380-515 | 25 | - | - |
A283C steel equivalent Q235B is also very popular on the International market now, and get known to more clients. Compared to A283C steel, Q235B steel has lower price, more stock resources and quiker delivery etc. advantages. But as they also has differences in both chemical composition and mechanical properties, it needs professional engineer and technician approval when choose between the two materials.
