What is A283C steel equivalent grade in China

What is A283C steel equivalent grade in China

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.