What is steel grade SS400 equivalent

What is steel grade SS400 equivalent

The steel grade SS400 is mild steel in JIS standard. It has a lot of equivalent materials, such as A283C, FE360B, E24-2, Q235B, EN S235JR, DIN ST37-2, etc. Those steel grade SS400 equivalent materials have little difference in chemical composition and mechanical properties, below are some of the grades comparison for your reference:

The steel grade SS400 equivalent materials chemical composition: (%)

Grade C (t≤16mm) Si Mn P S Cu N
SS400 0.050 max 0.050 max
Q235B 0.20 max 0.35 max 1.40 max 0.045 max 0.045 max
A36 0.26 max 0.40 max 0.040 max 0.050 max 0.20 min
A283C 0.24 max 0.04 max 0.09 max 0.035 max 0.040 max 0.20 min
S235JR 0.19 max 1.5 max 0.045 max 0.045 max 0.60 max 0.014 max
ST37-2 0.21 max 0.065 max 0.065 max 0.010 max

The steel grade SS400 equivalent materials 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
SS400 245 400-500      
Q235B 235 370-500 26 20 27
A36 250 400-550 23
A283C 205 380-515 25
S235JR 235 360-510 26 20 27
ST37-2 235 360-510 26 20 27

The steel grade SS400 equivalent materials are always supplied in hot rolled condition. They are popular for general structural purposes, and mainly for use in riveted, bolted, or welded construction of bridges and buildings.