Q235 steel is a carbon structural steel. It is equivalent to A3 and C3 steel in the old standard GB700-79 grade, and it is the grade of Russian TOCT. The Q in the steel number represents the yield strength. Usually, the steel is used directly without heat treatment.
GB/T700 GB/T3274 Q235B mild steel plates/carbon steel So Q235B mild carbon steel plates are widely used in the manufacturing of general mechanical parts. Q235B mild steel plates/carbon steel plates are mainly used for the construction and bridge engineering etc. welding structures that have high requirement for quality. GB/T700 GB/T3274 Q235B mild steel plates/carbon steel plates chemical composition
Q235B Carbon structural steel plate is equal to steel grade ASTM A36,JIS G3101 SS400,EN 10025-2 S235JR.Q235B steel plate represents a yield point (s) of 235 Mpa, rank is grade Bs carbon structural steel. Q235B steel has a certain elongation, strength, good toughness and casting, easy stamping and welding, widely used in the manufacture of general mechanical parts.