What is Chinese equivalent of DIN standard ST37 ms steel

ST37 steel is a German DIN standard ms steel, but it is a general steel grade. There are several small steel grades for ST37, such as ST37-2, ST37-3U, ST37-3N, RST37-2, UST37-2. Among those ST37 ms steel, ST37-2 is the most widely used and well known steel.

ST37-2 steel is carbon structural steel material, it is equivalent to Q235B carbon structural steel in China. ST37-2 steel and so on DIN standard ST37 ms steel are mainly used in construction and underground engineering. In addition, ST37-2 steel is also similar to the high-quality carbon structural steel 20# in China.

ST37-2 and Q235B steel chemical composition:

Grade	Number	C	C	C	C	C	P	S	N
Thickness	mm	≤16mm	16-30	30-40	40-63	63-100
St37-2	1.0037	0.21	0.25	0.25	0.25	0.25	0.065	0.065	0.01

 

Grade	C	Si	Mn	P	S
Q235B	0.20	0.35	1.40	0.045	0.045

ST37-2 and Q235B steel plate sheet mechanical properties:

Grade	Yield	Yield	Yield	Yield	Yield	Tensile	Tensile
Thickness	≤16mm	16-40mm	40-63mm	63-80	80-100mm	<3mm	3-100mm
St37-2	235	225	215	205	195	360-510	340-470

 

Grade	Yield	Yield	Yield	Yield	Yield	Yield	Tensile
Thickness ()	≤16mm	16-40mm	40-60mm	60-100mm	100-150mm	150-200mm
Q235B	235	225	215	215	195	185	370-500

Structural steel refers to steel conforming to a specific strength and formability grade. Formability is expressed in terms of elongation after interruption of tensile test. DIN standard ST37 ms steel and so on structural steel materials are generally used for bearing and other purposes, in which the strength of steel is an important design standard.