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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.

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