How much do you know about Q235 steel
- 来源：骏楠官网
- 作者：骏楠管理员
- 日期： 2017-02-25
Q235 is a carbon structural steel, and the old standard GB700-79 brand A3, C3 steel, is the same as the Russian TOCT brand. Q235 steel for internal defects of harmful impurities, inspection standards more stringent than No. 20 carbon steel. Typically, it does not require direct use of heat treatment.
Chemical composition of Q235
According to the GB700-88 standard, the carbon structural steel Q235 is divided into four grades according to the metallurgical quality of A, B, C, D, and the content of silicon in each grade Q235 steel is 0.3%. A, B carbon content in the range of 0.14%~0.22% and 0.12%~0.20%, respectively, C, D carbon content of less than 0.18% and 0.17%, the highest level of manganese content, the lowest level of sulfur and phosphorus D.
Mechanical properties of Q235
Q235 is a kind of steel material. The Q represents the yield strength of Q235, followed by 235, refers to the yield value of this material, around 235MPa. With the increase of the thickness of the material, the yield value decreases. Because the carbon content is moderate, the comprehensive performance is good, the strength, the plasticity and the welding and so on are well matched. Often rolled into steel, I-beam, channel steel, wire rod, round steel, flat steel, steel frame, Fang Gang steel, steel plate, widely used in architectural and engineering structure.
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