时间：2013-12-16 19:30　作者：admin　点击： 次

45# steel is generally used in mechanical manufacturing. This steel has good mechanical properties, but this is a medium carbon steel, and the quenching performance is not good. However, the amount of 45# steel can be quenched to HRC42~46. If the surface hardness is required, It is also hoped to take advantage of the superior mechanical properties of 45# steel, often carburizing and quenching the surface of 45# steel, so that the required surface hardness can be obtained.
5号钢,是GB中的叫法,JIS中称为:S45C,ASTM中称为1045,080M46,DIN称为:C45。
它的化学成分是：含碳(C)量是0.42~0.50%,Si含量为0.17~0.37%,Mn含量0.50~0.80%,Cr含量≤0.25%,Ni含量≤0.30%， Cu含量≤0.25%。
The density is 7.85g/cm3, the elastic modulus is 210GPa, and the Poisson's ratio is 0.31.