Features and Scope:

Compared with 30 # steel, strength and hardenability are high, this steel is usually used in the quenched state, can also be used after normalizing. A great impact for the wear and load of the important parts, such as axes, small shaft, balanced lever, rocker, rod, bolts, nuts, gear and all kinds of roller, etc.; also be used as required by the surface quenched parts.

Chemical Composition: Carbon C: 0.27 ~ 0.34 ,Si Si: 0.17 ~ 0.37 ,Manganese Mn: 0.50 ~ 0.80 ,S S: to allow the residual content ≤ 0.035 ,P P: ≤ 0.035 to allow the residual content ,Chromium Cr: 0.80 ~ 1.10
,Ni-Ni: ≤ 0.030 to allow the residual content ,Copper Cu: ≤ 0.030 to allow the residual content