Standard:
China GB/T18254-2002
Japan JIS G4805: 1991
U.S. ASTM A295: 1998
International ISO 683-17:1999
Application:
SUJ1 bearing steel with a high and uniform hardness, good wear resistance. To bear the load for the production of large pieces of small cross-section conditioning large normalizing and stress smaller parts.
SUJ1 bearing steel in addition to higher purity materials, the need to go through heat treatment to which carbide refinement and distribution in the base to increase its wear resistance. Generally heated to 780 ~ 850 ℃, and then quenching in oil, in the back fire at 140 ~ 160 ℃, the hardness values ​​after heat treatment of about HRC 62 or more.
Chemical Composition (%):
C :0.95-1 .10
Mn: ≤ 0.50
P: ≤ 0.025
S: ≤ 0.025
Cr :0.90-1 .20
Si :0.15-0 .35