AISI O2 Steel Round Bar Sheet Plate, DIN 1.2842, JIS SKS31

AISI O2 steel also can be called JIS SKS31 and DIN 1.2842 steel. It is the better type compare with the O1 tool steel. Its content of carbon, chromium and tungsten has been raised. So it has a higher hardenability characteristic, the deformation is small during the quenching. It is a low alloy tool steel which is better than carbon steel at the point of the mechanical property. It has high hardness and wearing resistance. Because of the certain account of vanadium element, the crystal grain is smaller then decrease the overheating sensitivity of the steel. At the meantime, the carbide is getting smaller and the distribution is uniformity.

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O2 Steel Grade Equivalent Chart

Country China USA Germany/UK/France ISO
Standard GB/T 1299-2000 ASTM A681-08  EN ISO 4957-1999 ISO 4957: 1999
Grades 9Mn2V
O2 90MnCrV8/1.2842 90MnCrV8

Certificate & SGS Report

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