Specification
1.High carton high chromium tool steel.
2.High wear resistance and toughness.
3.Offers a measure of corrosion resistar when polished.
4.Alternative to oil hardening tool steel.

Chemical composition
NAME C Si Mn P S Cr V
1.2842/O2 0.85~0.95 ,0.40 1.70~2.00 ,0.030 ,0.030 ---- 0.10~0.25

Similar grade
GB AISI/ASTM DIN JIS
9Mn2V O2 1.2842 SKS31

PropertiesConditions
T (°C)Treatment
Density7.66 x 1000 kg/m325-
Mechanical Properties
The mechanical properties of O2 steels are tabulated below.
Physical Properties
Properties T (°C)Treatment
Density 7.66 x 1000 kg/m3 25

Mechanical Properties
Properties T (°C)Treatment
Poisson's ratio 0.27-0.30 25-
Elastic modulus 27557-30458 ksi 25

Thermal Properties
Properties T (°C) Treatment
Thermal expansion 11.2 x 10-6/ºC 20-100