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
