Main Ingredients%
  C Carbon
  Cr chromium
  Mn Manganese
  Ni Ni
  Mo Mo
  Si Si
 
0.43
  2.00
  1.50
  1.10
  0.20
  0.30 
 

Factory Status: Pre-hardened to 980-1080N / mm2 (30-34HRC)
Steel Features: This steel P20 plus 1.1% nickel, uniform hardness of the steel surface to the center of the same, cutting good, excellent spark machine and polished performance, suitable for gasification,
Hard chrome plating and titanium.
Uses: Suitable for demanding plastic mold, especially over 400MM thick of the mold.
Annealing: 720-740 ℃ heat through insulation sufficient time, and then furnace cooling to 600 ℃, then cooled in air, the resulting hardness of about 240HB (highest).
Stress Relief: heating to 600 ℃ protective gas furnace kept at about 2 hours, and then slowly cooled in the furnace.
Quenching: 840-860 ℃ after heat quenching oil, or 860-880 ℃ slightly higher than room air-cooled heat instantly after tempering, resulting hardness about 54HRC.
Tempering: Temper immediately after quenching, no less than 2-2.5 hours, then cooled baked.
Dimensions: Round (MM)
25.8 30.8 32.8 40.8 45.8 50.8 55.8 60.8 66.0 71.0 76.0 81.0 86.0 91.0 101.5
106.5 116.5 126.5 141.5 151.5 182.0 202.0 232.0 262.5 282.5 302.5 363.0 403.0
Square (MM)
25323540455060708090105
Flat (MM)
80X20-25-32-35-40-45-50-60-65-70
105X20-25-32-35-40-45-50-60-65-70-80
130X20-25-32-35-40-45-50-60-65-70-80-90-105
155X20-25-32-35-40-45-50-60-65-70-80-90
180X20-25-32-35-40-45-50-60-65-70-80
210X20-25-32-35-40-45-50-60-65-70-80-90-105
230X20-25-32-35-40-45-50-60-65-70-80
260X20-25-32-35-40-45-50-60-65-70-80-90-105
310X20-25-32-35-40-45-50-60-65-70-80-90-105
420X20-25-32-35-40-45-50-60-65-70-80-90-105-115-130-140-155
620X20-25-32-35-40-45-50-60-65-70-80-180-210-230
700X20-25-32-35-40-45-50-60-65-70-80-260-310-360