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  • Name: Cr12 mold steel
  • Code: 031
  • Time: 2011-05-18
  • Views : 999999999
  • Sold amount: 0Piece

Alloy tool steel: Cr12
 
Standard: GB / T 1299-1985
 
● Features and Scope:
 
Is a widely used cold-working die steel, high strength, good hardenability and good wear resistance, but poor impact toughness. Mainly for small to withstand impact loads, requiring high wear of Die and punch, cold cut scissors, drill sleeve, gauge, wire drawing dies, pressure dies, thread rolling plate, draw dies and thread rolling die and so on.
 
● Chemical Composition:
 
Carbon C: 2.00 ~ 2.30
 
Si Si: ≤ 0.40
 
Manganese Mn: ≤ 0.40
 
S S: ≤ 0.030
 
P P: ≤ 0.030
 
Chromium Cr: 11.50 ~ 13.00
 
Ni-Ni: ≤ 0.25 to allow the residual content
 
Copper Cu: ≤ 0.30 to allow the residual content
 
Co Co: ≤ 1.00
 
● Mechanical Properties:
 
Hardness: Annealed, 269 ~ 217HB, indentation diameter 3.7 ~ 4.1mm; quenching, ≥ 60HRC
 
● Heat treatment and microstructure specifications:
 
Heat treatment specifications: 1) quenching, 950 ~ 1000 ℃ oil cooling; 2) quenched 980 ℃, oil-cooling, 180 ℃ tempered 2h.
 
Microstructure: Tempered martensite + retained austenite, undissolved carbides.
 
● Delivery status: Delivery of steel in annealed condition.