Standard: GB / T 1220-1992
● Features and application:
Y3Cr13 to improve 3Cr13 cutting of steel.

     ● Chemical Composition:
  Carbon C: 0.26 ~ 0.40
  Si Si: ≤ 1.00
  Manganese Mn: ≤ 1.25
  Sulfur S: ≤ 0.15
  Phosphorus P: ≤ 0.060
  Chromium Cr: 12.00 ~ 14.00
  Ni: to allow containing ≤ 0.60
  Mo Mo: can be added to ≤ 0.60

● Mechanical Properties:
  Tensile strength σb (MPa): quenching and tempering, ≥ 735
  Conditions yield strength σ0.2 (MPa): quenching and tempering, ≥ 540
  Elongation δ5 (%): quenching and tempering, ≥ 12
  Reduction of area ψ (%): quenching and tempering, ≥ 40
  Impact energy Akv (J): quenching and tempering, ≥ 24
  Hardness: Annealed, ≤ 235HB; quenching and tempering, ≥ 217HB
      ● Heat treatment and microstructure specifications:
  Heat treatment specifications: 1) annealing, 800 ~ 900 ℃ slow cooling or rapid cooling of about 750 ℃​​; 2) quenching, 920 ~ 980 ℃ oil cooling; 3) temper, 600 ~ 750 ℃ ​​fast-cooling.
  Microstructure: Organizing for the martensitic type.
  ● Delivery status: normal to heat treatment delivery, the treatment types specified in the contract; not indicated, according to the heat treatment state of delivery.