12CrMo alloy steel

    Chemical composition
  Grade: 12CrMo

    Standard: GB / T 3077-1988

Digital Code: A30122

      Corresponding foreign standards: JIS G4053: 2003

A29M: 2005 ISO 683-18:1996

Corresponding to the Japanese brands: 13CrMo44 (1.7335)

Corresponding to the British brands :1501-620Gr · 27

For French brands: 12CD4
     12crmo Introduction
Features and application: is the thermal strength pearlitic steel, cold-strain plasticity and can be both good machinability, weldability acceptable.

      Parameters for the manufacture of steam pipe leading up to 510 ℃, the wall temperature of 540 ℃ of hot tubes, etc., can also produce a variety of flexible working under high temperature components.
    Chemical composition:

     Carbon C: 0.08 ~ 0.15

     Si Si: 0.17 ~ 0.37

   Manganese Mn: 0.40 ~ 0.70

Sulfur S: promised to the residual content of ≤ 0.035

Phosphorus P: agreed residual content of ≤ 0.035

Chromium Cr: 0.40 ~ 0.70

Ni: to promise the residual content of ≤ 0.030

Copper Cu: agreed residual content ≤ 0.030

  Mo Mo: 0.40 ~ 0.55
    Mechanical properties
Mechanical properties:

   Tensile strength σb (MPa): ≥ 410 (42)

Yield strength σs (MPa): ≥ 265 (27)

Elongation δ5 (%): ≥ 24

Reduction of area ψ (%): ≥ 60

   Impact energy Akv (J): ≥ 110

Impact toughness αkv (J/cm2): ≥ 137 (14)

Hardness: ≤ 179HB

Sample size: sample blank size of 30mm