Cr12 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of Cr12

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GB Cr12

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This page is mainly introduced the Cr12 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of Cr12,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Wide application of cold working die steel with high strength, hardenability and abrasion resistance, quenching deformation;But the impact toughness is poorer, brittle crack, easy to form the uneven eutectic carbides, poor thermal conductivity and high temperature plastic also
  • Steel Garde:Cr12
  • Type:Tool Steels & Die Steels
  • Country:China
  • Standard:GB
  • Standard Number:
    ITEM Standard Number Descriptions
    1 GB/T 1229-2000 Round bar, Wire,
  • Application:Often used in the manufacture of small bear impact load and wear resistance of high cold cold punching die, punch, shear knife, cold roll, drill sets and wire drawing die, as well as the gauge, model, the CAM pin, eccentric wheel, etc

Chemical composition(mass fraction)(wt.%)

Elements Min.(≥) Max.(≤)
C 2.00  2.30
Si   0.40
Mn   0.40
Cr 11.50  13.00

Mechanical Properties

Tensile strength 350~507 σb/MPa
Yield Strength 617 σ 0.2 ≥/MPa
Elongation 38 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 109~674 -
HRC 30 -

Physical Properties

Thermal expansion 10-57 e-6/K
Thermal conductivity 89-19 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 7412-3349 째C
Density 8129-8416 kg/m3
Resistivity 0.50-0.60 Ohm.mm2/m
     

Heat Treatment Regime

Annealing

Quenching

Tempering

Normalizing

Q & T

Size Availability

Steel Grade Specification Processing range(mm)
Cr12 Tool Steels & Die Steels Round Bar and Hollow Bar Φ1 to Φ2000
Square and Flat Steel Φ10 to Φ100
Plate and Sheet 0.08-800(Thickness)*10-1500(Width)*Length
Tube or Pipe OD:Φ4-410; WT:1-35 mm; Lenght:10-12000
Coil and Strip Steel THK:0.1mm Width:1500mm
Forged Ring/Cylindrical/Disk

Technical specification/standard for download

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