Cr2 Tool Die Steels to GB/T 1229-2000

Cr2 - Specification & Application

  • GB/T 1229-2000 - Alloy tool steel

Measuring tool cutting tool steel

Chemical composition(wt.%) of Cr2 grade: to GB/T 1229-2000

Elements Min.(≥) Max.(≤) Similar Remarks
C 0.95 1.10
Si - 0.40
Mn - 0.40
Cr 1.30 1.65

Cr2 - Detail

Cr2 Measuring tool cutting tool steel

Mechanical properties of grade Cr2 GB/T 1229-2000

Proof strength
Rp0.2 (MPa)
Tensile strength
Rm (MPa)
Impact energy
KV (J)
Elongation at fracture
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
714 (≥) 689 (≥) 23 14 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 312

Physical properties of grade Cr2 GB/T 1229-2000

Property Density
kg/dm3
Temperature T
°C/F
Specific heat
J / kgK
Thermal conductivity
W/mK
Electric resistance
µΩ·cm
Modulus of elasticity
kN/mm2
Expansion rate
724 (≥) 481 (≥) 34 43 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 422
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
885 552 952
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