125CrSi5 Tool Die Steels

125CrSi5 - Specification & Application

Alloyed SiCr steel

Chemical composition(wt.%) of 125CrSi5 grade:

Elements Min.(≥) Max.(≤) Similar Remarks
C 1.20 1.30
Si 1.05 1.25
Mn 0.60 0.80
P - 0.035
S - 0.035
Cr 1.10 1.30
Mo - -
V - -

125CrSi5 - Detail

Alloyed SiCr steel

Mechanical properties of grade 125CrSi5

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)
278 (≥) 487 (≥) 32 24 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 222

Physical properties of grade 125CrSi5

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
397 (≥) 187 (≥) 12 44 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 442
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
376 242 856

Equivalent Grade

Equivalent Products

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