X91CrMoV18 Tool Die Steels

X91CrMoV18 - Specification & Application

High alloyed CrMoV steel

Chemical composition(wt.%) of X91CrMoV18 grade:

Elements Min.(≥) Max.(≤) Similar Remarks
C 0.86 0.96
Si - 1.00
Mn - 1.00
P - 0.045
S - 0.030
Cr 17.00 19.00
Mo 0.90 1.30
V 0.07 0.12
Ni - 0.30

X91CrMoV18 - Detail

High alloyed CrMoV steel

Mechanical properties of grade X91CrMoV18

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)
137 (≥) 487 (≥) 31 23 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 241

Physical properties of grade X91CrMoV18

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
231 (≥) 469 (≥) 24 24 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 232
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
841 696 831

Equivalent Grade

Equivalent Products

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