Stellite 21 Tool Die Steels

Stellite 21 - Specification & Application

Stellite alloy

Chemical composition(wt.%) of Stellite 21 grade:

Elements Min.(≥) Max.(≤) Similar Remarks
C 0.20 0.30
Si - 1.00
Mn - 1.00
Cr 25.00 29.00
Ni 1.75 3.75
Mo 5.00 6.00
Co remaining -
W - -
Fe - 3.00
B - 0.007

Stellite 21 - Detail

Stellite alloy

Mechanical properties of grade Stellite 21

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)
764 (≥) 447 (≥) 24 22 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 313

Physical properties of grade Stellite 21

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
362 (≥) 957 (≥) 32 34 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 444
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
986 921 475

Equivalent Grade

Equivalent Products

We can customize the production of Stellite 21 grade, contact us for the best solution.
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