X21Cr13 Stainless Steels to ISO/TR 4956

X21Cr13 - Specification & Application

  • ISO/TR 4956 - Wrought steels for use at elevated temperatures in engines

Wrought steels for use at elevated temperatures in engines

Chemical composition(wt.%) of X21Cr13 grade: to ISO/TR 4956

Elements Min.(≥) Max.(≤) Similar Remarks
C 0.09 0.15
Si - 1.00
Mn - 1.00
P - 0.040
S - 0.030
Cr 11.50 14.00
Mo - -
Ni - 1.00

X21Cr13 - Detail

Wrought steels for use at elevated temperatures in engines

Mechanical properties of grade X21Cr13 ISO/TR 4956

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)
363 (≥) 397 (≥) 21 43 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 424

Physical properties of grade X21Cr13 ISO/TR 4956

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
738 (≥) 777 (≥) 42 12 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 331
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
951 361 534

Equivalent Products

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