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Description

International ISO ISO/TR 4956, X21Cr13 Specialsteel Wrought steels for use at elevated temperatures in engines and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: X21Cr13
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel X21Cr13 Bainite ISO International Wrought steels for use at elevated temperatures in engines

Chemical composition(mass fraction)(wt.%) of the X21Cr13

C Si Mn P S Cr Mo Ni
0.09 -0.15 ≤1.00 ≤1.00 ≤0.040 ≤0.030 11.50 -14.00 ≤ ≥ ≤1.00

Mechanical Properties of steel grade X21Cr13

Yield
Rp0.2 (MPa)
Tensile
Rm (MPa)
Impact
KV/Ku (J)
Elongation
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
943 (≥) 677 (≥) 31 34 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 142

Physical Properties of steel grade X21Cr13

Temperature
(°C)
Modulus of elasticity
(GPa)
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)
Specific thermal capacity
(J/kg·°C)
Specific electrical resistivity
(Ω mm²/m)
Density
(kg/dm³)
Poisson’s coefficient, ν
31 - -     0.12 -  
595 558 - 44.3 432   -  
669 - 22 11.2   342 214

Heat Treatment of steel grade X21Cr13

Heat treated : 1284°C - 1991°C

Technological Curves of steel grade X21Cr13

Cross Reference Table (Equivalent Grade) of X21Cr13

Grade Standard Country Application
X21Cr13
X21Cr13
X21Cr13

Relevant standard of X21Cr13

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

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