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X 70 CrMnNiN 21 6

Italy UNI X70CrMnNiN216 Hot rolled finished special alloyed steel products. Round bars for internal combustion engine valves and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: X70CrMnNiN216 / X 70 CrMnNiN 21 6
Category Grade Standard Region/Area Standard Content
Metals X 70 CrMnNiN 21 6 UNI 3992 Italy Hot rolled finished special alloyed steel products. Round bars for internal combustion engine valves

Chemical composition(mass fraction)(wt.%) of the X 70 CrMnNiN 21 6

Element Min Max Similar

Mechanical Properties of steel grade X 70 CrMnNiN 21 6

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)
428 (≥) 335 (≥) 24 14 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 144

Physical Properties of steel grade X 70 CrMnNiN 21 6

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
12 - -     0.43 -  
191 762 - 31.3 212   -  
153 - 13 21.2   441 444

Heat Treatment of steel grade X 70 CrMnNiN 21 6

Heat treated : 1742°C - 1629°C

Technological Curves of steel grade X 70 CrMnNiN 21 6

Cross Reference Table (Equivalent Grade) of X 70 CrMnNiN 21 6

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