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5Cr21Mn9Ni4N

Description

China GB GB/T 1221 (1992) , GB/T 12773 (1991) , 5Cr21Mn9Ni4N Specialsteel Heat-resisting steel bars and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: 5Cr21Mn9Ni4N
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel 5Cr21Mn9Ni4N Austenite GB China Heat-resisting steel bars

Chemical composition(mass fraction)(wt.%) of the 5Cr21Mn9Ni4N

C Si Mn P S Ni Cr N
0.48 -0.58 ≤0.35 8.00 -10.00 ≤0.04 ≤0.03 3.25 -4.50 20.00 -22.00 0.35 -0.50

Mechanical Properties of steel grade 5Cr21Mn9Ni4N

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)
446 (≥) 591 (≥) 43 31 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 341

Physical Properties of steel grade 5Cr21Mn9Ni4N

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 -  
238 413 - 13.3 323   -  
739 - 33 13.2   331 221

Heat Treatment of steel grade 5Cr21Mn9Ni4N

Heat treated : 1677°C - 1882°C

Technological Curves of steel grade 5Cr21Mn9Ni4N

Relevant standard of 5Cr21Mn9Ni4N

GB/T 1221 (1992) Heat-resisting steel bars GB-T-1221--(1992)-.pdf
GB/T 12773 (1991) Valve steel bars for internal combustion engines - Technical requirements GB-T-12773--(1991)-.pdf

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