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17 NiCrMoS 6-4

England B.S. 17NiCrMoS6-4 Case hardening steels - Technical delivery conditions and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 17NiCrMoS6-4 / 17 NiCrMoS 6-4
Category Grade Standard Region/Area Standard Content
Metals 17 NiCrMoS 6-4 BS EN 10084 England Case hardening steels - Technical delivery conditions

Chemical composition(mass fraction)(wt.%) of the 17 NiCrMoS 6-4

Element Min Max Similar
Si - 0.4000 -
S 0.0200 0.0400 -
P - 0.0350 -
Ni 1.2000 1.5000 -
Mo 0.1500 0.2500 -
Mn 0.6000 0.9000 -
Cr 0.8000 1.1000 -
C 0.1400 0.2000 -

Mechanical Properties of steel grade 17 NiCrMoS 6-4

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)
467 (≥) 881 (≥) 43 41 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 312

Physical Properties of steel grade 17 NiCrMoS 6-4

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
33 - -     0.21 -  
245 168 - 41.3 144   -  
256 - 42 34.2   233 344

Heat Treatment of steel grade 17 NiCrMoS 6-4

Heat treated : 1679°C - 1955°C

Technological Curves of steel grade 17 NiCrMoS 6-4

Cross Reference Table (Equivalent Grade) of 17 NiCrMoS 6-4

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