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HNi55-7-4-2

China YS HNi55-7-4-2 同步器齿环用挤制铜合金管 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: HNi55-7-4-2 / HNi55-7-4-2
Category Grade Standard Region/Area Standard Content
Metals HNi55-7-4-2 YS/T 669 China 同步器齿环用挤制铜合金管

Chemical composition(mass fraction)(wt.%) of the HNi55-7-4-2

Element Min Max Similar
Others total - 0.2000 -
Zn - - -
Ni 6.0000 7.5000 -
Fe 0.5000 1.0000 -
Si 2.0000 2.5000 -
Al 3.0000 4.5000 -
Cu 54.0000 56.0000 -

Mechanical Properties of steel grade HNi55-7-4-2

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)
144 (≥) 872 (≥) 34 22 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 422

Physical Properties of steel grade HNi55-7-4-2

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
13 - -     0.44 -  
916 135 - 12.3 223   -  
245 - 32 34.2   343 311

Heat Treatment of steel grade HNi55-7-4-2

Heat treated : 1237°C - 1571°C

Technological Curves of steel grade HNi55-7-4-2

Cross Reference Table (Equivalent Grade) of HNi55-7-4-2

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