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China HB K418B 航空发动机用等轴晶铸造高温合金锭规范 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: K418B / K418B
Category Grade Standard Region/Area Standard Content
Metals K418B HB 7763 China 航空发动机用等轴晶铸造高温合金锭规范

Chemical composition(mass fraction)(wt.%) of the K418B

Element Min Max Similar
Cu - 0.5000 -
Pb - 0.0010 -
Bi - 0.0002 -
Ag - 0.0005 -
S - 0.0150 -
P - 0.0150 -
Si - 0.5000 -
Mn - 0.2500 -
Zr 0.0500 0.1500 -
B 0.0050 0.0150 -
Nb 1.5000 2.5000 -
Fe - 0.5000 -
Ti 0.4000 1.0000 -
Al 5.5000 6.5000 -
Mo 3.8000 5.2000 -
Co - 1.0000 -
Ni - - -
Cr 11.0000 13.0000 -
C 0.0300 0.0700 -

Mechanical Properties of steel grade K418B

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)
157 (≥) 296 (≥) 22 12 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 432

Physical Properties of steel grade K418B

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
43 - -     0.14 -  
896 552 - 23.3 311   -  
322 - 14 42.2   431 144

Heat Treatment of steel grade K418B

Heat treated : 1882°C - 1557°C

Technological Curves of steel grade K418B

Cross Reference Table (Equivalent Grade) of K418B

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