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China HB K4125L 航空用高温合金热处理工艺 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: K4125L / K4125L
Category Grade Standard Region/Area Standard Content
Metals K4125L HB/Z 140 China 航空用高温合金热处理工艺

Chemical composition(mass fraction)(wt.%) of the K4125L

Element Min Max Similar
Pb - 0.0005 -
Bi - 0.0000 -
As - 0.0010 -
Sn - 0.0010 -
Ag - 0.0005 -
Sb - 0.0010 -
S - 0.0100 -
P - 0.0010 -
Si - 0.1500 -
Mn - 0.1500 -
Zr - 0.0500 -
B 0.0050 0.0150 -
Ta 3.3000 4.0000 -
Fe - 0.3000 -
Ti 2.0000 2.8000 -
Al 4.3000 5.3000 -
Mo 1.5000 2.5000 -
W 6.2000 7.8000 -
Co 9.2000 10.8000 -
Ni - - -
Cr 8.2000 9.8000 -
C 0.0600 0.1400 -

Mechanical Properties of steel grade K4125L

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)
679 (≥) 485 (≥) 31 41 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 432

Physical Properties of steel grade K4125L

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
21 - -     0.42 -  
417 791 - 44.3 431   -  
158 - 43 14.2   332 342

Heat Treatment of steel grade K4125L

Heat treated : 1539°C - 1979°C

Technological Curves of steel grade K4125L

Cross Reference Table (Equivalent Grade) of K4125L

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