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K40M

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K40 K188
#K40M

Description

China GBT K40M conventional cast superalloy and K40M Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Special Alloy: K40M
Category Type Steel Grade Standard Country Application
Steel GradesSpecial Alloy K40M GBT China conventional cast superalloy
K610
K612
K640
K640M
K6188
K825
K605
K10
K612
K40

Chemical composition(mass fraction)(wt.%) of the K40M

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％) Mo(％) W(%) Co(%) B(%) Al(%) Ti(%) Ta(%) Fe(%)
0.45-0.55 ≤1.00 ≤1.00 0.040 0.040 24.50-26.50 9.50-11.50 0.10-0.50 7.00-8.00 Bal 0.008-0.040 0.70-1.20 0.05-0.30 0.10-0.50 ≤2.00

Mechanical Properties of steel grade K40M

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)
917 (≥) 228 (≥) 44 44 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 442

Physical Properties of steel grade K40M

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
42 - -     0.32 -  
128 495 - 14.3 343   -  
792 - 31 34.2   312 124

Heat Treatment of steel grade K40M

Heat treated : 1293°C - 1894°C

Technological Curves of steel grade K40M

Cross Reference Table (Equivalent Grade) of K40M

Grade Standard Country Application
K40M GBT China conventional cast superalloy
K40 K188
Available Suppliers
Jiangyou Longhai Special Steel Co.,Ltd.
Jiangyou Longhai Special Steel Co.,Ltd.

Our main peoducts of steel are many kinds of special steel, like tool steel, mould steel, alloy steel, alloy constructural steel, heat-resistant steel, high speed tool steel,spring steel and bearing steel , stainless steel and so on, which have formed 12 series and more than 350 varieties with n...

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