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K40

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K612 K40M
#K40

Description

China GBT K40 conventional cast superalloy and K40 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

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

Chemical composition(mass fraction)(wt.%) of the K40

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％) W(%) Co(%) Fe(%)
0.45-0.55 ≤1(00 ≤1.00 0.040 0.040 24.50-26.50 9.50-11.50 7.00-8.00 Bal ≤2.00

Mechanical Properties of steel grade K40

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)
671 (≥) 662 (≥) 33 43 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 432

Physical Properties of steel grade K40

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
12 - -     0.41 -  
915 234 - 44.3 234   -  
262 - 31 33.2   141 234

Heat Treatment of steel grade K40

Heat treated : 1264°C - 1376°C

Technological Curves of steel grade K40

Cross Reference Table (Equivalent Grade) of K40

Grade Standard Country Application
ASTM HK40 AISI USA
St02FK40 ONORM Austria Austrian structural steel
K401 GBT China Age hardening type Nickel base alloy
K403 GBT China Age hardening type Nickel base alloy
K405 GBT China Age hardening type Nickel base alloy
K406 GBT China Age hardening type Nickel base alloy
K409 GBT China Age hardening type Nickel base alloy
K4002 GBT China Age hardening type Nickel base alloy
K4002 GBT China conventional cast superalloy
K40 GBT China conventional cast superalloy
K40M GBT China conventional cast superalloy
HK40 ASTM USA Steel Castings, Iron-Chromium and Iron-Chromium-Nickel,Heat Resistant, for General Application
HK40 ASTM USA Steel Castings, Iron-Chromium and Iron-Chromium-Nickel,Heat Resistant, for General Application
K612 K40M
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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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