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K9

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K8 K12
#K9

Description

China GBT K9 conventional cast superalloy and K9 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Special Alloy: K9
Category Type Steel Grade Standard Country Application
Steel GradesSpecial Alloy K9 GBT China conventional cast superalloy
K409
K412
K417
K417G
K417L
K418
K418B
K419
K419H
K8

Chemical composition(mass fraction)(wt.%) of the K9

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％) Mo(％) W(%) Co(%) B(%) Nb(%) Al(%) Ti(%) Ta(%) Fe(%)
0.08-0.13 0.25 0.20 0.015 0.015000000000000000 7.50-8.50 Bal 5.75-6.25 ≤0.10 9.50-10.50 0.010-0.020 ≤0.10 5.75-6.25 0.80-1.20 4.00-4.50 ≤0.35

Mechanical Properties of steel grade K9

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)
487 (≥) 392 (≥) 32 42 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 414

Physical Properties of steel grade K9

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 - -     0.13 -  
629 112 - 43.3 342   -  
123 - 12 23.2   214 344

Heat Treatment of steel grade K9

Heat treated : 1729°C - 1931°C

Technological Curves of steel grade K9

Cross Reference Table (Equivalent Grade) of K9

Grade Standard Country Application
SK95 JIS Japan Carbon tool steel
SK90 JIS Japan Carbon tool steel
XK9258S AS Australia Australia Structural steel
XK9261S AS Australia Australia Structural steel
K409 GBT China conventional cast superalloy
K9 GBT China conventional cast superalloy
K91 GBT China conventional cast superalloy
K8 K12
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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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