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K491

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K4801 K23
#K491

Description

China GBT K491 conventional cast superalloy and K491 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Special Alloy: K491
Category Type Steel Grade Standard Country Application
Steel GradesSpecial Alloy K491 GBT China conventional cast superalloy
K423
K423A
K424
K430
K438
K438G
K441
K461
K477
K4801

Chemical composition(mass fraction)(wt.%) of the K491

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％) Mo(％) Co(%) B(%) Al(%) Ti(%) Mg(%) Fe(%)
0.02 0.10 0.10 0.010 0.010000000000000000 9.50-10.50 Bal 2.75-3.25 9.50-10.50 0.080-0.120 5.25-5.75 5.00-5.50 0.005 0.50

Mechanical Properties of steel grade K491

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)
192 (≥) 948 (≥) 44 34 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 431

Physical Properties of steel grade K491

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 - -     0.34 -  
397 152 - 24.3 243   -  
299 - 22 44.2   433 214

Heat Treatment of steel grade K491

Heat treated : 1355°C - 1474°C

Technological Curves of steel grade K491

Cross Reference Table (Equivalent Grade) of K491

Grade Standard Country Application
K491 GBT China conventional cast superalloy
K4801 K23
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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