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K77

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K461 K80
#K77

Description

China GBT K77 conventional cast superalloy and K77 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Special Alloy: K77
Category Type Steel Grade Standard Country Application
Steel GradesSpecial Alloy K77 GBT China conventional cast superalloy
K4801
K491
K23
K23A
K24
K430
K38
K38G
K41
K461

Chemical composition(mass fraction)(wt.%) of the K77

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％) Mo(％) Co(%) B(%) Al(%) Ti(%) Fe(%)
0.05-0-09 0.50 0.20 0.015 0.010000000000000000 14.00-15.25 Bal 3.90-4.50 14.00-16.00 0.012-0.020 4.00-4.60 3.00-3.70 1.00

Mechanical Properties of steel grade K77

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)
292 (≥) 511 (≥) 33 23 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 332

Physical Properties of steel grade K77

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
24 - -     0.22 -  
313 743 - 32.3 232   -  
577 - 21 43.2   313 133

Heat Treatment of steel grade K77

Heat treated : 1662°C - 1427°C

Technological Curves of steel grade K77

Cross Reference Table (Equivalent Grade) of K77

Grade Standard Country Application
K77 GBT China conventional cast superalloy
K461 K80
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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