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Super alloy

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Super alloy

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A superalloy, or high-performance alloy, is an alloy with the ability to operate at a high fraction of its melting point.[1] Several key characteristics of a superalloy are excellent mechanical strength, resistance to thermal creep deformation, good surface stability, and resistance to corrosion or oxidation.

The crystal structure is typically face-centered cubic (FCC) austenitic. Examples of such alloys are Hastelloy, Inconel, Waspaloy, Rene alloys, Incoloy, MP98T, TMS alloys, and CMSX single crystal alloys.


Nickel-based superalloys are used in load-bearing structures to the highest homologous temperature of any common alloy system (Tm = 0.9, or 90% of their melting point). Among the most demanding applications for a structural material are those in the hot sections of turbine engines. The preeminence of superalloys is reflected in the fact that they currently comprise over 50% of the weight of advanced aircraft engines. The widespread use of superalloys in turbine engines coupled with the fact that the thermodynamic efficiency of turbine engines is increased with increasing turbine inlet temperatures has, in part, provided the motivation for increasing the maximum-use temperature of superalloys. In fact, during the past 30 years turbine airfoil temperature capability has increased on average by about 4 °F (2.2 °C) per year. Two major factors which have made this increase possible are

 Advanced processing techniques, which improved alloy cleanliness (thus improving reliability) and/or enabled the production of tailored microstructures such as directionally solidified or single-crystal material.

 Alloy development resulting in higher-use-temperature materials primarily through the additions of refractory elements such as Re, W, Ta, and Mo.


Chinese GradeInternation Grade
GH2901901 mejupụtara
GH2907Nkọwa 907
GH3030Omere 75
GH3044        Haynes 230
GH3600        Nkọwa 600
GH3625        Nkọwa 625
GH4080A        Nimonic 80A
GH4090Omere 90
GH4145Inconel X-750
GH4169Nkọwa 718

itemAkụkụ (mm)usoroỌnọdụ nnyefe
Ogwe okirikiriDIA1.0 - 30Oyi-ese / enweghị ebe egweriNa-egbuke egbuke & Anneal
DIA20 - 80ekpepụsịNa-egbuke egbuke & Anneal
DIA 13-180Agbanyela ỌkụBlack elu & Mgbakwunye
DIA 70-400Agbanyela ỌkụBlack elu & Mgbakwunye
Ewepụghị OgweT 3.0-20 XW 20-100Agbanyela ỌkụBlack elu & Mgbakwunye
GbochieT 20-200 X 300-800Hot Rolled & Hot ForgedBlack elu / Igwe & Anneal
Waya RodDIA 5.5-13Agbanyela ỌkụBlack elu & Mgbakwunye
AkwụkwọT1.0-2.5Oyi EmereBlack elu & Mgbakwunye
T 2.5 - 8.0Agbanyela ỌkụBlack elu & Mgbakwunye

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