UNS N07783 (Inconel 783)

Short Introduction:
Alloy 783 /Inconel 783 / GH 783 / UNS R30783 is an oxidation resistant low coefficient of thermal expansion (low CTE) superalloy developed for gas turbine applications.The alloy is strengthened by a precipitation-hardening heat treatment made possible by additions of niobium and aluminum. In addition, the aluminum content provides excellent resistance to oxidation at high temperature.

Category:

Description

Alloy 783/ Inconel 783/ UNS R30783/GH 783

Material grades and equivalents Inconel 783 / Alloy 783 / UNS R30783 /GH 783

 

Short Introduction:

  • Alloy 783 /Inconel 783 / GH 783 / UNS R30783 is an oxidation resistant low coefficient of thermal expansion (low CTE) superalloy developed for gas turbine applications.The alloy is strengthened by a precipitation-hardening heat treatment made possible by additions of niobium and aluminum. In addition, the aluminum content provides excellent resistance to oxidation at high temperature.
  • An oxidation resistant low coefficient of thermal expansion (low CTE) superalloy developed for gas turbine applications.
  • The alloy is strengthened by a precipitation-hardening heat treatment made possible by additions of niobium and aluminum. In addition, the aluminum content provides excellent resistance to oxidation at high temperature.
  • The alloy’s density is 5% less than those of super alloys such as INCONEL alloy 718. The combination of low expansion, high strength and excellent resistance to oxidation makes the alloy especially useful for gas turbine and steam turbine components.
  • The low expansion enables closer control of clearances and tolerances for greater power output and fuel efficiency.

 

Alloy 783 Chemical composition:

Alloy % Ni Cr Co Cu Fe Al Si Mn S P
Alloy783 Min. 26 2.5 Rest 24 5.00
Max. 30 3.5 0.05 27 6.00 0.5 0.5 0.005 0.015

 

Alloy 783 Physical properties:

Density 7.7-8.03 g/cm3
Melting point 1338-1380 ℃
Hardess HB335

 

Alloy 783 minimum Mechanical properties in the room temperature:

 Alloy Tensile Strength Rm N/mm2 Yield strengthRP0.2N/mm2 ElongationA5 %
Solution 1158 1034 15

 

Alloy 783 Characteristic as below:

It is a new "W" nickel-cobalt superalloy that keeps the alloy high strength and excellent corrosion resistance while having a low thermal expansion coefficient.

 

Alloy 783 Application field:

Widely used in aviation, aerospace, petroleum, chemical, shipbuilding industry. Nickel-base superalloy occupies a particularly important position in the entire superalloy field, and it is widely used to manufacture the hottest end parts of aviation jet engines and various industrial gas turbines.