UNS N07750 (Inconel X-750)

Short Introduction:

Inconel X-750 / GB GH4145 / UNS N07750/W.Nr.2.4669 NiCr15Fe7TiAl / AFNOR NC15FeT is a precipitation-hard enable alloy which has been used in applications such as high temperature structural members for gas turbines, jet engine parts, nuclear power plant applications, heat-treating fixtures, forming tools, and extrusion dies. The alloy is highly resistant to chemical corrosion and oxidation and has high stress-rupture strength and low creep rates under high stresses at temperatures up to 1500°F (816°C) after suitable heat treatment.

Category:

Description

UNS N07750/GH4145/ Inconel X-750

Material grades and equivalents

GH4145 / GB GH4145 / UNS N07750/W.Nr.2.4669 NiCr15Fe7TiAl / AFNOR NC15FeT

Inconel X750 Chemical composition:

Alloy % Ni Cr Fe Nb Co C Mn Si S Cu Al Ti
Inconel X750 Min. 14 5 0.7 0.4 2.25
Max. 70 17 9 1.2 1 0.08 1 0.5 0.01 0.5 1 2.75

Inconel X750 Physical properties:

Density 8.28 g/cm3
Melting range 1393-1427℃

Inconel X750 Alloy     minimum Mechanical properties in the room temperature:

 Alloy Tensile strength Rm N/mm2 Yield strength RP0.2N/mm2  ElongationA5 % Brinell hardness HB
Solution treatment 1267 868 25 ≤400

 

Inconel X750 Characteristic as below:

Inconel X750  is a precipitation-hard-enable alloy which has been used in applications such as high temperature structural members for gas turbines, jet engine parts, nuclear power plant applications, heat-treating fixtures, forming tools, and extrusion dies. The alloy is highly resistant to chemical corrosion and oxidation and has high stress-rupture strength and low creep rates under high stresses at temperatures up to 1500°F (816°C) after suitable heat treatment.

 

Inconel X750 Machinability:

  • Conventional machining techniques used for iron based alloys may be used. This alloy does
  • work-harden during machining and has higher strength and “gumminess” not typical of steels. Heavy duty machining equipment and tooling should be used to minimize chatter or work-hardening of thealloy ahead of the cutting.

 

Inconel X750 Corrosion resistance:

  • Inconel X750  has excellent resistance to chloride ion stress-corrosion cracking. It exhibits satisfactory resistance to numerous oxidizing environments. The alloy has similar corrosion resistance to alloy 600 in many media.

 

Inconel X750 Application range and field:

  • Nuclear reactors
  • Gas turbines Rocket engines Pressure vessels Aircraft structures

 

Specifications:

Plate AMS 5542/ASM 5598/Mil-N-7786
Forgings AMS 5667/AMS 5668/AMS 5669/AMS 5670/AMS 5747/AMS

B-637