Project Description

Inconel X-750 (UNS N07750)

Inconel X-750 (UNS N07750) is a nickel-chromium alloy similar to Inconel 600 but made precipitation hardenable by additions of aluminum and titanium. It has good resistance to corrosion and oxidation along with high tensile and creep-rupture properties at temperatures to 1300˚C. Its excellent relaxation resistance is useful for high-temperature springs and bolts. Used in gas turbines, rocket engines, nuclear reactors, pressure vessels, tooling, and aircraft structures.

Equivalent Grades

TrademarksGBJISKSASTMUNSDINW.NrGOSTBSNF
Inconel X-750GH4145NCF 750NCF 800Inconel X-750N07750XCr15Fe7TiAl2.4669ЭИ974XCr15Fe7TiAlXCr15Fe7TiAl

Product Forms

Pipe, Tube, Sheet, Strip, Plate, Round Bar, Flat Bar, Forgings, Hexagon, Wire

Chemical Composition,%

CPSMnSiCrNiCoNbAlTiCuFe
≤0.08≤0.015≤0.010≤1.00≤0.5014.0~17.0≥70.0≤1.00.7~1.20.4~1.02.25~3.75≤0.505.0~9.0

Typical Physical & Mechanical Property(Solution Annealed)

Density, g/cm3Melting Point, ℃Tensile Strength, MPaYield Strength, MPaElongation,%
8.281390-143085542740

Specifications

Rod, Bar, Wire, ForgingsASTM B637/ASME SB637, ISO 9723/9724/9725, EN 10269, BS HR505(Wire), SAE AMS 5698/5699(Wire)
Plate, Sheet, StripISO 6208, SAE AMS 5542/5598
OthersASTM B366/ASME SB366(Fittings)

Features

  • High strength at temperatures to 1500oF (816℃) after suitable heat treatment
  • Creep-rupture strength at high temperatures to about 700℃(1290oF)
  • High tensile and creep-rupture properties
  • Resistance to a wide variety of industrial corrosives under both oxidizing and reducing conditions
  • Excellent workability including machinability and welding
  • Resistance to chloride ion stress-corrosion cracking
  • Precipitation hardenable

Applications

  • Gas turbines
  • Jet engine parts
  • Nuclear power plant applications
  • Heat-treating fixtures
  • Forming tools and extrusion dies
  • Pressure vessels
  • Aircraft structures