X750 Sheet, Coil - AMS 5598, AMS 5542

Coil

Inconel Alloy® X-750 is a nickel-chromium austenitic alloy similar to Alloy 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 high temperatures to 1300°F (700°C). Extended applications that require high strength at temperatures beyond 1100°F (593°C) may require a solution treatment, with air cooling between intermediate and final aging.

 

Inventory Size Ranges for X750

Type Thickness AMS Standards UNS Get a Quote
Coil 0.0250" - 0.0680" AMS 5598, AMS 5542 UNS N07750 Get a Quote
Sheet 0.0250" - 0.0680" AMS 5598, AMS 5542 UNS N07750 Get a Quote
Precision Reroll Strip 0.0008" - 0.015" Get a Quote

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Characteristics of X750

This material has excellent relaxation resistance and is non-magnetic. It has enhanced elevated temperature strength properties to 1300ºF (700°C) and oxidation resistance to 1800ºF (983˚C). Inconel® X-750 is resistant to a wide variety of industrial corrosives under both oxidizing and reducing conditions. This alloy also has excellent resistance to chloride stress corrosion cracking in the fully age hardened condition.

Working with X750

Nickel Alloy X-750 displays excellent workability including machinability and welding. It is precipitation hardenable. 

Other industry standards we comply with:

  • PWA-LCS
  • GE Aircraft Engine (GT193)
  • GE Aviation S-SPEC-35 AeDMS S-400
  • RR SABRe Edition 2
  • DFARS Compliant
  • W.Nr 2.4669

Common Trade Names

  • ATI X-750 (™ Allegheny Technologies)
  • Inconel X750  (® Special Metals)
  • Alloy X 750
  • Inconel® X-750

Industry Applications for X750

  • Gas turbines discs, thrust reversers, wheels and ducts
  • Aircraft structures
  • Rocket engines
  • Nuclear reactors
  • Heat treat fixtures
  • Cryogenic vessels, springs, and fasteners
  • Exhaust valves of diesel engines

Chemical Composition

Chemical Composition Percentage of Alloy X750
Element Min Max
Ni/Co Nickel + Cobalt 70.0
Cr Chromium 14.0 17.0
Fe Iron 5.0 9.0
Ti Titanium 2.25 2.75
Al Aluminum 0.4 1.0
No/Ta Nobelium & Tantalum 0.7 1.2
Si Silicon 0.50
S Sulfur 0.01
Cu Copper 0.50
C Carbon 0.08
Co Cobalt 1.00

Physical Properties

Physical Properties of X750
PropertyValue
Density, lb/in³0.299
Melting Range2540-2600°F, 1395-1425°C
Curie Temperature

-225°F as hot-rolled

-193 triple-heat-treated (2100°F/2 hr, A.C., +1500°F/24 hr, A.C. + 1300°F/20 hr, A.C.)

Magnetic Permeability

70°F, 200H, as hot rolled 1.0020

1.0035 triple-heat-treated (2100°F/2 hr, A.C., +1500°F/24 hr, A.C., +1300°F/20 hr, A.C.)

Emissivity Oxidized Surface600°F  0.895, 2000°F  0.925
Linear Contraction During Precipitation Treatment1300°F/20 hr), in/in  Hot-rolled 0.00044, 20% Cold-rolled 0.00052, Annealed 0.00026

Mechanical Properties

Minimum Specified Properties
PropertyValue

Ultimate Tensile Strength, ksi

120

.02% Yield Strength, ksi

60

Elongation, %

30

Heat Treatment
SpecificationValue

AMS 5541

1300°F/20 hr., AC (Constant-temperature precipitation treatment).

AMS 5598

1350°F/8 hr., FC to 1150°F, Hold at 1150°F for total precipitation-treating time of 18 hr., AC (Furnace-cool precipitation treatment).

Datasheet

x750-datasheet.pdf (264.62 KB)

Additional Info