Hastelloy® X AMS 5754

Hastelloy X is commonly used with jet engines such as afterburner components and tail pipes.  It is also commonly used in the gas turbine and petro-chemical industries.

Common stock sizes: .625” to 2.750” diameters.

Common Specifications:

  • AMS 5754
  • AMS 5536
  • ASTM-B572
  • ASME-B572
  • Pratt & Whitney LCS F-17
  • General Electric S-400 / S-SPEC-35
  • GE B14H74
  • GE B50A436
  • GE B50A463
  • GE B50A249C
  • Rolls Royce Sabre

Industry Trade Names:

  • Alloy X
  • Hastelloy X = Haynes International
  • Inconel HX = Special Metals Corp
  • ATI HX = ATI Specialty Materials
  • Pyromet 680 = Carpenter Technology

Bars shall be suppled in the solution treated condition with a turned or centerless ground finish. 

Hast X shall be solution heat treated by heating within the range 2100 to 2150 °F, holding at the selected temperature within ±25 °F for a time commensurate with cross-sectional thickness but not less than 20 minutes, and cooling at a rate equivalent to an air cool or faster.

Hardness shall not exceed a 241 HB

Stress rupture properties — A tensile specimen, maintained at 1500 °F ± 3 °while a load sufficient to produce an initial axial stress of 15.0 ksi or higher is applied continuously, shall not rupture in less than 24 hours.

Rockwell-Industries-Hastelloy-X-ams-5754-image

Composition

Element Min. Max.
Carbon 0.05 0.15
Manganese -- 1.00
Silicon -- 1.00
Phosphorus -- 0.040
Sulfur -- 0.030
Chromium 20.50 23.00
Nickel 1.65 2.00
Molybdenum 8.00 10.00
Copper -- 0.50
Tungsten 0.20 1.00
Titanium -- 0.15
Aluminum (3.1.1) -- 0.50
Cobalt 0.50 2.50
Boron (3.1.1) -- 0.010
Iron 17.00 20.00