Hastelloy® X is a high temperature and corrosion resistant nickel-based solid solution strengthened alloy. This alloy has outstanding resistance to oxidation and possesses exceptional strength at elevated temperatures. Molybdenum enables this alloy to be hard, strong, and suitable for welding applications. Alloy X exhibits good formability and machinability.
Alloy X is non-magnetic. It has high strength up to 1500ºF (816ºC) and good oxidation resistance up to 2200ºF (1204ºC). This alloy is especially resistant to carburization and nitriding, conditions which cause failure in some high temperature alloys. It is used extensively in high temperature jet engine and chemical processing applications and is highly resistant to stress corrosion cracking in petrochemical applications. Industrial furnace applications incorporate Alloy X for its resistance to oxidizing and its ability to maintain good ductility after prolonged exposure to extremely high temperatures.
Chemistry
Chemical Requirements
Ni
Cr
Mo
Mn
C
Si
Fe
Max
Bal
23.0
10.0
1.00
0.15
1.00
20.0
Min
20.5
8.00
0.05
17.0
Tensile Data
Mechanical Property Requirements
Ultimate Tensile
Yield Strength (0.2% OS)
Elong.
R/A
Hardness
Min
95 KSi
35 KSi
35
Max
Min
655 MPa
240 MPa
Max
Specifications
Form
Standard
Metal Type
UNS N06002
Bar
ASTM B572 AMS 5754
Wire
AMS 5798W AMS 5798C
Sheet
ASTM B435 AMS 5536
Plate
ASTM B435 AMS 5536
Tube
AMS 5587 AMS 5588 ASTM B619 ASTM B622
Pipe
AMS 5587 AMS 5588 ASTM B619 ASTM B622
Fitting
ASTM B366
Forging
AMS 5754 GE B50TF31
Weld Wire
A5.14 ERNiCrMo-2
Weld Electrode
A5.11 ENiCrMo-2
Din
2.4665
Heat-Treatment Wrought forms of HASTELLOY® X alloy are furnished in the solution heat-treated condition unless otherwise specified. X alloy is typically solution heat-treated at 2150°F (1177°C) and rapid cooled. Bright annealed products are cooled in hydrogen. Annealing at temperatures lower than the solution heat- treating may cause precipitation of secondary phases, which may affect the alloy’s strength and ductility. Useful for Aircraft, Furnace and Chemical Process Components X alloy has wide use in gas turbine engines for combustion zone components such as transition ducts, combustor cans, spray bars and flame holders as well as in afterburners, tailpipes and cabin heaters. It is recommended for use in industrial furnace applications because it has unusual resistant to oxidizing, reducing and neutral atmospheres. Furnace rolls of this alloy were still in good condition after operating for 8,700 hours at 2150°F (1177°C).