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Hastelloy X

Hastelloy X, also known as “Alloy X”, is designated as UNS N06002 or W.Nr 2.4665. It is a nickel-chromium-iron-molybdenum alloy that possesses an exceptional combination of oxidation resistance, fabricability, and high-temperature strength. Hastelloy X has also been found to be exceptionally resistant to stress-corrosion cracking in petrochemical applications and resistant to carburization and nitriding. This Alloy X exhibits good ductility after prolonged exposure at temperatures of 650°C[1200°F], 760[1400°F] and 870°C[1600°F] for a period of 16000 hours. Hastelloy X are widely used in gas turbines, petrochemical and nuclear industries, furnaces, pressure equipment, and aircraft components.

Hastelloy X (UNS N06002) materials: seamless pipes, ring flanges and fittings.

Hastelloy X (UNS N06002) materials: seamless pipes, ring flanges and fittings.

1. Chemical Composition Requirements of Hastelloy X

The Chemical Composition of Hastelloy X, %
Nibalance
Cr20.5-23.0
Fe17.0-20.0
Mo8.0-10.0
Co0.5-2.5
W0.20-1.00
C0.05-0.15
Mn≤1.00
Si≤1.00
P≤0.040
S≤0.030

2. Typical Physical Properties

DensityMelting RangeSpecific HeatThermal ConductivityElectrical Resistivity
g/cm3°CJ/kg.kW/m.kµΩ·m
8.221260-13554869.11180

3. Product Forms and Standards

Product FormStandard
RodASTM B572
Plate, sheet and stripASTM B435, B906
Seamless pipe and tubeASTM B622
Welded pipeASTM B619, B775
Welded tubeASTM B626, B751
Welding fittingASTM B366
Billet and bar for reforgingASTM B472
*The mechanical properties of Hastelloy X materials vary according to different forms and heat treatment conditions.

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