Chemical Composition of Hastelloy X
Element	Percentage
Carbon	0.05 - 0.15
Manganese	1.00 max
Phosphorus	0.040 max
Sulfur	0.030 max
Silicon	1.00 max
Chromium	20.50 - 23.00
Nickel	Balance
Molybdenum	8.00 - 10.00
Iron	17.00 - 20.00
Titanium	0.15 max
Aluminum	0.50 max
Cobalt	0.50 - 2.50
Boron	0.01 max
Copper	0.50 max
Tungsten	020 - 1.00 max

 

Resistance to Corrosion and Oxidation of Hastelloy X

Hastelloy X has good resistance to oxidizing, reducing and neutral atmospheres encountered in furnace and jet engine operations up to 2200°F (1204°C). The alloy develops a protective, tenacious oxide film which does not spall off and, therefore, retains oxidation resistance at high temperatures.

 

Physical Properties of Hastelloy X

• Density: 0.297 lb/in3 (8.22 g/cm3)
• Specific Gravity: 8.22
• Melting Range: 2300 - 2470°F (1260 - 1355°C)
• Magnetic Permeability: < 1.002

 

Thermal Conductivity of Hastelloy X
The thermal conductivity at various temperatures for Hastelloy X are given in the following table.
Temperature Range		Co-Efficients
°C	°F	W/m.K	Btu.ft/ft2.hr.°F
21	70	9.1	5.23
93	200	11.0	6.33
260	500	14.1	8.17
593	1100	20.8	12.0
704	1300	22.9	13.2
816	1500	25.0	14.5
927	1700	27.2	15.7

 

Electrical Resistivity of Hastelloy X
Temperature Range		micro ohm-cm
°C	°F
21	70	115.8
200	392	120
400	752	123
500	1112	127
800	1472	128
1000	1832	129

 

Mechanical Properties of Hastelloy X
Condition	Solution Annealed
Tensile Strength ( Mpa )	784
0.2% Yield Strength ( Mpa )	343
Elongation ( % )	45
Hardness ( HB )	184

 

Applications of Hastelloy X

• Gas turbine operations
• Petrochemical
• Structural components
• Industrial furnace