Alloy Information Report for Hastelloy S™

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General Characteristics of Hastelloy S™

Hastelloy S™ is a high-heat, nickel-based alloy that exhibits exceptional thermal stability and high-heat mechanical properties while resisting oxidation up to 2000°F (1093°C). With simple heat treatment, Hastelloy S™ will exhibit high-heat and thermal fatigue strength. It maintains its ductility and strength after aging at 1600°F (871°C) for long periods under stress, and can be hot and cold worked readily.

Chemical Composition of Hastelloy S™

• Carbon 0.02 max
• Chromium 15.50
• Molybdenum 14.50
• Iron 1.0
• Manganese 0.50
• Silicon 0.40
• Aluminum 0.20
• Lanthanum 0.02
• Boron 0.009
• Nickel remainder

Heat Treatment of Hastelloy S™

• 1950° F (1066°C)
• Air cool

Applications of Hastelloy S™

• High-temperature parts that:
  • Need to withstand severe cyclic heating
  • Demand a low coefficient of thermal expansion
  • Need to maintain annealed mechanical properties and dimensional stability

Machinability of Hastelloy S™

• Conventional methods
• Use tungsten carbide-tipped tools and can use high-speed tools
• Keep tools continuously engaged in cut
• Finish by grinding when close tolerances are needed

Workability of Hastelloy S™

• Until final 20% reduction, forge from 2100°F (1149°C) to 1600°F (871°C)
• Perform final 20% reduction from 1900°F (1038°C) to 1500°F (816°C)
• With exceptional ductility, can be readily cold worked

To Send a Request for Quote for Hastelloy S™, please Click Here, or call 1.973.276.5000 or fax 1.973.276.5050.