Haynes® 242® Alloy

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Applications

Seal rings, containment rings, rocket nozzles, pumps, high temperature fluoride bearing environments.

Description

Haynes^® 242^® alloy is an age hardenable nickel-chromium-molybdenum alloy that combines high temperature strength, low thermal expansion, and good oxidation resistance. It derives its strength from a long range ordering reaction upon aging.

Industries Supplied

Aerospace, Nuclear Fuel Processing and Chemical Processing.

Nominal Composition

C: 0.03 max
Mn: 0.80 max
Si: 0.80 max
P: 0.030 max
S: 0.015 max
Cr: 7.0 – 9.0 
Co: 1.0 max 
Mo: 24.0 – 26.0 
Al: 0.50 max
Fe: 2.0 max
Cu: 0.50 max 
B: 0.00 max 
Ni: Balance

Physical Properties

Density: 0.327 lb/in³, (9.05 g/cm³)

Modulus of Elasticity (E): 
At 70°F (20°C): 33.2 x 103 ksi (229 GPa)

Coefficient of Expansion:
6.8 µin/in.-°F (70°F to 1000°F)
12.2 µm/m-°C (20°C to 538°C)

Electrical Resistivity: 48.0 µΩ.in, (122.0 µΩ.cm)

Thermal Conductivity: 75.7 Btu-in/ft²hr-°F, (11.3 W/m-K)

Applicable Specifications

Strip: ASTM B434

Typical Mechanical Properties

• Annealed
  • Heat Treatment: 1900 – 2050°F (925 – 1120°C)
  • Tensile Strength: 105 ksi (725 MPa) Min
  • Suggested Operating Conditions: -300°F to 1800°F (-184°C to 982°C)
• Annealed and Aged
  • Heat Treatment: 1200°F, 24h
  • Tensile Strength: 187 ksi (1288 MPa) typ
  • Suggested Operating Conditions: -300°F to 1800°F (-184°C to 982°C)

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Haynes^® and Haynes 242^® are registered trademarks of Haynes International, Inc.

For further information Contact:

Email: stripinfo@elgiloy.com
Phone: 1 888 843 2350 
Elgiloy Specialty Metals – Strip Products
1565 Fleetwood Dr.
Elgin, IL 60123 USA