Shaped, Flat, Square, Round, Fine Wire, Plated and Un-plated ASTM B434
Alloy 242® Description
Alloy 242 is a nickel-molybdenum-chromium age hardenable alloy which derives strength from a log-range ordering reaction upon aging. It has tensile and creep strength properties up to 1300°F which are as much as double for solid solution strengthened alloys, but with high ductility in the aged condition. The thermal expansion characteristics of alloy 242 are much lower than those for most other alloys, and it has very good oxidation resistance up to 1500°F.
Chemical processing: such as high temperature HF vapor containing process,
fluoroelastomer processing equipment.
Molybdenum: 24.00 – 26.00
Chromium: 7.00 – 9.00
Iron: 2.00 max
Cobalt: 2.50 max
Manganese: 0.80 max
Silicon: 0.80 max
Aluminum: 0.50 max
Carbon: 0.03 max
Boron: 0.006 max
Copper: 0.50 max
Density, 0.327 lbs/in³, 9.05 g/cm³
Specific Heat BTU/lb.-°F( J/Kg-K):
At 70°F (21°C): 0.092 (386)
Mean Coefficient of Thermal Expansion: in/in/°F (mm/m/°C):
70-212°F (20-100°C): 6.0 x 10 (10.8)
Thermal Conductivity: BTU-in/h-ft-°F (W/m-°K):
70°F (21°C): 75.7 (11.3)
Modulus of Elasticity: KSI (MPa)
33.2 x 10³ (229 x 10³) in tension
Melting Range: 2350-2510°F (1290-1375°C)
Mechanical Properties at Room Temperature
Ultimate Tensile Strength: 105 KSI min, (950 MPa min)
Yield Strength: (0.2% offset) 45 KSI min, 310 MPa min)
Elongation: 40% min
Grain Size: ASTM 3 min
Alloy 242 can be cold rolled to achieve the temper properties required by specific customers and/or manufacturing requirements. Contact Ulbrich Wire for details.
Refer to NACE (National Association of Corrosion Engineers) for recommendations
Standard Wire Finishes
Extra Clean: (XC) Extra clean is also referred to as “bright annealed” or “bright annealed and cold rolled”
Grease (round wire only): Drawn in a heavy grease produces an “Ultra bright” finish for decorative applications
Soap (round wire only): Soap is used as a lubricant in the drawing process and is not removed. It acts as a lubricant during customer part forming operation.
A soap finish is available in tempered products.
Plated: Many plating options are available.
*Special finishes are available: Contact Ulbrich Wire Sales with special finish and plating requests.
Cut to lengths
ALLOY 242 can be hardened by:
Cold working and age hardening
For best results refer to: SSINA’s “Welding of Stainless Steels and Other Joining Methods”
Haynes® 242 is a registered trademark of Haynes Alloys
Limitation of Liability and Disclaimer of Warranty: In no event will Ulbrich Stainless Steels and Special Metals, Inc., be liable for any damages arising from the use of the information included in this document or that it is suitable for the ‘applications’ noted. We believe the information and data provided to be accurate to the best of our knowledge but, all data is considered typical values only. It is intended for reference and general information and not recommended for specification, design or engineering purposes. Ulbrich assumes no implied or express warranty in regard to the creation or accuracy of the data provided in this document.