Hastelloy® C-276 (Alloy C-276) Wire UNS N06985

Hastelloy® c276 is a versatile nickel-molybdenum-chromium with added tungsten alloy fit for applications that demand a supreme level of corrosion resistance found in extreme environments. The high nickel and molybdenum contents of Hastelloy C-276 means that this nickel steel alloy is especially resistant to pitting and crevice corrosion and its low carbon content minimizes grain-boundary carbide precipitation during welding to maintain resistance to corrosion in heat-affected zones of welded joints.

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Short Description

Hastelloy® C-276 Shaped, Flat, Square, Round, Fine Wire, Plated and Bare Wire


Specification

Specification
ASTM B582


Hastelloy® C-276 Alloy Description

Alloy C-276, a nickel-molybdenum-chromium-tungsten alloy with excellent general corrosion resistance and good
formability. It resists the formation of grain boundary precipitates in the weld-heat affected zone making it a candidate for most chemical and petrochemical processing applications in the as-welded condition. C-276 is readily fabricated by welding using methods similar to those utilized for nickel-based alloys.

What are the applications of Hastelloy C-276 Alloy?

  • Marine hardware
  • Chemical processing components
  • Agrichemical and petrochemical production
  • High Temperature Superconductor Tape
  • Pulp and paper production
  • Waste treatment
  • Pharmaceutical Processing
  • Food Processing

What is the chemical composition of Hastelloy C-276?

ElementMinMax
NickelBalanceBalance
Chromium
14.50
16.50
Molybdenum
15.00
17.00
Iron4.00
7.00
Tungsten3.00
4.50
Cobalt2.50
2.50
Manganese1.00
1.00
Carbon0.0100.010
Vanadium0.35
0.35
Silicon0.080.08
Sulfur0.0300.030
Phosphorous0.040
0.040



Physical Properties

Density: 0.321 lbs/in³,8.89 g/cm³

Mean Coefficient of Thermal Expansion: in/in/°F (mm/m/°C):

70-212°F (20- 100°C): 6.2 x 10-6 (11.2)

Thermal Conductivity: BTU-in/h-ft-°F (W/m-°K): 70°F (21°C): 71(10.2)

Modulus of Elasticity: KSI (MPa)
29.8 x 10³(205 x 10³) in tension

Melting Point: 2500°F (1371°C)

What are the Mechanical Properties of Hastelloy C-276 at Room Temperature?

Annealed Typical

Ultimate Tensile Strength: 100 KSI min (690 MPa min)
Yield Strength: (0.2% offset) 45 KSI min (310 MPa min)
Elongation: 40% min
Hardness: Rb 100 min (aim)

Properties Tempered

Alloy C-276can be cold rolled to achieve the temper properties required by specific customers and/or manufacturing requirements. Contact Ulbrich Wire for details.

Additional Properties

Corrosion Resistance

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.

Forms

Continuous Coils
Cut to lengths
Precision cutting

Heat Treatment

Alloy C-276 Alloy cannot be hardened heat treating

Welding

For best results refer to: SSINA’s “Welding of Stainless Steels and Other Joining Methods

Hastelloy® C-276 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.

For more information on Hastelloy c276, see our strip datasheet.

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