Hastelloy® B-2 (Alloy B-2) Wire UNS N10665

Alloy B-has excellent resistance to hydrochloric acid at all concentrations and temperatures.

Full Name
Business Address

Shaped, Flat, Square, Round, Fine Wire, Plated and Unplated ASTM B333

Hastelloy®B-2 Alloy Description

Alloy B-has excellent resistance to hydrochloric acid at all concentrations and temperatures. Therefore, it has great resistance to stress-corrosion cracking and pitting. It also withstands hydrogen chloride, sulfuric, acetic and phosphoric acids.


Used for most chemical process applications in the welded condition
Gasoline refining

Chemistry Typical

Nickel: Balance
Molybdenum: 26.00-30.00
Iron: 2.00 max
Chromium: 1.00 max
Cobalt: 1.00 max
Manganese: 1.00 max
Silicon: 0.10 max
Phosphorus: 0.040 max
Sulfur: 0.030 max
Carbon: 0.02 max

Physical Properties

Density: 0.333 lb/in³, 9.22 g/cm³

Electrical Resistivity: ohm-cm
At 212°F (100°C): 0.000138

Specific Heat: BTU/lb-°F (J/g-°C)
At 212°F (100°C): 0.0930 (0.389)

Thermal Conductivity: BTU-in/hr-ft²-°F (W/m•K)
At 32°F (0°C): 77.0 (11.1)
At 212°F (100°C): 84.7 (12.2)
At 392°F (200°C): 93.0 (13.4)
At 572°F (300°C): 101.0 (14.6)
At 752°F (400°C): 111.0 (16.0)
At 932°F (500°C): 120.0 (17.3)
At 1110°F (600°C): 130.0 (18.7)

Mean Coefficient of Thermal Expansion: µin/in-°F (µm/m-°C)
68-199°F (20-93°C): 5.72 (10.3)
68-399°F (20-204°C): 6.00 (10.8)
68-601°F (20-316°C): 6.22 (11.2)
68-801°F (20-427°C): 6.39 (11.5)
68-1000°F (20-538°C): 6.50 (11.7)

Modulus of Elasticity: KSI (MPa)
31.5 x 10³ (217 x 10³) in tension

Melting Range: 2426-2516°F (1330-1380°C):

Mechanical Properties at Room Temperature

Properties: Annealed Typical

Ultimate Tensile Strength: 110 KSI min (758 MPa min)
Yield Strength: 51 KSI min (352MPa min )
Elongation: 40 % min
Hardness: Rb 100 max

Properties Tempered

Alloy B-2 can 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.


Continuous Coils
Cut to lengths
Precision cutting

Heat Treatment

Alloy B-2 is non hardenable by heat treatment.


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

Hastelloy® B2 is a registered trademark of Haynes International, Inc.
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.

Get a Quote

Thanks for your interest in Ulbrich! Whether you're developing a new product or ramping up production, we'll be happy to learn more about your specific needs. Please fill out the form below, and we will promptly get back to you with a quote or, if needed, a request for more information.

  • Product

  • Contact information

  • Request Details

  • Additional criteria and file



Thank you!

Form submitted successfully. Someone from Ulbrich will be in-touch with you soon.


Which product or service are you interested in?

To ensure your request gets routed to the right Ulbrich team, let us know which
metal product, or service you're looking to source.