Description

Hastelloy B-2 (UNS N10665) is a nickel-molybdenum alloy engineered to deliver excellent resistance to reducing environments and highly corrosive chemical media. With outstanding resistance to hydrochloric acid and good resistance to sulfuric, acetic, and phosphoric acids under suitable conditions, this alloy is a reliable material choice for demanding chemical processing applications.

Combining excellent corrosion resistance, high ductility, and good fabricability, Hastelloy B-2 is widely used in industries where material durability and dependable performance are essential. It is available in multiple product forms, including coils, plates, sheets, strips, foils, pipes, capillary tubes, bars, and wire rods, offering flexibility for different industrial requirements.

Key Features of Hastelloy B-2

1. Excellent Resistance to Reducing Environments

Hastelloy B-2 offers exceptional resistance to reducing acids, particularly hydrochloric acid, making it suitable for equipment and components exposed to aggressive chemical environments.

2. Good Resistance to Localized Corrosion

Its corrosion-resistant properties help protect components against localized corrosion in appropriate service conditions, supporting longer service life and improved equipment reliability.

3. High Ductility and Good Fabricability

The alloy combines high ductility with good fabrication characteristics, making it suitable for manufacturing a wide range of industrial components and customized products.

4. Reliable Performance in Chemical Processing

With its nickel-molybdenum composition, Hastelloy B-2 is designed for applications where resistance to reducing chemicals is a key material requirement.

Important Consideration: Hastelloy B-2 is not generally recommended for strongly oxidizing environments. Material selection should take into account the chemical composition, concentration, temperature, and operating conditions of the service environment.

Chemical Composition of Hastelloy B-2

The typical specified composition limits provided for Hastelloy B-2 are listed below.

Element	Composition (wt.%)
Nickel (Ni)	≥ 65.0
Molybdenum (Mo)	26.0–30.0
Chromium (Cr)	≤ 1.0
Iron (Fe)	≤ 2.0
Cobalt (Co)	≤ 1.0
Manganese (Mn)	≤ 1.0
Silicon (Si)	≤ 0.1
Carbon (C)	≤ 0.02

Its high nickel and molybdenum content contributes to its excellent performance in reducing environments. The relatively low chromium content is also an important characteristic of this alloy.

Physical Properties

Property	Value
Material Grade	Hastelloy B-2 / UNS N10665
Density	Approximately 9.24 g/cm³
Melting Range	Approximately 1330–1380°C

These physical properties make Hastelloy B-2 suitable for specialized industrial applications requiring corrosion-resistant alloy materials.

Mechanical Properties

According to the supplied product specifications, the mechanical properties are as follows:

Property	Specified Value
Tensile Strength	≥ 760 MPa
Yield Strength	≥ 350 MPa
Elongation	≥ 40%
Hardness	≤ 230 HB

Actual mechanical properties may vary depending on product form, thickness, heat treatment, and applicable material specifications. Please refer to the corresponding material test certificate for confirmed values.

Available Product Forms and Dimensions

We offer Hastelloy B-2 products in a range of forms and dimensions to meet different manufacturing and engineering requirements.

Product Form	Available Dimensions
Nickel Alloy Coil	Thickness: 0.3–16.0 mm; Width: 1000–3000 mm
Nickel Alloy Plate / Sheet	Thickness: 0.3–150.0 mm; Width: 1000–3000 mm
Nickel Alloy Strip / Foil	Thickness: 0.02–16.0 mm; Width: 5–3000 mm
Nickel Alloy Pipe	Outside Diameter: 6–1219 mm; Wall Thickness: 0.5–100 mm
Nickel Alloy Capillary Tube	Outside Diameter: 0.5–6.0 mm; Wall Thickness: 0.05–2.0 mm
Nickel Alloy Bar	Diameter: 4–600 mm
Nickel Alloy Wire Rod	Diameter: 0.01–6.0 mm

Customized dimensions and product forms can be discussed according to project requirements and manufacturing availability.

Applicable Standards

The supplied product information references the following standards:

• ASTM B574

• ASTM B575

• ASTM B333

• ASTM B335

• ASME SB-574

• ASME SB-575

• EN NiMo16Cr15W (as listed in the supplied specifications)

Applicable standards depend on the product form and grade requirements. Please confirm the relevant specification before ordering to ensure the selected material meets your technical requirements.

Applications of Hastelloy B-2

Hastelloy B-2 is used in industries where resistance to reducing chemicals and reliable corrosion performance are essential.

Chemical and Petrochemical Processing

Suitable for selected process equipment, piping systems, reactors, and components exposed to reducing acids and corrosive chemical media.

Pollution Control and Flue Gas Desulfurization (FGD)

Can be considered for selected components in pollution-control systems, subject to the actual gas composition, temperature, and corrosion conditions.

Waste Treatment and Incineration

May be used for specialized equipment and components exposed to aggressive chemical environments in waste treatment processes.

Marine and Industrial Engineering

Available in multiple forms for engineered components requiring specific corrosion resistance and mechanical properties. Suitability should be assessed according to the actual operating environment.

Complete Product Range for Different Industrial Needs

Our Hastelloy B-2 product range includes:

• Nickel Alloy Coils: For continuous processing and industrial fabrication.

• Nickel Alloy Plates and Sheets: For equipment manufacturing and custom-fabricated components.

• Nickel Alloy Strips and Foils: For precision components and specialized applications.

• Nickel Alloy Pipes and Capillary Tubes: For fluid handling and engineered piping systems.

• Nickel Alloy Bars and Wire Rods: For machining, component manufacturing, and customized industrial applications.

With multiple product forms and dimensional options, we help customers identify suitable materials for their specific manufacturing and project requirements.

Choose Hastelloy B-2 for Corrosion-Resistant Performance

Hastelloy B-2 (N10665) combines high nickel and molybdenum content, excellent resistance to reducing environments, and good fabrication characteristics. Available in coils, plates, strips, foils, pipes, capillary tubes, bars, and wire rods, it provides a versatile material solution for demanding chemical and industrial applications.

Contact us today for product specifications, material availability, dimensional options, and a quotation tailored to your project requirements.