Hastelloy B-3 Round Bars – Best Choice for Extreme Corrosion Resistance

Hastelloy B-3 is a high-performance nickel-molybdenum alloy designed for outstanding resistance to highly reducing environments, particularly hydrochloric acid and other aggressive chemicals. As round bars, this alloy offers superior mechanical strength, corrosion resistance, and durability, making it an excellent choice for demanding industrial applications.

Material Composition and Properties

Hastelloy B-3 round bars consist primarily of nickel and molybdenum, providing enhanced stability and resistance against chemical attack. Key features include:

• Exceptional Corrosion Resistance: Withstands highly aggressive chemicals, including hydrochloric, sulfuric, and phosphoric acids.

• Superior Thermal Stability: Maintains strength and corrosion resistance even at high temperatures.

• High Mechanical Strength: Ensures durability in harsh environments and prevents stress corrosion cracking.

• Excellent Fabricability: Easily machined, welded, and processed without significant carbide precipitation.

Applications of Hastelloy B-3 Round Bars

Due to their outstanding properties, Hastelloy B-3 round bars are widely used in:

1. Chemical Processing Industry: Utilized in reactors, heat exchangers, piping systems, and pressure vessels handling corrosive chemicals.

2. Aerospace and Defense: Used in high-performance structural components exposed to extreme conditions.

3. Marine and Offshore Engineering: Ideal for seawater-resistant structures and marine equipment.

4. Pharmaceutical and Biotechnology Industry: Applied in sterile processing equipment requiring high corrosion resistance.

5. Energy and Power Generation: Used in nuclear, geothermal, and petrochemical sectors requiring high-strength, corrosion-resistant materials.

Grades and Standards

Hastelloy B-3 round bars meet stringent international standards to ensure high quality and reliability:

• UNS Number: N10675

• ASTM Standards: ASTM B335 (Round Bars & Rods)

• EN/DIN Equivalent: 2.4600

Manufacturing Process

The production of Hastelloy B-3 round bars follows advanced metallurgical techniques to ensure precision and superior performance:

1. Melting and Alloying: Produced using vacuum induction melting (VIM) or electric arc furnace (EAF) for maximum purity.

2. Hot and Cold Rolling: Achieves precise dimensions and enhances mechanical properties.

3. Annealing and Heat Treatment: Improves corrosion resistance and ensures structural stability.

4. Surface Finishing: Includes pickling, passivation, and polishing for optimal performance.

5. Quality Control and Testing: Includes mechanical property evaluation, corrosion resistance testing, and dimensional inspections.

User Requirements and Customization

Industries using Hastelloy B-3 round bars often require custom specifications to meet their operational needs. Common customizations include:

• Varied Bar Diameters and Lengths: Available in multiple sizes to suit different industrial applications.

• Surface Finish Options: Bright, black, or precision-ground finishes for enhanced durability.

• Precision Machining and Cutting Services: Ensuring exact dimensions and application compatibility.

• OEM and Bulk Order Customization: Tailored production for large-scale industrial projects.