Hastelloy B-2 Round Bar Heat Resistant Alloy Rods for Petrochemical & Pharmaceutical Equipment

1. Product Introduction

2. Product Parameters

3. Executive Standards

• ASTM B335: This American Society for Testing and Materials (ASTM) standard specifies the requirements for nickel - alloy rod and bar, including chemical composition, mechanical properties, dimensional tolerances, and testing methods. Hastelloy B-2 round bars manufactured in accordance with ASTM B335 undergo strict quality control to meet the highest industry standards.
• ASME SB - 335: Developed by the American Society of Mechanical Engineers (ASME), this standard is closely related to ASTM B335 and is widely used in the design and manufacturing of pressure vessels and piping systems in the petrochemical and power industries. Compliance with ASME SB - 335 ensures that the round bars are suitable for critical pressure - containing applications.
• EN 10095: The European standard for heat - resistant steels and nickel - based alloys, EN 10095 sets out the requirements for the chemical composition, mechanical properties, and heat treatment of these materials. Hastelloy B-2 round bars meeting EN 10095 standards are accepted in European markets and other regions that recognize European standards.
• JIS H4552: The Japanese Industrial Standard for nickel and nickel - alloy bars, JIS H4552 specifies the technical requirements for nickel - alloy bars used in various industrial applications. This standard is commonly referenced in Japanese - owned manufacturing facilities and in markets where Japanese technical standards are prevalent.

4. Similar Grades

• Hastelloy B - 3: An improved version of Hastelloy B - 2, Hastelloy B - 3 has a lower carbon content and optimized silicon and iron levels. This modification enhances its resistance to intergranular corrosion and improves its weldability. It is particularly suitable for applications involving high - temperature exposure and welded structures, such as in the petrochemical industry's high - temperature reactors.
• Ni - Mo Alloy 200: Also known as Nickel 200, this pure nickel alloy has good corrosion resistance in reducing environments and is often used in chemical processing equipment. However, compared to Hastelloy B - 2, it has a lower molybdenum content, resulting in slightly lower resistance to strong reducing acids like hydrochloric acid. It is more suitable for less severe corrosion environments.
• Alloy C - 276: Although Alloy C - 276 is a nickel - chromium - molybdenum (Ni - Cr - Mo) alloy (different from the Ni - Mo system of Hastelloy B - 2), it offers excellent all - round corrosion resistance, including resistance to both reducing and oxidizing environments. In some cases where the corrosion environment is complex (containing both reducing and oxidizing agents), Alloy C - 276 can be a viable alternative. However, it has a higher chromium content, which may lead to higher costs compared to Hastelloy B - 2.

5. Other Related Products

• Hastelloy B - 2 Plates: Available in various thicknesses (from 1 mm to 100 mm) and widths (up to 2000 mm), Hastelloy B - 2 plates are used in the fabrication of pressure vessels, storage tanks, and reactor shells. They share the same excellent corrosion and heat resistance properties as the round bars, ensuring compatibility in multi - component equipment systems.
• Hastelloy B - 2 Pipes and Tubes: Our Hastelloy B - 2 pipes and tubes come in seamless and welded varieties, with outer diameters ranging from 6 mm to 600 mm. They are widely used in fluid transportation systems in the petrochemical and pharmaceutical industries, where reliable and corrosion - resistant piping is essential to prevent leaks and contamination.
• Hastelloy B - 2 Welding Consumables: To ensure high - quality welds when joining Hastelloy B - 2 components, we provide a full line of welding consumables, including electrodes, wires, and fluxes. These consumables are formulated to match the chemical composition and mechanical properties of Hastelloy B - 2, ensuring strong and corrosion - resistant weld joints.
• Hastelloy B - 2 Forgings: Custom - manufactured Hastelloy B - 2 forgings are available for applications requiring complex shapes and high strength, such as valve bodies, pump impellers, and fittings. The forging process enhances the mechanical properties of the alloy, making the forgings suitable for heavy - duty and critical applications in harsh environments.