Kanakratna Steelage Private Limited

 Introduction

Hastelloy B-2 Round Bars (UNS N10665) are premium nickel-molybdenum alloy round bars designed for extreme resistance to hydrochloric acid and other aggressive reducing environments. Belonging to the Hastelloy family of superalloys, Hastelloy B-2 is widely recognized for:

• Exceptional corrosion resistance against hydrochloric, sulfuric, acetic, and phosphoric acids.

• Excellent resistance to stress corrosion cracking (SCC) and pitting corrosion in reducing conditions.

• Superior mechanical strength at both room and elevated temperatures.

When supplied in round bar form, Hastelloy B-2 is used in:

• Chemical process equipment

• Valves, pumps, shafts, fasteners

• Heat exchangers and pressure vessels

Chemical Composition, %

 

ASTM Specifications

Mechanical Properties

Typical Room Temperature Tensile Properties of Annealed Material

Additional Information:

• Production Capacity: 2 TONS
• Delivery Time: READY AVAILABLE
• Packaging Details: The packaging of the product is done using an effective method of packaging. It all includes- • Shrink-wrapping • Bubble wrapping • Carton boxes • Wooden crates/pallets/boxes

 Introduction

The modern industrial world requires materials capable of withstanding highly corrosive environments, extreme temperatures, and mechanical stress. One of the most reliable solutions is Hastelloy B-2, a nickel-molybdenum alloy that exhibits excellent resistance to hydrochloric acid and other reducing agents.

When this alloy is manufactured into round bars, it offers industries a robust and versatile product that can be machined, forged, or used directly in chemical, marine, aerospace, and oil & gas applications.

The Hastelloy B-2 Round Bar (UNS N10665) is widely recognized for its outstanding resistance to pure hydrochloric acid across all concentrations and temperatures, making it a preferred material for chemical processing equipment and other demanding applications.

This document explores Hastelloy B-2 round bars in detail—covering composition, properties, manufacturing, global standards, applications, and market outlook.

 Chemical Composition (Typical, %)

 

• Nickel (Ni): Balance (~65%)

• Molybdenum (Mo): 26 – 30%

• Iron (Fe): ≤ 2.0%

• Cobalt (Co): ≤ 1.0%

• Chromium (Cr): ≤ 1.0%

• Manganese (Mn): ≤ 1.0%

• Vanadium (V): ≤ 0.35%

• Tungsten (W): ≤ 0.20%

• Carbon (C): ≤ 0.01%

• Silicon (Si): ≤ 0.10%

• Phosphorus (P): ≤ 0.04%

• Sulfur (S): ≤ 0.02%

Mechanical Properties (Typical at Room Temperature)  Physical Properties

• Melting Point: 1330 – 1380 °C

• Thermal Conductivity: 9.0 W/m·K

• Electrical Resistivity: 1.3 µΩ·m

• Magnetism: Non-magnetic

Testing & Quality Control

• Mechanical Tests: Tensile, yield, elongation, hardness.

• Corrosion Tests: ASTM G28 (acid corrosion test).

• NDT Methods: Ultrasonic testing, radiography, eddy current.

• Dimensional Inspection: OD, length, straightness, surface finish.

• Positive Material Identification (PMI): Confirms UNS N10665 compliance.

 

Additional Information:

• Item Code: UNSNO10665
• Production Capacity: IN TONS
• Delivery Time: READY STOCK
• Packaging Details: The packaging of the product is done using an effective method of packaging. It all includes- • Shrink-wrapping • Bubble wrapping • Carton boxes • Wooden crates/pallets/boxes

Introduction

Nickel-based alloys are vital in industries where corrosion, heat, and mechanical stress are extreme. Among these, Hastelloy B-2 (UNS N10665) has emerged as a specialized corrosion-resistant alloy, particularly suited for aggressive reducing environments like hydrochloric acid (HCl), hydrobromic acid (HBr), sulfuric acid (H₂SO₄), and phosphoric acid (H₃PO₄).

When manufactured into plates, Hastelloy B-2 provides industries with a robust, corrosion-resistant material for fabricating reactors, pressure vessels, heat exchangers, chemical process tanks, and piping systems. Unlike general-purpose alloys, Hastelloy B-2 is engineered to minimize carbide precipitation during welding, thereby maintaining resistance in as-welded structures.

Chemical Composition of Hastelloy B-2

Hastelloy B-2 is a nickel-molybdenum alloy with minimal iron and chromium content, designed to resist reducing acids.

 

Mechanical & Physical Properties

Hastelloy B-2 plates offer good mechanical strength combined with exceptional corrosion resistance.

Dimensions & Availability

• Thickness: 0.5 mm – 100 mm

• Width: 1000 – 3000 mm

• Length: 2000 – 12000 mm

• Custom Fabrication: Available for reactors, vessels, and piping systems.

Testing & Quality Standards

• Chemical Analysis – Optical Emission Spectrometry (OES)

• Mechanical Testing – Tensile, impact, hardness

• Corrosion Testing – ASTM G28 (acid immersion)

• NDT Methods – Ultrasonic, radiography

• Certifications: EN 10204 3.1 / 3.2, NACE MR0175, PED

Heat Treatment

• Solution annealed at 1065 °C, rapid quenched.

• Prevents carbide precipitation and intermetallic formation.

Additional Information:

• Production Capacity: IN TONS
• Delivery Time: READY STOCK
• Packaging Details: The packaging of the product is done using an effective method of packaging. It all includes- • Shrink-wrapping • Bubble wrapping • Carton boxes • Wooden crates/pallets/boxes

 Introduction

Hastelloy B-2 is a nickel-molybdenum alloy known for its exceptional resistance to reducing environments, such as hydrochloric acid and hydrogen chloride. Among the many forms in which it is used, Hastelloy B-2 pipes are especially valuable for transporting corrosive fluids in chemical processing plants, pharmaceuticals, power generation, and marine systems.

Hastelloy B-2 pipes offer excellent corrosion resistance, good mechanical strength, and high ductility across a wide temperature range. This document explores every aspect of Hastelloy B-2 pipes, from their chemical makeup to industrial applications, fabrication methods, mechanical properties, and global standards.

CompositionHastelloy B-2 (UNS N10665) is primarily composed of nickel and molybdenum. The absence of iron and chromium improves its resistance to stress corrosion cracking and pitting in highly reducing environments.

 

Mechanical Properties  Physical Properties Packaging

• End caps for protection

• Plastic wrap or wood crates

• Export-worthy seaworthy packing

Certifications

• EN 10204 3.1 / 3.2

• NACE MR0103 compliance

• ISO 9001, PED 2014/68/EU

Types, Sizes, and Specifications

Hastelloy B-2 pipes are available in:

• Seamless Pipes: Up to 24" NB

• Welded Pipes: Up to 48" NB

• Schedule: SCH 5S to SCH 160

• Length: Standard (6m), Custom lengths available

• End Types: Plain end, bevel end, threaded (for low-pressure systems)

Additional Information:

• Item Code: UNSN10665
• Production Capacity: In Tons
• Delivery Time: READY STOCK
• Packaging Details: The packaging of the product is done using an effective method of packaging. It all includes- • Shrink-wrapping • Bubble wrapping • Carton boxes • Wooden crates/pallets/boxes