Corrosion-Resistant Hastelloy X Round Bar for Aerospace and Heat Exchanger Projects

Product Overview

Hastelloy X (UNS N06002) is a nickel-chromium-iron-molybdenum alloy specifically engineered for exceptional performance in high-temperature and severely corrosive environments. This solid-solution strengthened superalloy is particularly valued in aerospace and heat exchanger applications where excellent oxidation resistance and reliable structural integrity are required. Our precision-manufactured Hastelloy X round bars undergo stringent quality control to ensure consistent performance in critical applications such as combustion chambers, transition ducts, and heat exchanger components.

Chemical Composition

The chemical composition of Hastelloy X is carefully balanced to provide optimal high-temperature properties and corrosion resistance. The table below details the elemental composition range per international standards.

Table 1: Chemical Composition of Hastelloy X (UNS N06002) (Weight %)

Source: 

• Nickel (Base): Provides the fundamental austenitic matrix, offering inherent ductility, toughness, and resistance to various corrosive media .

• Chromium: The primary element responsible for the alloy's exceptional oxidation resistance at high temperatures by forming a protective chromium oxide scale .

• Molybdenum and Tungsten: Contribute to solid-solution strengthening, enhancing high-temperature strength and creep resistance .

• Iron: Content is optimized to balance performance and cost while maintaining corrosion resistance -1.

Mechanical Properties

Hastelloy X round bars maintain excellent mechanical properties across a wide temperature range, making them suitable for both ambient and high-temperature applications.

*Table 2: Typical Mechanical Properties of Hastelloy X Round Bar (Solution-Annealed Condition)*

The alloy retains significant strength at elevated temperatures, with excellent creep and stress-rupture properties above 790°C (1450°F) . This makes it suitable for prolonged service at temperatures up to 900°C, with short-term exposure capabilities up to 1200°C .

Key Characteristics & Advantages

Hastelloy X offers several distinct advantages for aerospace and heat exchanger applications:

1. Exceptional High-Temperature Strength: The alloy maintains excellent creep and stress-rupture properties at temperatures above 790°C (1450°F), making it ideal for components under sustained mechanical loads in high-temperature environments .

2. Superior Oxidation Resistance: With a chromium content exceeding 20%, Hastelloy X demonstrates outstanding oxidation resistance up to 1200°C . It performs reliably in both oxidizing and reducing atmospheres, preventing rapid degradation.

3. Excellent Resistance to Corrosive Environments: The nickel-chromium-molybdenum base provides strong resistance to various corrosive attacks, including sulfidation, carburization, and halogen-containing atmospheres . This is particularly valuable in aerospace and heat exchanger applications where corrosive environments are common.

4. Good Fabricability: Hastelloy X offers good formability and weldability compared to many precipitation-hardened superalloys . It can be welded using common techniques such as TIG (Tungsten Inert Gas) and MIG (Metal Inert Gas) welding without requiring post-weld heat treatment in most applications .

5. Stable Microstructure: In the solution-annealed condition, the alloy's austenitic matrix with minimal secondary phases ensures long-term stability and performance at high temperatures .

Standards & Equivalent Grades

Hastelloy X round bars are produced to meet various international standards, ensuring material quality and consistency.

Table 3: Standard and Equivalent Grades for Hastelloy X (UNS N06002)

Other relevant standards for Hastelloy X products include AMS 5536 for sheet and strip (commonly used in aerospace applications) and ASTM B622 for seamless pipes and tubes 

Other Available Product Forms

To support comprehensive manufacturing and repair projects across various industries, Hastelloy X is available in multiple forms 

• Sheets and Plates

• Pipes and Tubes (seamless and welded)

• Fittings and Flanges

• Forged Components (rings, discs, custom shapes)

• Welding Consumables (wire, electrodes)

• 3D Printing Spherical Powder 

Packaging and Transport

To ensure our products reach you in perfect condition, we employ rigorous packaging and handling protocols:

• Protective Coating: Round bars are typically coated with a rust-preventive oil to protect against moisture during transit and storage.

• Individual Wrapping: Each bar is individually wrapped in waterproof and anti-corrosive paper or plastic.

• Sturdy Securement: Bundled and securely strapped to wooden or metal pallets to prevent movement and damage during transportation.

• Clear Labeling: All packages are clearly labeled with material grade, heat number, size, and other relevant identification for easy traceability and handling.

• Documentation: Each shipment includes complete documentation, including Material Test Certificates (MTC/CMTR) that certify compliance with the ordered specification, along with heat numbers for traceability.

The Hastelloy X (UNS N06002) round bar represents a premium, high-performance nickel-based alloy specifically engineered to address the most challenging high-temperature and corrosion problems in aerospace and heat exchanger applications. Its balanced composition delivers an optimal combination of extreme oxidation resistance, high structural strength, and excellent fabricability. Manufactured to strict international standards like ASTM B572 and AMS 5536, it provides a reliable material solution for precision-machined components operating under severe conditions, ensuring long service life and operational safety in critical environments. Our comprehensive quality control from melting to final machining guarantees a product that consistently meets the stringent demands of aerospace and heat exchanger applications.