ASTM B574 UNS N10276 Hastelloy C276 Round Bar for Chemical Processing

In the world of chemical processing, manufacturing, and energy, where equipment faces relentless attack from corrosive chemicals, high temperatures, and demanding pressures, the choice of material isn't just important—it’s critical for safety, efficiency, and profitability. ASTM B574 UNS N10276 Hastelloy C276 round bar stands as a premier solution for crafting components that must survive and thrive in these challenging environments. This nickel-based alloy is renowned for its exceptional resistance to a wide spectrum of corrosive media6.

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At DLX, we provide high-quality Hastelloy C-276 round bars that empower engineers and manufacturers to build reliable, long-lasting equipment. Understanding this material's properties, applications, and the trends shaping its use is key to leveraging its full potential.

Specification

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Product Introduction: What is Hastelloy C-276?

Hastelloy C-276 (UNS N10276) is a nickel-molybdenum-chromium-based wrought superalloy designed to handle extremely aggressive chemical environments. Its development was a significant advancement in corrosion-resistant alloys, offering improved manufacturability over its predecessors while maintaining stellar performance5.

The secret to its success lies in its carefully balanced chemical composition:

Nickel (Ni): Provides a stable austenitic matrix and fundamental corrosion resistance1.

Molybdenum (Mo) (15-17%): Imparts outstanding resistance to reducing acids like hydrochloric and sulfuric acid1.

Chromium (Cr) (14.5-16.5%): Provides resistance to oxidizing agents and improves high-temperature oxidation resistance1.

Tungsten (W) (3-4.5%): Enhances the effects of molybdenum, further boosting resistance to reducing acids and strength1.

Low Carbon (C) (<0.01%): This is crucial. The very low carbon content minimizes the precipitation of harmful carbides during welding or exposure to high temperatures, which helps maintain resistance to intergranular corrosion13.

This composition results in a material that is not only highly resistant to corrosion but also offers good mechanical strength and fabricability. DLX's C-276 round bars are supplied in the solution annealed state (heated to 1121-1177°C and rapidly quenched), which ensures a uniform, single-phase austenitic structure that maximizes corrosion resistance and toughness3.

Industry Analysis and Trends: The Growing Demand for Reliability

The market for high-performance alloys like Hastelloy C-276 is strong and evolving. A report indicates the global market for Hastelloy C276 tubes reached $691 million in 2024 and is expected to grow at a CAGR of 5.6%8. This growth is driven by several key trends:

Demand from Traditional and Emerging Industries: While chemical processing, petrochemicals, and oil & gas remain the core users, new applications are emerging rapidly8.

Push for Sustainability and Efficiency: Environmental regulations are pushing industries to adopt materials with longer service lives and lower maintenance requirements. Using C-276 in systems like Flue Gas Desulfurization (FGD) in power plants reduces downtime and prevents leaks, supporting a "replace less, emit less" philosophy2.

Advancements in Manufacturing: Technologies like additive manufacturing (3D printing) are opening new possibilities for creating complex components from C-276, such as for nuclear reactor cooling systems2.

Focus on Supply Chain Security: The reliance on critical raw materials like nickel and molybdenum has led to a greater emphasis on reliable supply chains and advanced melting techniques to ensure material quality and availability2.

At DLX, we monitor these trends closely. Our investment in advanced production technologies and robust supply chain relationships ensures we can meet this growing and changing demand with consistent, high-quality Hastelloy C-276 round bars.

Diverse Applications: Where Our C-276 Round Bars Excel

The unique properties of Hastelloy C-276 make it a versatile material chosen for critical components across numerous industries. Our round bars are machined into parts that are essential for operational integrity:

Chemical Processing & Petrochemicals: This is the primary application area. It's used for reactors, vessels, heat exchangers, piping systems, pump shafts, and valves handling harsh acids like hydrochloric, sulfuric, and acetic acid, especially when chlorides or other halides are present17.

Pollution Control & Waste Treatment: C-276 is a staple in FGD systems (scrubbers, reheaters, dampers, fan blades) for coal-fired power plants, resisting corrosion from sulfur compounds and chlorides. It's also used in industrial and urban waste treatment facilities13.

Pulp & Paper Industry: Its resistance to corrosive bleaching agents like chlorine dioxide, chlorates, and chlorines makes it ideal for digesters, bleach washers, and piping in pulp production17.

Pharmaceutical Industry: Used in equipment where high purity and resistance to aggressive cleaning agents and process chemicals are mandatory to prevent contamination1.

Marine and Offshore Oil & Gas: Components exposed to seawater and sour gas (containing H₂S and chlorides) benefit from its superb resistance to pitting and stress corrosion cracking36.

Emerging Applications: The alloy is finding new roles in green hydrogen production (PEM electrolyzers handling acidic electrolytes), deep-sea mining equipment, and next-generation nuclear reactors (molten salt reactors)2.

The DLX Advantage: Why Source Your C-276 Round Bar from Us?

Choosing a supplier for a critical material like Hastelloy C-276 goes beyond just comparing prices. It's about ensuring quality, reliability, and performance. Here’s what sets DLX apart:

Uncompromising Quality from Melt to Mill: We utilize advanced melting techniques like Vacuum Induction Melting (VIM) followed by Electro-Slag Remelting (ESR) or Vacuum Arc Remelting (VAR). This double-melting process drastically reduces impurities and non-metallic inclusions, enhancing the material's purity, homogeneity, and corrosion resistance1. This is a critical differentiator often overlooked in lower-cost offerings.

Rigorous Quality Control & Traceability: Every batch of DLX's C-276 round bar comes with complete traceability and material certification. We recommend and often provide EN 10204 3.2 inspection certificates, which include independent third-party validation of test results1. We also conduct Positive Material Identification (PMI) testing to verify chemistry.

Technical Expertise & Support: We don’t just sell metal; we provide solutions. Our team offers technical support on machining, welding, and heat treatment processes to help you get the best performance from our material. We emphasize proper welding procedures using matching filler metals like ERNiCrMo-4 to preserve corrosion resistance in the weld zone39.

Reliable Supply Chain & Consistency: We understand the importance of on-time delivery for your projects. Our managed supply chain and inventory strategies aim to provide a consistent and reliable source of high-quality C-276 round bars in various diameters and conditions.

In summary, when you choose ASTM B574 UNS N10276 Hastelloy C276 round bar from DLX, you are investing in more than just a raw material. You are gaining a reliable partner dedicated to providing a premium product that delivers exceptional corrosion resistance, proven performance, and ultimate reliability for your most demanding applications. This commitment to quality ensures the equipment you build contributes to safer, more efficient, and more sustainable industrial operations.

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About Us:

Our 12,000㎡ factory is equipped with complete capabilities for research, production, testing, and packaging. We strictly adhere to ISO 9001 standards in our production processes, with an annual output of 1,200 tons. This ensures that we meet both quantity and quality demands. Furthermore, all products undergo rigorous simulated environment testing including high temperature, high pressure, and corrosion tests before being dispatched, ensuring they meet customer specifications. 

For all our clients, we offer timely and multilingual after-sales support and technical consulting, helping you resolve any issues swiftly and efficiently.

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FAQs:

What is Hastelloy C-276?

Hastelloy C-276 is a nickel-molybdenum-chromium alloy known for its exceptional corrosion resistance in harsh environments, including oxidizing and reducing media3.

What are the key features of Hastelloy C-276?

It offers excellent resistance to pitting, crevice corrosion, stress-corrosion cracking, and maintains good strength and stability at high temperatures6.

What is the typical chemical composition of UNS N10276?

Ni (Balance), Mo (15-17%), Cr (14.5-16.5%), Fe (4-7%), W (3-4.5%), Co ≤2.5%, C ≤0.01%, Mn ≤1.0%, Si ≤0.08%, V ≤0.35%, P ≤0.04%, S ≤0.03%5.

What are the common applications of C-276 round bars?

They are widely used in chemical processing, pollution control, pulp and paper production, waste treatment, flue gas desulfurization (FGD) systems, and pharmaceutical industries37.

What standards does DLX's C-276 round bar comply with?

Our round bars meet ASTM B574, ASME SB574, and other relevant international standards9.

What are the mechanical properties of Hastelloy C-276 round bar?

Typical mechanical properties (in annealed condition) include: Tensile Strength ≥ 758 MPa, Yield Strength (0.2% Offset) ≥ 363 MPa, Elongation ≥ 62%, Hardness ≤ 88 Rb3.

Can Hastelloy C-276 be welded?

Yes, it has good weldability using common methods like GTAW and GMAW, with recommended filler metals such as ERNiCrMo-439.

Why is DLX a preferred supplier for Hastelloy C-276 round bars?

DLX ensures superior quality through advanced VIM+ESR/VAR melting, strict process control, comprehensive testing, and reliable supply chain management, providing bars with optimized corrosion resistance and mechanical properties.