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Product information

Grade: UNS N08810
Origin: USA

UNS N08810 is a low-carbon nickel-iron-chromium austenitic heat-resistant alloy. Compared to Alloy 800, it has a higher carbon content range, significantly improved high-temperature creep rupture strength, excellent oxidation, carburization, and sulfidation resistance, and can be used long-term at temperatures up to 900°C. It shows no tendency for intergranular corrosion after welding, and has stable formability during hot and cold working. As a result, over the years, it has been widely used in medium- and high-temperature pressure-corrosion applications such as petrochemical cracking furnace tubes, boiler superheaters, heat-treatment radiant tubes, high-temperature coal chemical heat exchangers, and nuclear power high-temperature pipelines.

Product parameter

Chemical Composition

Iron (Fe) content is the balance, serving as the primary matrix of UNS N08810 alloy, optimizing hot workability and reducing raw material costs.
Nickel (Ni) content ranges from 30.00% to 35.00%, stabilizing the austenitic structure and improving high-temperature toughness and corrosion resistance.
Chromium (Cr) content ranges from 19.00% to 23.00%, forming a dense oxide film to resist high-temperature oxidation, carburization, and sulfide corrosion.
Carbon (C) content ranges from 0.05% to 0.10%, precisely controlled to enhance grain boundary high-temperature creep resistance.
Aluminum (Al) content does not exceed 0.60%, helping improve high-temperature oxidation resistance.
Titanium (Ti) content does not exceed 0.60%, refining grains and stabilizing high-temperature structure.
Manganese (Mn), silicon (Si), copper (Cu), phosphorus (P), and sulfur (S) are limited to 1.50%, 1.00%, 0.75%, 0.040%, and 0.015% respectively, strictly limiting impurities to ensure long-term high-temperature stability.

Mechanical Properties

Tensile Strength: 590 MPa, indicating the maximum pulling force the material can withstand.
Yield Strength: 235 MPa, the force at which the material starts to deform permanently.
Elongation: 42%, showing the material can undergo significant deformation before breaking, making it less likely to crack during bending or stamping.
Hardness: 185 HB, reflecting the material's resistance to indentation by hard objects; machining in the annealed state is easier.
Fatigue Strength: Stable fatigue life under medium-high temperature and alternating hot and cold atmospheres; long-term high-temperature pressure cycles are less likely to cause cracking.
Elastic Modulus: 196 GPa, reflecting the material's stiffness; deformation under high-temperature stress is minimal, providing excellent dimensional stability for high-temperature tubes and heat exchange components.

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COMPANY PROFILE




Shiyu Metal Material Technology Co., Ltd. is a collection of procurement, processing, agent, sales, logistics, warehousing in one of the enterprises, the company has a large-scale spot supply base in China, with domestic and foreign large steel mills and suppliers to maintain good relations of cooperation, with a full range of multi-channel procurement resources.
Shiyu Metal main products: nickel base alloy, Hastelloy, super austenitic stainless steel, duplex stainless steel, cobalt base alloy, pure nickel, titanium and titanium alloy, heat resistant, corrosion resistant alloy and other kinds of steel, a large number of product categories, can meet the size and thickness customization, prefabrication and other diversified needs.
The company has ISO9001 quality certification, the company's product standards include: the United States (UNS) ASTM /ASME, AMS, German DIN/EN, Japan (SUS) JIS and other standards supply, provide the original material certificate. We can supply according to the standards and technical requirements provided by customers to ensure that the goods and specifications are complete to meet the needs of various merchants. From raw materials to finished products, all go through three quality inspection to ensure the qualified rate of finished products. Shiyu Metal strives for perfection in every detail to ensure that the quality of products in different countries and regions around the world can meet international standards. Shiyu Metal has established a good strategic cooperative relationship with the world famous steel mills such as HAYNES, ATI, SPECIALMETALS, VDM, OUTOKUMPU, Japan Metallurgy, Nippon Steel, and Datong Special Steel.
The products supplied by Shiyu Metal are widely used in nuclear power, petrochemical, mechanical engineering, precision processing, aerospace, electronic instruments, medical equipment, automobile manufacturing, environmental protection, wind power application, seawater desalination, shipbuilding industry, paper making machinery, mining engineering, cement manufacturing, metallurgical manufacturing, corrosion resistant environment field, high temperature environment field, mold field, etc. It is a global high-quality supplier of special steel materials.
Shiyu Metal Material Technology Co., Ltd. is committed to the purchase, agent and sales of special steel, and has a perfect special steel sales management system and product quality supervision system. The company has been adhering to the "integrity, innovation, responsibility, win-win" business philosophy, adhere to the "quality first, customer first" service purpose, to provide customers with quality services and high-quality steel products. Shiyu Metal actively participates in the development of domestic steel industry ecology, and is willing to contribute to the development of national special steel.



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Shiyu Metal maintains good cooperative relations with medium and large steel mills and suppliers at home and abroad, 

and has established good strategic cooperative relations with world famous steel mills such as the United States, Germany, Finland and Jap.




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Shiyu Metal set procurement, processing, agency, sales, logistics, 

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