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Product information

Grade: UNS N08800
Origin: USA

UNS N08800 is a nickel-iron-chromium austenitic heat-resistant alloy with a balanced chrome-nickel ratio. It offers stable strength at medium to high temperatures, excellent oxidation and carburization resistance, and can withstand carbonizing and sulfidizing atmospheres. It’s also easy to hot and cold work and weld, with a long-term use temperature of up to 870°C. Because of these properties, it has been widely used over the years in medium-to-high temperature corrosive environments like chemical heat exchangers, heat treatment furnace tubes, boiler superheaters, cracking furnace components, and nuclear power heat exchange pipes.

Product parameter

Chemical Composition

Iron (Fe) is the main base of UNS N08800 alloy and is present in the remainder, which helps reduce cost and improve workability.
Nickel (Ni) content ranges from 30.00% to 35.00%, stabilizing the austenitic structure and enhancing toughness and corrosion resistance.
Chromium (Cr) content ranges from 19.00% to 23.00%, forming an oxide protection layer to resist high-temperature oxidation and carburization corrosion.
Carbon (C) content does not exceed 0.10%; small amounts of carbon improve high-temperature grain boundary strength.
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 controlling impurities to ensure stability under high-temperature conditions.

Mechanical Properties

Tensile Strength: 600 MPa, meaning the maximum stretching force the material can withstand.
Yield Strength: 240 MPa, the force at which the material starts to permanently deform.
Elongation: 40%, indicating how much the material can stretch before breaking.
Hardness: 190 HB, showing the material’s resistance to being penetrated by hard objects.
Fatigue Strength: Stable fatigue life under medium-high temperature cyclic thermal environments, not easy to crack under alternating hot and cold conditions.
Elastic Modulus: 196 GPa, reflecting the material’s stiffness; minimal deformation under high-temperature stress and stable component dimensions.

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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.



ENTERPRISE ADVANTAGE




SERVICE

From steel procurement, processing, logistics, warehousing, 
Shiyu Metal has a perfect management system, tailor-made solutions for each customer, strictly control each link, to ensure safe, efficient and accurate product delivery to customers;




RESOURCE

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.




SCALE

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

warehousing in one, can provide customers with steel products procurement, processing, logistics and other one-stop services.




PRODUCT

Shiyu Metal operates a wide range of steel products, can provide customers with product size and width customization, prefabrication and other services, perfect product quality supervision system, to ensure high standards of product quality, high quality.


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