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Product information

Grade: Stellite 6
Origin: USA

Stellite 6 is a classic cobalt-based alloy known for wear and corrosion resistance. It gets its strength from the dispersion of hard chromium-tungsten carbides, offering a balance of wear resistance, seizure resistance, cavitation resistance, impact toughness, and medium-temperature corrosion resistance. It can maintain stable hardness even at 500°C. It can be processed in weld overlays, castings, or forgings, and its low friction makes it resistant to scratches. Over the past few decades, it has been a go-to standard alloy for general wear resistance and is widely used in valve sealing surfaces, turbine blades, pump impellers, hot forging molds, injection molding screws, and high-temperature sliding components where wear and corrosion occur together.

Product parameter

Chemical Composition

Cobalt (Co) is the balance element and forms the matrix of Stellite 6 alloy, providing excellent toughness and high-temperature structural stability.
Chromium (Cr) content ranges from 28.00% to 32.00%, forming a protective oxide layer and improving corrosion resistance and wear resistance of carbide phases.
Tungsten (W) content is between 3.50% and 5.50%, forming hard tungsten carbides, greatly enhancing wear resistance and erosion resistance.
Carbon (C) content is between 0.90% and 1.40%, forming hard eutectic carbides with chromium and tungsten, which determines wear hardness.
Nickel (Ni) content is no more than 3.00%, improving low-temperature toughness and weldability.
Iron (Fe) content is no more than 3.00%, strictly controlled to avoid reducing wear and corrosion resistance.
Molybdenum (Mo) content is no more than 1.50%, helping to improve pitting resistance and high-temperature strength.
Manganese (Mn), silicon (Si), phosphorus (P), and sulfur (S) are limited to 2.00%, 2.00%, 0.040%, and 0.030% respectively, keeping impurities strictly controlled to ensure a uniform and stable wear-resistant structure.

Mechanical Properties

Tensile Strength: 790 MPa, showing the maximum tensile force the material can withstand.
Yield Strength: 660 MPa, the force at which the material begins to deform permanently.
Elongation: <1%, indicating brittleness in the cast state; suitable for wear-resistant bearing parts but not for bending or forming.
Hardness: 400 HB (36~45 HRC), indicating the material's resistance to indentation and friction wear.
Fatigue Strength: Excellent resistance to seizure and cavitation fatigue under high and low temperature alternating friction conditions; not easy to get scratched or worn.
Elastic Modulus: 220 GPa, reflecting the material's stiffness, with minimal dimensional deformation under high-temperature friction conditions.

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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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From steel procurement, processing, logistics, warehousing, 
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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.




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.




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