Premium Stellite Alloy Products from Qihang Bida - Superior Wear & Heat Resistance
Browse our comprehensive selection of Stellite Alloy products. Qihang Bida - S delivers high-performance cobalt-based alloys for extreme environments.
Introduction
What Is Stellite Alloy?
Stellite represents a family of cobaltchromium superalloys featuring complex carbide precipitates embedded within the metallic matrix, celebrated for outstanding hot hardness, hightemperature stability, superior chemical corrosion resistance and exceptional antiwear performance.
As cobalt-base alloys, Stellite gains reliable high-temperature mechanical strength and inherent wear resistance primarily from its cobalt substrate.
Corrosion & Wear Performance
Chromium enables the formation of a dense passive oxide film to prevent corrosive attack; supplementary tungsten, molybdenum and carbon further boost bulk hardness and service durability.
Excellent Hot Hardness
Unlike ordinary carbon/alloy steels that soften under intense heat, Stellite preserves hardness and cutting integrity at extreme operating temperatures.
Processing Feature
Its inherent high hardness makes conventional machining challenging. Components are mostly near-net shaped via precision casting, with final dimensional finish achieved by grinding.
Applications
Stellite Alloy Applications
Thanks to robust comprehensive performance, Stellite serves critical components operating under severe service conditions.
01
Aerospace
Hot-section overlay coatings, combustor components and turbine bearing parts.
02
General Industry
Slurry pump parts, valve trim assemblies, rotary sealing rings and hot forging dies.
03
Cutting Tools
High-speed cutting blades and saw teeth maintaining sharp cutting edges under elevated temperatures.
FAQ
Stellite Alloy FAQs
What Is Stellite Alloy?
Stellite alloy is a family of cobalt-based wear-resistant and corrosion-resistant alloys developed for demanding industrial environments. These alloys typically contain cobalt as the primary element, along with chromium, tungsten, molybdenum, carbon, and other alloying elements. Stellite alloys are widely used in applications requiring excellent resistance to abrasion, erosion, galling, high temperatures, and chemical attack. Common industries using Stellite alloys include oil & gas, power generation, mining, aerospace, chemical processing, automotive manufacturing, and metalworking.
Can Stellite Alloy Be Welded?
Yes. Stellite alloys are commonly applied through welding and hardfacing processes, including:
TIG welding MIG welding Plasma transferred arc (PTA) welding Laser cladding Oxy-acetylene welding Proper welding procedures and preheating requirements depend on the substrate material and specific Stellite grade.
What Temperature Can Stellite Alloy Withstand?
Depending on the grade, Stellite alloys can maintain their mechanical properties and wear resistance at temperatures exceeding 800°C (1472°F). Certain high-temperature grades used in aerospace and turbine applications can perform effectively at even higher temperatures.
What Are the Main Advantages of Stellite Alloy?
Stellite alloys offer several performance benefits:
Exceptional wear and abrasion resistance Excellent corrosion and oxidation resistance High hardness retention at elevated temperatures Outstanding resistance to galling and metal-to-metal wear Good thermal stability in harsh environments Long service life and reduced maintenance costs These characteristics make Stellite alloys ideal for components exposed to severe mechanical and thermal stress.
Is Stellite Alloy Magnetic?
Most stellite alloys are generally non-magnetic or exhibit very low magnetic permeability in their annealed condition. However, magnetic properties can vary depending on alloy composition, manufacturing process, and service conditions.
How Long Does Stellite Alloy Last?
Service life depends on the application, operating environment, and maintenance practices. In many wear-critical applications, Stellite-coated components can last several times longer than conventional steel parts, significantly reducing replacement frequency and production downtime.
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