Top 10 Suppliers of Stellite Alloy Materials for 2026
2026-07-20
Introduction
Stellite alloys—a family of cobalt-based, wear-resistant materials born in 1907—have endured for over a century. Yet, when faced with "hellish" operating conditions characterized by the simultaneous presence of high temperatures, high pressures, severe wear, and intense corrosion, they remain the irreplaceable choice. Whether for the sealing surfaces of nuclear power plant valves, the bearing surfaces of artificial joints, or the turbine blades of aero-engines, Stellite serves as the "last line of defense."
As a materials engineer at Lork Group, I frequently interact with purchasing professionals; the question I hear most often is not "What is Stellite?" but rather "Which domestic suppliers are actually reliable?" Today, drawing on my industry insights, I have compiled a reference list of Stellite alloy suppliers for 2026.
| | Disclaimer: The supplier information below is derived from public sources and industry knowledge. The list is not ranked in any particular order and does not constitute a recommendation or endorsement. Please exercise independent judgment based on your specific requirements when making purchasing decisions.
Let’s start with a table: A quick comparison of mainstream Stellite grades
Before discussing suppliers, it is essential to clarify the alloy grades. A common pitfall in procurement is confusing Stellite 6 with Stellite 12; while they look similar, their performance characteristics and suitable applications differ vastly.
| Alloy Grade | Carbon Content | Hardness (HRC) | Key Features | Typical Applications |
|---|---|---|---|---|
|
Stellite 1
|
2.2-2.8% | 51-56 | Maximum hardness, pure wear resistance | High-wear operating conditions without impac |
| Stellite 3 | 2.0-2.7% | 51-55 | High hardness, erosion resistance | Pump and valve internals |
| 0.9-1.4% | 38-44 | Most versatile grade; balances hardness and toughness | Valve sealing surfaces, bushings, saw blades | |
| 1.1-1.7% | 44-49 | High tungsten content; excellent high-temperature wear resistance | High-temperature pure abrasive wear conditions | |
| 0.2-0.3% | 27-40 | A Champion of Toughness: Thermal Shock Resistance | Nuclear power valves, artificial joints, and thermal fatigue environments |
Practical Recommendations:
- Subject to impact and thermal cycling → Choose Stellite 21. With a carbon content of only 0.25%, it sacrifices a small amount of wear resistance to achieve impact and thermal fatigue resistance far superior to other grades.
- Pure abrasive wear, no impact → Choose Stellite 12 or 1. Higher hardness yields better wear resistance but increases brittleness.
- Unsure about the specific operating conditions → Choose Stellite 6. It is the most well-established, versatile "all-rounder" grade, sufficient for 80% of valve sealing surface applications.
Top 10 Stellite Alloy Suppliers in 2026
1. Lork Group (Comprehensive Supply + Technical Consulting)
Lork Group began with Lorkalloy, and its core strength lies in the direct involvement of materials engineers in the material selection process. Its Stellite product range encompasses cast rods, welding wires, forgings, and powder metallurgy components, featuring key grades such as Stellite 6, Stellite 6B, Stellite 12, Stellite 21, and Stellite 1.
Specialized Services:
1. Technical selection consultation: Before procurement, the team assesses operating conditions—such as impact loads, temperature ranges, and welding requirements—to provide tailored grade recommendations;
2. Documentation: Products are supplied with material reports and heat treatment/welding process specifications;
3. Processing services: Support for precision centerless grinding, cut-to-length services, and more.
1. Technical selection consultation: Before procurement, the team assesses operating conditions—such as impact loads, temperature ranges, and welding requirements—to provide tailored grade recommendations;
2. Documentation: Products are supplied with material reports and heat treatment/welding process specifications;
3. Processing services: Support for precision centerless grinding, cut-to-length services, and more.
Ideal for: Procurement projects requiring robust technical backing, particularly for applications with stringent requirements regarding material condition and processing techniques.
2. Jiangsu Jinguo Heavy Industry Machinery Co., Ltd. (Stock Inventory + Castings & Forgings)
Jiangsu Jinguo maintains a large-scale warehouse in Wuxi with an openly listed inventory exceeding 200 tons, positioning itself as a leading supplier of ready-stock materials. Its product range covers various grades, including Stellite 3, Stellite 6, Stellite 6K, Stellite 12, Stellite 19, and Stellite 20.
Key Features: Ample stock availability; supports spectral analysis; offers customization of non-standard parts based on drawings.
Ideal For: Procurement needs requiring rapid delivery, avoiding long customization lead times, and ensuring substantial inventory depth.
3. Shanghai Xinbai Industrial Co., Ltd. (Powder Metallurgy Route)
Xinbai Industrial’s core strength lies in producing Stellite products via powder metallurgy. This method bypasses issues such as casting defects and compositional segregation, making it ideal for parts with complex shapes that are difficult to produce through casting. Their product line encompasses over a thousand items, including bushings, chemical fiber cutting blades, saw blade segments, valve balls, and valve seats.
Specialty: Powder metallurgy process; products are ready for direct use in industries such as petrochemicals, chemical fibers, and wood cutting.
Suitable for: Procurement of parts with complex geometries that are difficult to cast, or applications requiring high material density.
4. Shanghai Moju Special Steel Co., Ltd. (Focus on Customization)
Moju Special Steel specializes in relatively niche Stellite grades—such as Stellite 4, Stellite 19, and Stellite 250—primarily in the form of bars and tubes. They provide comprehensive technical documentation, making them a strong choice for sourcing non-standard grades.
Specialty: Offers pre-sales technical consultation and collaborative processing; supports custom cutting and beveling based on blueprints.
Suitable for: Procurement requiring custom dimensions or special alloy grades.
5. Kennametal (3D Printing Powder Route)
The global industry leader for the Stellite family. Kennametal is a global pioneer in the development and production of gas-atomized cobalt-, nickel-, and iron-based alloy powders. Their Stellite powders are compatible with additive manufacturing processes such as powder bed fusion, directed energy deposition, and binder jetting.
Specialty: Powder particle size can be customized; applications span aerospace, oil & gas, energy, and medical 3D printing sectors.
Suitable for: Enterprises manufacturing Stellite components via additive manufacturing (3D printing).
6. Wuxi Yingguang Alloy Co., Ltd. (Focus on Stellite 6)
Yingguang Alloy specializes in Stellite 6, offering transparent pricing (starting at approximately 250 RMB/kg). Their primary products are bars, and they support custom fabrication based on blueprints as well as cut-to-length services.
Specialty: Transparent pricing; ideal for bulk procurement of standard Stellite 6 specifications.
Suitable for: Procurement involving steady consumption and standard specifications of Stellite 6.
7. Wuxi Jiasiyao Heavy Industry Machinery Co., Ltd. (Plate/Bar + Powder Metallurgy)
Jiasiyao specializes in Stellite-series plates and bars, covering grades such as Stellite 3, 6, 6B, 12, 20, 21, and ASTM F75. Utilizing powder metallurgy processes, the company offers custom manufacturing of non-standard parts based on customer drawings.
Key Features: Offers various forms (plates and bars) and supports third-party testing.
Suitable For: Procurement requiring Stellite plates or custom non-standard parts.
8. Suzhou Xunshi New Materials Co., Ltd. (Trading + Ready Stock)
Xunshi focuses on Stellite 6 and 6B products, with wear-resistant strips (finished block components) as its flagship offering; ready stock is available.
Key Features: Primarily offers ready stock, facilitating quick procurement of small batches.
Suitable For: Orders involving smaller quantities or tight procurement timelines.
9-10. General Remarks
It is difficult to precisely define the remaining two spots. The primary reasons are as follows:
Many steel mills with Stellite production capabilities (such as Baosteel Special Steel) are not specialized cobalt-based alloy manufacturers; consequently, information regarding their supply is often outdated or incomplete in public channels.
There are numerous processing enterprises in the market capable of undertaking custom Stellite processing, yet they do not readily fit into the category of "suppliers."
Practical Guide to Stellite Procurement
On Hardness: "HRC" Is Not the Only Metric
Stellite’s wear resistance relies not merely on matrix hardness but, more importantly, on carbide particles—it is these hard particles that withstand friction during the wear process. Differences in hardness between grades stem from variations in carbon content and carbide-forming elements (such as W and Mo). Before selecting a grade, determine whether the operating conditions involve "abrasive wear" or "impact plus wear."
Stellite’s wear resistance relies not merely on matrix hardness but, more importantly, on carbide particles—it is these hard particles that withstand friction during the wear process. Differences in hardness between grades stem from variations in carbon content and carbide-forming elements (such as W and Mo). Before selecting a grade, determine whether the operating conditions involve "abrasive wear" or "impact plus wear."
On Welding: Preheating Is Mandatory, Not Optional
When performing hardfacing with Stellite welding rods, proper preheating temperatures must be maintained:
When performing hardfacing with Stellite welding rods, proper preheating temperatures must be maintained:
Stellite 6 & Stellite 12: Preheat to at least 300°C
Stellite 21: Preheat to at least 200°C (contains Mo, making it more susceptible to hot cracking)
Welding at room temperature will almost certainly result in cracking or delamination. Lork Group has handled numerous customer complaints regarding "defective material," only to discover that over 90% of the issues were caused by improper welding procedures.
On Form: Significant Differences Between Casting, Forging, and Powder Metallurgy
Cast rods/welding rods: The most common forms; used for welding wire, hardfacing, and as-cast components.
Cast rods/welding rods: The most common forms; used for welding wire, hardfacing, and as-cast components.
Forgings: Feature a denser microstructure and superior mechanical properties compared to cast parts, though Stellite has a narrow forging process window.
Powder metallurgy parts: Ideal for complex shapes, high-volume production, and applications requiring high compositional uniformity.
When purchasing, clarify the product form upfront; do not wait until the goods arrive to discover whether they are cast or forged.
Lork Steels: Specializing in High-Performance Alloy Supply
If you require a more detailed data sheet regarding the properties of Stellite alloys, or would like to request a quotation, please visit our Product Center directly or consult with one of our online engineers.
Operations & Marketing Department | Director of Operations
Email: dasiy@lorkgroup.com
WhatsApp: +86 175 1308 1871
WhatsApp: +86 175 1308 1871
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