Supplier of Elgiloy Pyromet Elinvar and Ni-Span-C 902 high-elasticity alloys
2026-08-07
Introduction
In the fields of precision manufacturing and high-end equipment, the choice of elastic alloy often determines a product's core performance and reliability. Whether it involves precision springs for aerospace instruments, implant-grade elastic components for medical devices, or the constant-elasticity requirements of watch hairsprings, selecting the right material is half the battle.
As a supply chain management group with 20 years of experience in specialty alloy manufacturing, Lork Group is dedicated to providing global clients with one-stop supply solutions for high-performance elastic alloys such as Elgiloy, Pyromet, Elinvar, and Ni-Span-C 902.
However, faced with these elastic alloys—each offering distinct properties—procurement professionals often find themselves in a dilemma regarding which to choose. Drawing on insights from past customer inquiries and purchase orders, we have summarized key information across three dimensions—material property comparisons, price range analysis, and supplier selection criteria—to share with you.
Comparison of Four Key Ultra-High-Elasticity Alloy Materials
Before exploring the top ten suppliers, it is essential to clarify the distinctions between these four core elastic alloys—Elgiloy, Pyromet, Elinvar, and Ni-Span-C 902. Since different suppliers specialize in different grades, selecting the right material is the key to choosing the right supplier.
| Comparison Criteria | Elgiloy (3J21/UNS R30003) | Pyromet | Elinvar | Ni-Span-C 902 (3J53) |
|---|---|---|---|---|
|
Product Details
|
- | |||
| Matrix System | Co-Cr-Ni-Mo system | Ni-Cr system (γ' precipitation-strengthened) | Fe-Ni-Cr system (carbide-strengthened) | Fe-Ni-Cr-Ti system (γ' precipitation-strengthened) |
| Modulus of elasticity (GPa) | ~190 | — | 177-183 | 176-191 |
| Tensile strength (MPa) | 1400-2200 | Maintain high strength at high temperatures | ~1250 | Significant improvement after solution treatment and aging |
| Temperature range of constant elasticity | — | — | -40°C ~ +80°C | -45°C ~ +65°C |
| Magnetism | Non-magnetic | Weakly magnetic | Ferromagnetic | Ferromagnetic |
| Corrosion resistance | Excellent (seawater/acidic environments) | Excellent (high-temperature oxidation resistance) | Average | Good |
| Core Applications | Medical implant components, downhole springs for oil and gas wells, precision instrument contact springs | Rocket engines, gas turbines, nuclear reactors | Industrial precision springs, watch hairsprings | Diaphragm capsules, bellows, precision springs, mechanical filters |
Quick Material Selection Guide:
- Ultimate strength + corrosion resistance + non-magnetic properties → Elgiloy (Cobalt-based "all-rounder")
- High-temperature, load-bearing environments (>500°C) → Pyromet X750
- Mass production + constant elasticity + cost-efficiency → Elinvar (Industrial constant-elasticity alloy)
- Precision instruments + constant elasticity + non-magnetic requirement → Ni-Span-C 902
Reference Market Prices for Foreign-Grade Elastic Alloys (Categorized by MOQ)
The prices of elastic alloys are significantly influenced by factors such as fluctuations in raw material costs (e.g., nickel, cobalt), specific product forms (strip, wire, or rod), delivery conditions, and certification requirements. The prices listed below are compiled from open-market data and serve as estimated reference figures excluding tax; actual transaction prices are subject to real-time supplier quotations.
| Grade | 50–100 kg | 100–300 kg | 300–500 kg |
|---|---|---|---|
| Elgiloy (UNS R30003) | ¥2,500-3,200/kg |
¥2,200-2,800/kg
|
¥2,000-2,500/kg |
| Ni-Span-C 902 (UNS N09902) | ¥800-1,100/kg | ¥700-950/kg | ¥600-850/kg |
| Pyromet X750 (UNS N07750) | ¥180-280/kg | ¥150-240/kg | ¥130-200/kg |
| Elinvar | ¥150-250/kg | ¥120-200/kg | ¥100-170/kg |
The prices of elastic alloys are significantly affected by fluctuations in raw material costs (such as nickel and cobalt). Over the past year, cobalt prices fluctuated by 20–30% and nickel prices by 15–25%, with a particularly pronounced impact on the cost of cobalt-based elastic alloys (e.g., Elgiloy/3J21). If budget is a key concern and there are no requirements regarding magnetic properties, the Elinvar series offers a more cost-effective alternative.
Advantages of Top 10 Super-Elastic Alloy Suppliers
1. Lork Group (Comprehensive Supply + Technical Consulting)
- Delivery Advantages
1. Stock Availability: Lork Group maintains regular inventory of precision alloys such as Elgiloy, Ni-Span-C 902, Elinvar, and Vicalloy, enabling rapid shipment of standard specifications.
Proven Delivery Track Record: For instance, an export order for Nimonic 80A to India was successfully completed on schedule, demonstrating robust order execution capabilities for high-temperature alloy materials.
2. End-to-End Production Scheduling: Advanced production processes and strict quality controls are implemented across the entire workflow—from raw material selection to final product dispatch—ensuring timely order completion.
- Processing Advantages
1. Comprehensive Product Forms: Lork Group offers a wide range of product forms, including bars, plates, strips, tubes, wires, and forgings, with support for custom dimensions.
Strip/Foil: Thickness as low as 0.05mm
Wire: Diameter range Φ0.1–6.0mm
Bar: Diameter range Φ5–200mm
2. Customized Delivery Conditions: Products can be supplied in various conditions—such as hot-rolled/hot-forged, cold-rolled/cold-drawn, or solution-treated—to meet specific customer requirements. For materials requiring heat treatment to achieve final properties (e.g., Vicalloy I, Ni-Span-C 902), Lork Group can adjust the delivery condition accordingly.
3. Complex Shape Processing: Taking Vicalloy I as an example, the material exhibits excellent ductility and workability in the solution-treated state, allowing for forming processes such as forging, rolling, stamping, and cold drawing; Lork Group possesses the corresponding processing capabilities.
- Quality Inspection Advantages
1. Full-Process Quality Traceability: Strict quality control standards are enforced at every stage—from raw material procurement to final dispatch—ensuring the quality and consistency of every product batch.
2. Professional Testing Capabilities: Backed by a professional team and specialized testing equipment, Lork Group provides verification of key parameters, such as material composition and mechanical properties.
3. High-Standard Execution: Lork Group’s delivery track record in precision alloys includes technically demanding materials like Nimonic 80A (high-temperature alloy) and Vicalloy I (permanent magnet alloy),
2. Northeast Special Steel Group Co., Ltd.
Established special steel enterprise with deep expertise in elastic alloy wire products
3. Antai Technology Co., Ltd.
State-owned enterprise background; a listed company in the new materials sector
4. Shanghai Moju Special Steel Co., Ltd.
Specialized supplier of cobalt-based elastic alloys (3J21/Elgiloy); utilizes VIM+VAR dual-vacuum melting processes
5. Suzhou Xunshi New Materials Co., Ltd.
Specialized supplier of Ni-Span-C 902 (3J53) thin strip; minimum thickness of 0.025mm; products exported to multiple countries
6. Shanghai Benlai Metal Materials Co., Ltd.
Specialized supplier of Pyromet X750; available in all forms, including round bars, plates, and forgings
7. Suzhou Aiven Special Alloy Co., Ltd.
Specialized manufacturer of high-performance alloys, including Elgiloy and Ni-Span-C 902
8. Beijing Beiye Functional Materials Co., Ltd.
R&D and production base for precision alloys (soft magnetic, permanent magnetic, elastic, and expansion alloys)
9. Wuxi Yingguang Alloy Co., Ltd.
Specialized supplier of Elgiloy; offers custom cutting services with flexible minimum order quantities (starting from 1 kg)
10. Baoji Group Industry Co., Ltd.
A leading enterprise in the field of titanium alloys and specialty alloys.
Suggestion
To obtain real-time quotes, confirm specific dimensions and specifications, and request sample quality inspection reports for alloys such as Elgiloy, Pyromet X750, Ni-Span-C 902, and Elinvar, we recommend contacting the Lork Group sales team directly. Please provide details regarding your required quantities (MOQ), product forms, and certification requirements to receive an accurate quote and technical support.
Operations & Marketing Department | Director of Operations
Email: dasiy@lorkgroup.com
WhatsApp: +86 175 1308 1871
WhatsApp: +86 175 1308 1871
Lork Group Stellite 6B machined bushings exported to Germany
Lork Group Granted National Utility Model Patent for an Aviation Engine Blade Solidification Mold
Related Article
The Lork Group specializes in providing stress shielding solutions for users of titanium alloy orthopedic implants. Our materials include ASTM F1713 titanium rods, Ti-13Nb-13Zr titanium alloy, and other ASTM F1713 titanium products.
Lork Group's Medical Titanium Alloy Implants Solve the Challenge of Stress Shielding
The Lork Group possesses extensive experience in processing cobalt-based alloys and maintains a comprehensive quality control system. The Stellite 6B bushings exported in this shipment—measuring 9 cm in width and 36 cm in diameter—are high-precision components. Delivery takes place only after the products have passed inspection; this process reflects our unwavering commitment to quality and is key to earning the trust of our German clients.
Lork Group Stellite 6B machined bushings exported to Germany
Patent No. ZL 2025 2 1293687.2 focuses on the precision casting of aero-engine blades, demonstrating the Group's sustained innovation capabilities in the fields of specialty steels and precision forming technologies.
Lork Group Granted National Utility Model Patent for an Aviation Engine Blade Solidification Mold
If you are unsure whether to use Stellite 6, 12, or 21 for your current project, simply send us a description of the operating conditions, and Lork Group engineers will provide a free "grade recommendation." Click the button below to submit details regarding operating temperature, corrosive media, and impact conditions, and we will respond within 24 hours.
Top 10 Suppliers of Stellite Alloy Materials for 2026