Cobalt Alloy 6b,Stellite 6b Wire,UNS R30016,E FORU

British Specs:，American Specs: AMS 5894 Bar, Sheet, Plate，German Specs:

**Technical Data Sheet: Cobalt Alloy 6B / Stellite 6B Wire (UNS R30016)** **1.0 Product Overview** Cobalt Alloy 6B Wire, commercially known as Stellite 6B Wire (UNS R30016), is a cobalt-chromium-tungsten superalloy produced in wire form. This product combines exceptional wear resistance, excellent corrosion resistance, and good drawability, making it suitable for various applications including welding electrodes, hardfacing, spring manufacturing, and high-temperature wire forms in severe service conditions. **2.0 Chemical Composition** | Element | Content (%) | Primary Function | |---------|-------------|------------------| | Co | Balance | Matrix Element, provides inherent wear resistance | | Cr | 27.0-32.0 | Corrosion & Oxidation Resistance, forms carbides | | W | 3.0-5.0 | Solid Solution Strengthener, enhances hot hardness | | C | 0.9-1.4 | Primary carbide former for wear resistance | | Si | 1.0 max | Deoxidizer, improves fluidity | | Fe | 3.0 max | - | | Ni | 3.0 max | Austenite stabilizer | | Mn | 1.0 max | Deoxidizer | | Mo | 1.0 max | Secondary strengthener | **3.0 Physical Properties** | Property | Metric Value | Imperial Value | Condition | |----------|--------------|----------------|-----------| | Density | 8.53 g/cm³ | 0.308 lb/in³ | Room Temperature | | Melting Range | 1290-1395°C | 2350-2540°F | - | | Thermal Conductivity | 14.9 W/m·K | 103.0 Btu·in/(hr·ft²·°F) | 21°C | | Mean Coefficient of Thermal Expansion | 14.2 × 10⁻⁶/°C | 7.9 × 10⁻⁶/°F | 20-540°C | | Modulus of Elasticity | 211 GPa | 30.6 × 10⁶ psi | Room Temperature | **4.0 Mechanical Properties** **4.1 Solution Annealed Condition** - Hardness: 32-38 HRC - Tensile Strength: 620-760 MPa (90-110 ksi) - Yield Strength (0.2% Offset): 480-550 MPa (70-80 ksi) - Elongation: 15-25% **4.2 As-Drawn Condition** - Hardness: 35-42 HRC - Tensile Strength: 760-930 MPa (110-135 ksi) - Yield Strength (0.2% Offset): 620-760 MPa (90-110 ksi) - Elongation: 8-15% **5.0 Product Specifications** **5.1 Standard Wire Sizes** - **Diameter Range:** 0.5 mm to 6.0 mm (0.020" to 0.250") - **Tolerance:** ±0.025 mm (±0.001") for diameters < 2mm - **Spool Weights:** 5-250 kg (10-550 lbs) - **Surface Finish:** Bright, clean, oxide-free **5.2 Available Conditions** - Solution annealed - Hard drawn (various tempers) - Stress relieved - Special surface finishes available **6.0 Manufacturing Processes** **6.1 Production Methods** - Hot rolling to rod form - Multi-pass cold drawing - Intermediate annealing - Surface conditioning - Precision spooling **6.2 Quality Control** - Continuous diameter monitoring - Surface defect inspection - Mechanical property testing - Spooling quality verification **7.0 Heat Treatment** **7.1 Standard Treatment** - Solution Annealing: 1150-1200°C (2100-2190°F) - Stress Relieving: 650-750°C (1200-1380°F) - Controlled atmosphere processing **7.2 Special Considerations** - Controlled cooling after annealing - Stress relief after cold drawing - Protective atmosphere for high temperatures **8.0 Product Applications** **8.1 Welding Applications** - Oxy-acetylene welding rods - GTAW and GMAW welding wire - Hardfacing and buildup - Repair of worn components - Cladding applications **8.2 Spring Manufacturing** - High-temperature springs - Valve springs - Instrument springs - Special wire forms **8.3 Component Manufacturing** - Fastener production - Wire mesh for high-temperature filters - Electrical resistance elements - Nuclear components **9.0 International Standards & Specifications** | Standard Organization | Standard Number | Description | |----------------------|-----------------|-------------| | AWS | A5.13 | Cobalt Alloy Welding Electrodes and Rods | | ASTM | F1376 | Cobalt-Chromium Alloy Wire | | AMS | 5792 | Cobalt Alloy Welding Wire | | ISO | 14344 | Welding consumables | | UNS | R30016 | Unified Numbering System | **10.0 Fabrication Characteristics** **10.1 Welding Performance** - Excellent deposition characteristics - Low dilution with base metals - Good wetting and flow properties - Suitable for all-position welding - Minimal spatter generation **10.2 Forming & Machining** - Good cold forming characteristics - Can be coiled and shaped - Suitable for automatic spring winding - Machinable with carbide tools **11.0 Quality Assurance** **11.1 Testing Requirements** - Chemical composition verification - Mechanical property testing - Surface quality inspection - Dimensional accuracy checking - Spooling quality assessment **11.2 Certification** - Mill Test Certificates per EN 10204 3.1 - Full traceability to melt - Chemical analysis report - Heat treatment certification **12.0 Performance Characteristics** **12.1 Wear & Corrosion Performance** - Exceptional metal-to-metal wear resistance - Superior galling resistance - Good corrosion resistance in various media - Excellent oxidation resistance up to 980°C - Outstanding hot hardness properties **12.2 Special Features** - Consistent diameter control - Excellent surface quality - Uniform mechanical properties - Good drawability and formability - Reliable welding performance Cobalt Alloy 6B Wire (Stellite 6B) provides exceptional performance for applications requiring wear-resistant, corrosion-resistant wire products. Its versatility in welding, spring manufacturing, and component production makes it invaluable for severe service applications across aerospace, power generation, chemical processing, and other demanding industries. The wire form offers excellent fabricability while maintaining the superior properties that characterize the Stellite alloy family.

Packing of Standard Packing: Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 2351 gallon liquid totes Special package is available on request.