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

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

**Technical Data Sheet: Cobalt Alloy 6B / Stellite 6B Strip (UNS R30016)** **1.0 Product Overview** Cobalt Alloy 6B Strip, commercially known as Stellite 6B Strip (UNS R30016), is a cobalt-chromium-tungsten superalloy supplied in thin, narrow strip form. This product combines exceptional wear resistance, excellent corrosion resistance, and precise dimensional control, making it ideal for high-volume production of small, precision components through stamping, forming, and other automated manufacturing processes in severe service applications. **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 | | Electrical Resistivity | 0.87 μΩ·m | 33.8 μΩ·in | 21°C | **4.0 Mechanical Properties** **4.1 Typical Properties (Cold Rolled)** - Hardness: 38-44 HRC - Ultimate Tensile Strength: 830-1000 MPa (120-145 ksi) - Yield Strength (0.2% Offset): 620-760 MPa (90-110 ksi) - Elongation: 1-3% - Modulus of Elasticity: 211 GPa (30.6 × 10⁶ psi) **4.2 Special Strip Properties** - Excellent dimensional consistency - Superior surface finish - Uniform mechanical properties - Good spring characteristics - Consistent temper for automated processing **5.0 Product Specifications** **5.1 Standard Strip Dimensions** - **Thickness Range:** 0.1 mm to 2.0 mm (0.004" to 0.080") - **Width Range:** 10 mm to 200 mm (0.4" to 8") - **Coil Weight:** Up to 500 kg (1100 lbs) - **Thickness Tolerance:** ±0.005 mm (±0.0002") - **Width Tolerance:** ±0.05 mm (±0.002") **5.2 Available Conditions** - Annealed (soft condition) - 1/4 Hard, 1/2 Hard, Full Hard - Stress relieved - Bright annealed surface **6.0 Manufacturing Processes** **6.1 Production Methods** - Precision cold rolling - Multi-stand rolling mills - Controlled atmosphere annealing - Precision slitting - Surface conditioning **6.2 Quality Control** - Continuous thickness monitoring - Surface defect detection - Width and edge quality control - Mechanical property testing **7.0 Heat Treatment** **7.1 Standard Heat Treatments** - Annealing: 1150-1200°C (2100-2190°F) in protective atmosphere - Stress Relieving: 650-750°C (1200-1380°F) for 30-60 minutes - Controlled cooling rates **7.2 Special Considerations** - Uniform temperature distribution - Protective atmosphere essential - Precise time-temperature control - Stress relief after severe forming **8.0 Product Applications** **8.1 Precision Components** - Watch and instrument bearings - Electrical contact springs - Surgical instrument components - Precision guide strips - Wear-resistant springs **8.2 Electrical Applications** - Slip ring contacts - Commutator segments - Electrical brush holders - Contact springs - Switch components **8.3 Industrial Applications** - Seal strips and rings - Bearing retainers - Cutting blade stock - Wear washers and shims - Guide and track components **9.0 International Standards & Specifications** | Standard Organization | Standard Number | Description | |----------------------|-----------------|-------------| | ASTM International | ASTM F1376 | Cobalt-Chromium Alloy Strip | | AMS | AMS 5385 | Cobalt Alloy Castings (Strip derived from) | | UNS | R30016 | Unified Numbering System | | DIN | 2.4778 | German Material Number | | ISO | 5832-4 | Implants for Surgery | **10.0 Fabrication Characteristics** **10.1 Stamping & Forming** - Excellent stamping characteristics in annealed condition - Progressive die stamping capability - Good blanking and piercing characteristics - Consistent springback behavior **10.2 Joining Methods** - Resistance welding suitable - Laser welding excellent - Electron beam welding possible - Brazing with appropriate filler metals **11.0 Quality Assurance** **11.1 Testing Requirements** - Chemical composition verification - Hardness testing (HRC scale) - Surface roughness measurement - Dimensional accuracy verification - Coil quality inspection **11.2 Certification** - Mill Test Certificates per EN 10204 3.1 - Full material traceability - Statistical process control data - Coil identification and tracking **12.0 Performance Characteristics** **12.1 Wear & Corrosion Performance** - Exceptional wear resistance in thin sections - Excellent galling resistance - Good corrosion resistance - Superior metal-to-metal wear characteristics - Maintains properties at elevated temperatures **12.2 Special Features** - Consistent gauge control - Excellent edge quality - Uniform mechanical properties - Optimized for high-speed stamping - Available in precision slit widths Cobalt Alloy 6B Strip (Stellite 6B) provides manufacturers with a precision material for high-volume production of wear-resistant components. Its exceptional combination of wear resistance, consistent quality, and fabrication versatility makes it particularly valuable for applications requiring complex geometries, tight tolerances, and reliable performance in demanding environments. The strip form enables cost-effective manufacturing while maintaining the superior properties that define 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 2346 gallon liquid totes Special package is available on request.