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

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

**Technical Data Sheet: Cobalt Alloy 6B / Stellite 6B Sheet (UNS R30016)** **1.0 Product Overview** Cobalt Alloy 6B Sheet, commercially known as Stellite 6B Sheet (UNS R30016), is a cobalt-chromium-tungsten superalloy supplied in thin sheet form. This product combines exceptional wear resistance, excellent corrosion resistance, and good fabricability, making it ideal for applications requiring lightweight yet durable components that must withstand severe abrasive and corrosive conditions in various industrial environments. **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 | | Specific Heat | 420 J/kg·K | 0.10 Btu/lb·°F | 21°C | **4.0 Mechanical Properties** **4.1 Typical Properties (As-Rolled)** - Hardness: 35-42 HRC - Ultimate Tensile Strength: 760-930 MPa (110-135 ksi) - Yield Strength (0.2% Offset): 550-690 MPa (80-100 ksi) - Elongation: 2-5% - Modulus of Elasticity: 211 GPa (30.6 × 10⁶ psi) **4.2 Special Sheet Properties** - Excellent surface finish and flatness - Uniform properties throughout sheet - Good formability in annealed condition - Maintains hardness up to 600°C (1110°F) **5.0 Product Specifications** **5.1 Standard Sheet Dimensions** - **Thickness Range:** 0.5 mm to 6.0 mm (0.020" to 0.250") - **Width Range:** 100 mm to 600 mm (4" to 24") - **Length Range:** 500 mm to 2000 mm (20" to 80") - **Flatness Tolerance:** 0.2 mm per 300 mm **5.2 Available Conditions** - Hot rolled and annealed - Cold rolled and stress relieved - Ground finish (both sides) - Polished finish (special order) **6.0 Manufacturing Processes** **6.1 Production Methods** - Hot rolling from cast slabs - Cold rolling for precise thickness control - Intermediate annealing - Surface grinding and finishing **6.2 Quality Control** - 100% thickness verification - Surface defect inspection - Hardness testing - Dimensional accuracy checking **7.0 Heat Treatment** **7.1 Standard Heat Treatments** - Annealing: 1150-1200°C (2100-2190°F) for 30-60 minutes - Stress Relieving: 650-750°C (1200-1380°F) for 1-2 hours - Slow cooling in protective atmosphere **7.2 Special Considerations** - Controlled heating and cooling rates - Protective atmosphere to prevent oxidation - Adequate support to prevent sagging - Stress relief after forming operations **8.0 Product Applications** **8.1 Industrial Applications** - Wear liner sheets for chutes and hoppers - Shroud segments and seals - Cutting blade stock - Wear washers and spacers - Machinery guard liners **8.2 Specialized Applications** - Food processing wear plates - Pharmaceutical industry components - Paper industry doctor blades - Textile industry guide plates - Printing industry wear parts **8.3 Fabricated Components** - Formed wear strips - Blanked washers and gaskets - Stamped wear parts - Custom shaped liners **9.0 International Standards & Specifications** | Standard Organization | Standard Number | Description | |----------------------|-----------------|-------------| | ASTM International | ASTM F1376 | Cobalt-Chromium Alloy Sheet | | AMS | AMS 5385 | Cobalt Alloy Castings (Sheet 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 Forming & Bending** - Good formability in annealed condition - Minimum bend radius: 2 × thickness - Springback compensation required - Hot forming possible for complex shapes **10.2 Cutting & Machining** - Shear cutting recommended - Laser cutting suitable - Water jet cutting effective - EDM machining for complex shapes **11.0 Quality Assurance** **11.1 Testing Requirements** - Chemical composition verification - Hardness testing (HRC scale) - Surface quality inspection - Dimensional accuracy verification - Flatness measurement **11.2 Certification** - Mill Test Certificates per EN 10204 3.1 - Full material traceability - Chemical analysis reports - Mechanical test certificates **12.0 Performance Characteristics** **12.1 Wear & Corrosion Performance** - Excellent abrasion resistance - Superior metal-to-metal wear resistance - Good galling resistance - Excellent corrosion resistance in various media - Good oxidation resistance up to 980°C **12.2 Design Considerations** - Minimum recommended thickness: 0.5 mm - Allow for springback in formed parts - Consider thermal expansion in assemblies - Use appropriate joining methods - Protect edges from damage Cobalt Alloy 6B Sheet (Stellite 6B) offers exceptional performance in applications requiring thin, formable components with superior wear and corrosion resistance. Its combination of high hardness, excellent wear characteristics, and good fabricability makes it particularly valuable for applications where weight savings and complex geometries are important. The sheet form provides manufacturers with versatile material for producing high-performance components that outperform conventional materials in severe service conditions.

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 2345 gallon liquid totes Special package is available on request.