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

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

**Technical Data Sheet: Cobalt Alloy 6B / Stellite 6B Plate (UNS R30016)** **1.0 Product Overview** Cobalt Alloy 6B Plate, commercially known as Stellite 6B Plate (UNS R30016), is a cobalt-chromium-tungsten superalloy supplied in plate form. This product offers exceptional wear resistance, excellent corrosion resistance, and maintained hardness at elevated temperatures, making it ideal for manufacturing wear plates, liners, and other flat components subjected to severe abrasive and corrosive conditions in various industrial 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 GMPa | 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 Room Temperature Properties (As-Cast)** - Hardness: 37-45 HRC - Ultimate Tensile Strength: 690-895 MPa (100-130 ksi) - Yield Strength (0.2% Offset): 480-620 MPa (70-90 ksi) - Elongation: 1-2% - Compressive Strength: 1750-2050 MPa (255-300 ksi) **4.2 Special Plate Properties** - Excellent flatness and dimensional stability - Uniform properties throughout thickness - Good impact resistance despite low elongation - Maintains mechanical properties up to 600°C (1110°F) **5.0 Product Specifications** **5.1 Standard Plate Dimensions** - **Thickness Range:** 6 mm to 100 mm (0.25" to 4") - **Width Range:** 100 mm to 1000 mm (4" to 40") - **Length Range:** 200 mm to 2000 mm (8" to 80") - **Flatness Tolerance:** 0.5 mm per 300 mm **5.2 Available Conditions** - As-cast surface - Rough machined (both sides) - Ground finish - Stress relieved **6.0 Manufacturing Processes** **6.1 Production Methods** - Static casting in sand molds - Continuous casting for uniform structure - Surface grinding to required thickness - Stress relieving for dimensional stability **6.2 Quality Control** - Ultrasonic testing for internal defects - Dimensional verification - Hardness testing at multiple locations - Surface quality inspection **7.0 Heat Treatment** **7.1 Standard Heat Treatments** - Stress Relieving: 650-750°C (1200-1380°F) for 1-2 hours - Solution Treatment: 1190-1230°C (2175-2245°F) - optional - Slow furnace cooling recommended - Protective atmosphere for high temperature treatments **7.2 Special Considerations** - Uniform heating to prevent warping - Adequate support during heat treatment - Controlled cooling rates - Stress relief after heavy machining **8.0 Product Applications** **8.1 Wear Plate Applications** - Chute liners and hopper plates - Conveyor wear strips - Sinter plant pallet bars - Pump casing wear plates - Valve body liners **8.2 Tooling Applications** - Die inserts and wear plates - Cutting blade blanks - Forming tools and dies - Molding components - Fixture wear surfaces **8.3 Industry Specific Uses** - **Mining:** Crusher liners, screen plates - **Steel Industry:** Guide plates, roll guides - **Cement:** Raw mill liners, separator components - **Power Generation:** Fan blades, erosion shields - **Chemical:** Reactor liners, mixer blades **9.0 International Standards & Specifications** | Standard Organization | Standard Number | Description | |----------------------|-----------------|-------------| | ASTM International | ASTM A494 | Cobalt Alloy Castings | | AMS | AMS 5385 | Cobalt Alloy Castings | | DIN | 17445 | Cobalt Base Alloy Castings | | UNS | R30016 | Unified Numbering System | | ISO | 5832-4 | Implants for Surgery | **10.0 Fabrication & Machining** **10.1 Machining Guidelines** - Use carbide or ceramic cutting tools - Maintain positive rake angles (5-15°) - Recommended cutting speed: 10-20 m/min - Use heavy, consistent feeds - Copious coolant for grinding operations **10.2 Cutting & Forming** - Plasma cutting recommended - Abrasive water jet cutting suitable - EDM machining possible - Not suitable for bending or forming **11.0 Quality Assurance** **11.1 Testing Requirements** - Chemical composition verification - Hardness testing (HRC scale) - Ultrasonic testing per ASTM A609 - Dimensional accuracy verification - Surface quality assessment **11.2 Certification** - Mill Test Certificates per EN 10204 3.1 - Full material traceability - Chemical analysis reports - Mechanical test certificates - Non-destructive testing reports **12.0 Performance Characteristics** **12.1 Wear & Corrosion Performance** - Exceptional abrasion resistance - Superior metal-to-metal wear resistance - Excellent galling resistance - Good corrosion resistance in various media - Outstanding erosion resistance **12.2 Design Considerations** - Minimum recommended thickness: 6 mm - Allow for grinding stock in tolerances - Avoid sharp corners and stress concentrators - Consider thermal expansion in mounting designs - Use appropriate fastening methods Cobalt Alloy 6B Plate (Stellite 6B) provides outstanding performance for applications requiring flat components with superior wear and corrosion resistance. Its combination of high hardness, excellent wear characteristics, and good fabricability makes it the material of choice for severe service conditions where conventional materials would fail prematurely. The plate form offers versatility in manufacturing while maintaining the exceptional properties that have established Stellite alloys as industry standards for wear-resistant applications.

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 2344 gallon liquid totes Special package is available on request.