Alloy 6B (UNS R30016) is a wrought cobalt-chromium-tungsten alloy offering superior toughness, weldability, and corrosion resistance compared to cast or welded Alloy 6. With excellent hot hardness up to 850°C, high creep resistance exceeding 10,000 hours, and low coefficient of friction, it excels in demanding wear applications including aerospace bearings, steam turbine erosion shields, valve components, and pump hardware .
1. Product Specifications & Physical DataZYTC Alloy supplies Alloy 6B (UNS R30016) in mill forms for critical wear applications requiring verified mechanical properties and complete material traceability. Available Forms: Bar, sheet, plate, wire, and custom components . Specifications: AMS 5894, UNS R30016, Boeing BMS7-338, Pratt & Whitney PWA 1196/300 .
| Chemical Composition (Weight %) | Alloy 6B (UNS R30016) Specification |
|---|
| Cobalt (Co) | Balance | | Chromium (Cr) | 28.0 - 32.0 | | Tungsten (W) | 3.50 - 5.50 | | Carbon (C) | 0.90 - 1.40 | | Nickel (Ni) | 3.0 max. | | Iron (Fe) | 3.0 max. | | Manganese (Mn) | 2.0 max. | | Silicon (Si) | 2.0 max. | | Molybdenum (Mo) | 1.50 max. |
| Physical Properties | Metric | Imperial |
|---|
| Density | 8.39 g/cm³ | 0.303 lb/in³ | | Melting Range | 1265 - 1354°C | 2310 - 2470°F | | Thermal Conductivity | 14.7 W/m·K | 0.147 W·cm/cm²·°C |
| Mechanical Properties (AMS 5894) | Metric | Imperial |
|---|
| Tensile Strength (min.) | 896 MPa | 130 ksi | | Yield Strength (min., 0.2% offset) | 483 MPa | 70 ksi | | Elongation (min.) | 5% | 5% | | Reduction of Area (min.) | 7% | 7% | | Hardness (HRC) | 33 - 43 | 33 - 43 |
2. Fabrication & Material ComparisonThe wrought structure of Alloy 6B provides significant advantages over cast Alloy 6 in toughness, weldability, and corrosion resistance . Forming & Workability: Sheets can be formed and/or welded with minimal heat input. Can be fabricated to cover high-wear areas efficiently . Welding: Excellent weldability due to wrought microstructure; can be attached to shafts and components with minimal heat input to avoid distortion . Machining: Can be machined with carbide tooling; supplied in solution-treated condition (AMS 5894) with inherent wear properties, minimizing post-machining heat treatment .
3. ApplicationsValves & Pumps: Valve stems, seats, pump plungers, bushings, sleeves for chemical processing, oil & gas, power generation Aerospace: Turbine blades, steam turbine erosion shields, fan blades, bearings, wear plates Industrial: Furnace fan blades, chain saw guide bars, extruder screws, forming dies, hot extrusion tooling Food Processing: Equipment requiring corrosion and wear resistance in food handling environments Mining & Mineral Processing: Wear liners, screw conveyor flights, seals for abrasive media Steel & Metallurgy: Galvanizing roll necks, continuous casting components, scrapers
Contact ZYTC Alloy for certified Alloy 6B (UNS R30016) materials with complete traceability, AMS 5894 specifications, technical datasheets, and competitive pricing on standard sizes or custom-fabricated components. Email: daisy@zytcsteel.com WhatsApp/WeChat: +86 17335753350 |
