MP159,MP159 Bar(Round bar, Flat bar),UNS R30159,E FORU

British Specs:，American Specs:AMS 5841 Bar AMS 5845 Bar AMS 5843 Bar，German Specs:

### Technical Data Sheet: MP159 / MP159 Bar / UNS R30159 **Cobalt-Nickel-Chromium Superalloy - Round Bar & Flat Bar Products** --- ### 1. Product Overview **MP159 Bar** (UNS R30159) is supplied in both **round bar** and **flat bar** configurations from the advanced cobalt-nickel-chromium superalloy family. These products offer an exceptional combination of **ultra-high strength** (up to 1790 MPa), excellent corrosion resistance, and outstanding fatigue properties, making them ideal for manufacturing critical components that must withstand extreme conditions up to **650°C (1200°F)**. --- ### 2. Chemical Composition (Weight %) | Element | Content (%) | Metallurgical Function | |---------|-------------|------------------------| | **Cobalt (Co)** | 25.0–30.0 | Matrix element providing high-temperature stability | | **Nickel (Ni)** | 25.0–30.0 | Austenitic structure formation | | **Chromium (Cr)** | 18.0–20.0 | Corrosion and oxidation resistance | | **Iron (Fe)** | 7.0–11.0 | Solid solution strengthening | | **Molybdenum (Mo)** | 6.0–8.0 | Solid solution and precipitation hardening | | **Titanium (Ti)** | 2.5–3.25 | Gamma prime (γ') precipitate formation | | **Niobium (Nb)** | 1.0–1.7 | Carbide and intermetallic formation | | **Aluminum (Al)** | 0.1–0.5 | Precipitation strengthening | | **Carbon (C)** | ≤ 0.04 | Controlled carbide formation | | **Manganese (Mn)** | ≤ 0.50 | Residual element | | **Silicon (Si)** | ≤ 0.50 | Residual element | --- ### 3. Physical Properties | Property | Value | |----------|-------| | **Density** | 8.31 g/cm³ (0.300 lb/in³) | | **Melting Range** | 1350–1400°C (2460–2550°F) | | **Thermal Conductivity** | 14.0 W/m·K at 100°C | | **Mean CTE (20-100°C)** | 12.8 µm/m·°C | | **Electrical Resistivity** | 1.12 µΩ·m at 25°C | | **Magnetic Permeability** | Essentially non-magnetic | --- ### 4. Mechanical Properties **Room Temperature Properties (Aged Condition):** - **Tensile Strength**: 1620–1790 MPa (235–260 ksi) - **Yield Strength (0.2% Offset)**: 1515–1655 MPa (220–240 ksi) - **Elongation**: 10–15% - **Reduction of Area**: 35–50% - **Hardness**: 44–48 HRC **Elevated Temperature Performance:** - **Stress Rupture Strength**: Excellent up to 650°C - **Creep Resistance**: Good maintained properties - **Fatigue Strength**: Outstanding in high-cycle applications --- ### 5. Product Specifications **Round Bar Specifications:** - **Diameter Range**: 5 mm to 200 mm (0.187" to 8") - **Tolerance**: h9 standard, special tolerances available - **Surface Finish**: Hot-rolled, turned, ground, or polished - **Straightness**: Standard commercial, precision available **Flat Bar Specifications:** - **Thickness**: 5 mm to 75 mm (0.187" to 3") - **Width**: 20 mm to 200 mm (0.75" to 8") - **Tolerance**: ±1% on thickness, ±2% on width - **Edge Condition**: As-rolled, milled, or machined edges **Available Conditions:** - **Solution Treated**: Optimal for machining (Soft Condition) - **Aged**: Full mechanical properties (Hard Condition) - **Stress Relieved**: For improved stability --- ### 6. Applications **Round Bar Applications:** - Aerospace fasteners and bolts - Engine mounting components - Landing gear parts - Surgical implant components - High-strength shafts and pins **Flat Bar Applications:** - Structural supports in aerospace - Medical device frames - Specialized machinery components - Defense system structural parts - High-stress bracket applications **Industry Applications:** - **Aerospace**: Critical flight components, engine parts - **Medical**: Orthopedic implants, surgical tools - **Defense**: Missile components, weapon systems - **Industrial**: High-strength fasteners, valve parts --- ### 7. International Standards | Standard Type | Standard Number | Specification | |---------------|-----------------|---------------| | **UNS** | R30159 | Material designation | | **AMS** | 5842 | Bar and Forgings | | **ASTM** | F562 | Wrought Cobalt-Nickel Alloy | | **ISO** | 5832-6 | Implants for Surgery | | **ASME** | - | Code Case Applications | --- ### 8. Machining & Fabrication **Machining Characteristics:** - **Machinability Rating**: 20% (compared to 1112 steel) - **Tool Materials**: Carbide recommended for production - **Cutting Speeds**: 10–15 m/min for roughing operations - **Feed Rates**: 0.1–0.2 mm/rev depending on operation - **Coolant**: Required for all heavy machining operations **Forming & Welding:** - **Hot Working**: 1040–1150°C (1900–2100°F) - **Cold Working**: Good in solution-treated condition - **Welding Processes**: Not generally recommended - **Special Techniques**: Resistance and friction welding possible **Heat Treatment:** - **Solution Treatment**: 1040–1065°C (1900–1950°F) - **Aging Treatment**: 650–760°C (1200–1400°F) - Multistage - **Quenching**: Water quench after solution treatment - **Aging Cycles**: Custom cycles for specific properties --- ### 9. Quality Assurance **Standard Testing:** - Chemical analysis by optical emission spectroscopy - Tensile testing at room temperature - Hardness testing (Rockwell C scale) - Macro-etch testing for soundness **Additional Testing Available:** - Ultrasonic examination per ASTM A388 - Microstructural evaluation - Stress rupture testing - Fatigue and fracture toughness testing --- ### 10. Technical Advantages - **Ultra-high strength** with maintained toughness - **Excellent fatigue performance** in cyclic loading - **Good corrosion resistance** in various environments - **Superior strength-to-weight ratio** - **Maintains mechanical properties** at elevated temperatures - **Proven reliability** in life-critical applications --- ### 11. Special Considerations **Material Handling:** - Protect from contamination during storage - Handle with clean gloves to prevent surface damage - Store in dry, controlled environment **Processing Notes:** - Proper heat treatment essential for optimal properties - Machining should be completed before final aging - Stress relief may be required after heavy machining --- **Note:** MP159 Round Bar and Flat Bar products offer exceptional performance for the most demanding high-strength applications. The material requires specialized processing and heat treatment to achieve its renowned properties. Consult with our technical team for specific application recommendations and processing guidance.

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 2263 gallon liquid totes Special package is available on request.