MP35N,MP35N Bar(Round bar, Flat bar),UNS R30035,E FORU

British Specs:，American Specs:AMS 5844 VIM VAR Bar AMS 5845 VIM VAR Bar AMS 5758 VIM VAR Bar，German Specs:

### Technical Data Sheet: MP35N / MP35N Bar / UNS R30035 **Cobalt-Nickel-Chromium-Molybdenum Superalloy - Round Bar & Flat Bar Products** --- ### 1. Product Overview **MP35N Bar** (UNS R30035) is supplied in both **round bar** and **flat bar** configurations from the advanced cobalt-nickel-chromium-molybdenum superalloy family. These products achieve exceptional mechanical properties through cold working and aging treatments, offering **ultra-high strength** (up to 2200 MPa), excellent corrosion resistance, and non-magnetic characteristics for critical applications in medical, aerospace, and oil and gas industries. --- ### 2. Chemical Composition (Weight %) | Element | Content (%) | Key Characteristics | |---------|-------------|---------------------| | **Cobalt (Co)** | 35.0 | Matrix element providing strength and corrosion resistance | | **Nickel (Ni)** | 35.0 | Austenitic structure and corrosion resistance | | **Chromium (Cr)** | 20.0 | Oxidation and corrosion resistance | | **Molybdenum (Mo)** | 10.0 | Strength enhancement and corrosion resistance | | **Titanium (Ti)** | 1.0 | Precipitation strengthening | | **Iron (Fe)** | ≤ 1.0 | Residual element | | **Manganese (Mn)** | ≤ 0.15 | Residual element | | **Silicon (Si)** | ≤ 0.15 | Residual element | | **Carbon (C)** | ≤ 0.025 | Controlled for carbide formation | --- ### 3. Physical Properties | Property | Value | |----------|-------| | **Density** | 8.43 g/cm³ (0.304 lb/in³) | | **Melting Range** | 1315–1440°C (2400–2625°F) | | **Thermal Conductivity** | 12.9 W/m·K at 100°C | | **Mean CTE (20-100°C)** | 12.8 µm/m·°C | | **Electrical Resistivity** | 1.04 µΩ·m at 25°C | | **Magnetic Permeability** | Essentially non-magnetic (μ < 1.002) | --- ### 4. Mechanical Properties **Solution Annealed Condition:** - **Tensile Strength**: 800–1000 MPa (116–145 ksi) - **Yield Strength (0.2% Offset)**: 380–550 MPa (55–80 ksi) - **Elongation**: 50–60% - **Hardness**: 90–100 HRB **Cold Worked + Aged Condition:** - **Tensile Strength**: 1900–2200 MPa (276–319 ksi) - **Yield Strength (0.2% Offset)**: 1790–2000 MPa (260–290 ksi) - **Elongation**: 8–12% - **Hardness**: 50–55 HRC --- ### 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 Annealed**: Optimal for machining and forming - **Cold Worked**: Various reduction levels available - **Aged**: Full mechanical properties - **Stress Relieved**: For improved stability --- ### 6. Applications **Round Bar Applications:** - Medical implant components - Aerospace fasteners and bolts - Oil field tool joints - Marine hardware components **Flat Bar Applications:** - Surgical instrument frames - Aerospace structural supports - Chemical processing equipment - Specialized machinery components **Industry Applications:** - **Medical**: Orthopedic implants, surgical tools - **Aerospace**: Critical flight components, fasteners - **Oil & Gas**: Downhole tools, valve components - **Marine**: Corrosion-resistant hardware --- ### 7. International Standards | Standard Type | Standard Number | Specification | |---------------|-----------------|---------------| | **UNS** | R30035 | Material designation | | **AMS** | 5844 | 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**: 25% (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:** - **Cold Working**: Excellent in annealed condition - **Hot Working**: 1150–1200°C (2100–2200°F) - **Welding**: Not generally recommended - **Special Techniques**: Resistance welding possible **Heat Treatment:** - **Solution Treatment**: 1010–1065°C (1850–1950°F) - **Aging Treatment**: 480–650°C (900–1200°F) for 4–8 hours - **Quenching**: Water quench after solution treatment --- ### 9. Quality Assurance **Standard Testing:** - Chemical analysis by optical emission spectroscopy - Tensile testing at room temperature - Hardness testing (Rockwell scales) - Macro-etch testing for soundness **Additional Testing Available:** - Ultrasonic examination per ASTM A388 - Microstructural evaluation - Corrosion testing per ASTM standards - Fatigue and fracture toughness testing --- ### 10. Technical Advantages - **Ultra-high strength** with maintained toughness - **Excellent corrosion resistance** in harsh environments - **Non-magnetic properties** - **Good fatigue performance** in cyclic loading - **Biocompatible** for medical applications - **Maintains properties** in sour gas environments - **Proven reliability** in critical applications --- ### 11. Special Considerations **Medical Grade Requirements:** - Enhanced cleanliness standards - Special packaging for sterile applications - Full material traceability - Biocompatibility certification **Processing Recommendations:** - Cold working essential for maximum strength - Machining should be completed before final aging - Proper handling to prevent surface contamination --- **Note:** MP35N Round Bar and Flat Bar products offer exceptional performance for applications requiring ultra-high strength, corrosion resistance, and non-magnetic properties. The material requires specialized processing and proper heat treatment to achieve optimal mechanical 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 2276 gallon liquid totes Special package is available on request.