Alloy 188,Udimet 188 Wire,UNS R30188,E FORU

British Specs:，American Specs: AMS 5608 Sheet, Strip and Plate AMS 5801 Welding Wire，German Specs:

**Technical Data Sheet: Alloy 188 / Udimet 188 Wire / UNS R30188** **Cobalt-Chromium-Nickel-Tungsten Superalloy Wire Products** --- ### **1. Product Overview** Alloy 188 Wire (commercially known as Udimet 188 Wire or Haynes 188 Wire, UNS R30188) is a premium cobalt-based superalloy supplied in wire form for high-temperature applications requiring exceptional strength and environmental resistance. This product maintains excellent mechanical properties and oxidation resistance at temperatures up to **1100°C (2012°F)**, making it ideal for welding, fastening, and component manufacturing in extreme environments. --- ### **2. Chemical Composition (Weight %)** | Element | Content (%) | Key Characteristics | |---------|-------------|---------------------| | Cobalt (Co) | Balance | High-temperature matrix stability | | Chromium (Cr) | 20.0-24.0 | Oxidation & sulfidation resistance | | Nickel (Ni) | 20.0-24.0 | Austenitic structure stabilization | | Tungsten (W) | 13.0-15.0 | Solid-solution strengthening | | Lanthanum (La) | 0.03-0.12 | Oxide scale adhesion improvement | | Iron (Fe) | ≤3.0 | Residual element | | Manganese (Mn) | ≤1.25 | Hot workability enhancement | | Silicon (Si) | ≤0.20 | Residual element | | Carbon (C) | 0.05-0.15 | Carbide strengthening | | Boron (B) | ≤0.015 | Grain boundary reinforcement | --- ### **3. Physical Properties** | Property | Value | |----------|-------| | Density | 9.13 g/cm³ | | Melting Range | 1330-1380°C | | Thermal Conductivity | 10.1 W/m·K at 100°C | | Coefficient of Thermal Expansion | 12.3 μm/m·°C (20-100°C) | | Electrical Resistivity | 1.02 μΩ·m | | Magnetic Permeability | Essentially non-magnetic | --- ### **4. Mechanical Properties** **Standard Wire Properties (Annealed Condition):** - **Tensile Strength:** 895-1100 MPa (130-160 ksi) - **Yield Strength (0.2% Offset):** 415-550 MPa (60-80 ksi) - **Elongation:** 35-50% - **Reduction of Area:** 50-65% - **Hardness:** 70-90 HRB **Special Tempers Available:** - **Soft Annealed:** Maximum formability - **Half-Hard:** Balanced strength and ductility - **Full-Hard:** Maximum strength for spring applications **Elevated Temperature Performance:** - **Continuous Service:** Up to 1100°C - **Stress Rupture Strength:** 48 MPa at 980°C/100h - **Excellent creep resistance** maintained to 1100°C --- ### **5. Product Specifications** **Wire Size Range:** - **Diameter:** 0.1 mm to 6.0 mm (0.004" to 0.236") - **Tolerance:** ±0.005mm for fine wire, ±0.02mm for heavy wire - **Spool Sizes:** 5kg to 100kg standard **Available Forms:** - **Bright Finish:** Smooth, oxide-free surface - **Pickled Finish:** Matte surface for improved adhesion - **Coated Variants:** Special coatings available **Packaging Options:** - Plastic or wooden spools - Protective coil packaging - Straight lengths (1-3 meters) --- ### **6. Applications** **Welding & Fabrication:** - Welding electrodes and rods - GTAW, GMAW, and SAW wire - Cladding and hardfacing applications - Component repair and maintenance **Fastening & Assembly:** - High-temperature fasteners - Spring wire for elevated temperature service - Safety wiring for aerospace applications - Threaded components and pins **Industrial Components:** - Wire mesh and screening - Heating element supports - Thermocouple wires - Furnace hangers and fixtures **Specialized Applications:** - Medical device components - Aerospace control cables - Nuclear component fabrication --- ### **7. International Standards** | Standard Type | Standard Number | Specification | |---------------|-----------------|---------------| | UNS | R30188 | Material designation | | ASTM | B572 | Rod and Bar (wire applications) | | AWS | A5.13 | Welding Electrode and Rod Specification | | AMS | 5803 | Bar, Forgings, and Rings | | MIL | MIL-DTL-5066 | Welding Wire, Cobalt Base | | EN/DIN | 2.4684 | European designation | --- ### **8. Fabrication Characteristics** **Forming & Processing:** - Excellent cold forming in annealed condition - Predictable springback characteristics - Good weldability with matching filler metal - Suitable for all conventional welding processes **Heat Treatment:** - **Solution Annealing:** 1230°C (2250°F) with rapid cooling - **Stress Relieving:** 870-900°C (1600-1650°F) as required - **Aging Treatments:** Available for specific property enhancement **Surface Preparation:** - Degreasing and cleaning standard - Pickling for oxide removal - Special surface treatments available --- ### **9. Quality Assurance** **Standard Testing:** - Dimensional verification - Surface quality inspection - Chemical analysis by lot - Mechanical testing per specification - Spool integrity checking **Special Testing Available:** - Weld testing and certification - High-temperature performance testing - Microstructural examination - Non-destructive testing --- ### **10. Technical Advantages** - **Consistent diameter control** for automated processes - **Superior high-temperature strength** maintenance - **Excellent oxidation resistance** in extreme environments - **Good formability** for complex component manufacturing - **Reliable performance** in critical applications - **Versatile applications** across multiple industries --- ### **11. Storage & Handling** **Storage Conditions:** - Dry, controlled environment - Protection from mechanical damage - Avoid contamination during handling **Packaging Standards:** - Clearly labeled spools and packages - Material certification included - Traceability maintained throughout --- **Note:** All wire products are supplied with complete material certification and traceability. Custom sizes, special tempers, and specific packaging requirements are available upon request. Consult with our technical team for application-specific recommendations and welding procedure specifications.

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 2247 gallon liquid totes Special package is available on request.