Alloy 230,Haynes 230 ,UNS N06230,E FORU

British Specs:，American Specs:AMS 5878 Sheet, Strip and Plate AMS 5891 Bar and Forgings，German Specs:DIN 17744 No 2.4733,NiCr22W14Mo

**Technical Data Sheet: Alloy 230 / Haynes 230 / UNS N06230** **Nickel-Chromium-Tungsten-Molybdenum Superalloy** --- ### **1. Product Overview** Alloy 230 (commercially known as **Haynes 230**, UNS N06230) is a nickel-chromium-tungsten-molybdenum superalloy designed for high-temperature service up to **1200°C (2192°F)**. It combines exceptional high-temperature strength, outstanding oxidation resistance, excellent long-term thermal stability, and good fabrication characteristics. The alloy is strengthened by a combination of solid solution hardening and carbide precipitation, making it suitable for the most demanding high-temperature applications. --- ### **2. Chemical Composition (Weight %)** | Element | Content (%) | Key Characteristics | |---------|-------------|---------------------| | Nickel (Ni) | Balance | Matrix element, provides austenitic structure | | Chromium (Cr) | 20.0-24.0 | Oxidation and corrosion resistance | | Tungsten (W) | 13.0-15.0 | Solid-solution strengthening | | Molybdenum (Mo) | 1.0-3.0 | Solid-solution strengthening | | Iron (Fe) | ≤3.0 | Residual element | | Cobalt (Co) | ≤5.0 | Residual element | | Manganese (Mn) | ≤0.50 | Controls sulfur | | Silicon (Si) | ≤0.40 | Residual element | | Aluminum (Al) | 0.20-0.50 | Oxidation resistance | | Carbon (C) | 0.05-0.15 | Carbide formation | | Lanthanum (La) | 0.005-0.050 | Oxide scale adhesion | | Boron (B) | 0.001-0.010 | Grain boundary strength | --- ### **3. Physical Properties** | Property | Value | Condition | |----------|-------|-----------| | Density | 8.97 g/cm³ | 25°C | | Melting Range | 1330-1380°C | - | | Thermal Conductivity | 11.6 W/m·K | 100°C | | Coefficient of Thermal Expansion | 12.4 μm/m·°C | 20-100°C | | Electrical Resistivity | 1.24 μΩ·m | 25°C | | Magnetic Permeability | Essentially non-magnetic | - | --- ### **4. Mechanical Properties** **Room Temperature Properties (Annealed Condition):** - **Tensile Strength:** 795 MPa min (115 ksi min) - **Yield Strength (0.2% Offset):** 345 MPa min (50 ksi min) - **Elongation:** 40% min - **Hardness:** 85-100 HRB **Elevated Temperature Performance:** - **Stress Rupture Strength (980°C):** 55 MPa for 100 hours - **Creep Strength (1000°C):** 40 MPa for 1000 hours - **Maximum Service Temperature:** 1200°C continuous - **Excellent structural stability** up to 1150°C --- ### **5. Product Forms & Specifications** **Available Forms:** - Sheet, Strip, and Plate - Bar, Rod, and Wire - Tube and Pipe - Forgings and Rings **Standard Sizes:** - **Sheet/Plate:** 0.5mm to 100mm thickness - **Bar/Rod:** 3mm to 300mm diameter - **Tube/Pipe:** 6mm to 300mm OD --- ### **6. Applications** **Aerospace & Defense:** - Gas turbine combustors - Afterburner components - Exhaust system parts - Rocket engine components **Industrial Processing:** - Heat treatment furnace components - Radiant tubes and retorts - Heat exchangers and reformers - Chemical processing equipment **Power Generation:** - Gas turbine transition ducts - Combustion liners and seals - Heat recovery systems - Nuclear reactor components **Other Applications:** - Thermal processing equipment - Pollution control systems - High-temperature fixtures - Glass manufacturing components --- ### **7. International Standards** | Standard Type | Standard Number | Specification | |---------------|-----------------|---------------| | UNS | N06230 | Material designation | | ASTM | B435 | Sheet, Plate, and Strip | | ASTM | B572 | Rod and Bar | | ASTM | B622 | Seamless Pipe and Tube | | AMS | 5878 | Sheet, Strip, and Plate | | AMS | 5876 | Bar and Forgings | | EN/DIN | 2.4733 | European designation | --- ### **8. Fabrication Characteristics** **Welding:** - Excellent weldability using GTAW, GMAW processes - Recommended filler: AWS A5.14 ERNiCrWMo-1 - Post-weld heat treatment generally not required **Forming:** - Good hot and cold forming characteristics - Hot working temperature: 1170-1230°C - Good machinability in annealed condition **Heat Treatment:** - Solution Annealing: 1230°C ± 15°C - Rapid cooling required - Stress relief: 870-900°C --- ### **9. Technical Advantages** - **Superior high-temperature strength** up to 1200°C - **Exceptional oxidation resistance** in cyclic conditions - **Excellent long-term thermal stability** - **Good resistance to carburization and nitridation** - **Maintains ductility** after long-term exposure - **Proven performance** in extreme environments --- ### **10. Quality Assurance** **Standard Testing:** - Chemical analysis certification - Mechanical property testing - Non-destructive examination - Microstructural evaluation **Certification:** - Mill test certificates EN 10204 3.1/3.2 - ASME nuclear certifications available - NADCAP accredited testing --- **Note:** Alloy 230 offers an optimal balance of high-temperature strength, environmental resistance, and fabricability for the most demanding applications. Consult with our technical team for specific application recommendations and technical support.

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 2248 gallon liquid totes Special package is available on request.