Alloy 230,Haynes 230 Bar(Round bar, Flat bar),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 Bar / UNS N06230** **Nickel-Chromium-Tungsten-Molybdenum Superalloy - Round Bar & Flat Bar Products** --- ### **1. Product Overview** Alloy 230 Bar (commercially known as **Haynes 230 Bar**, UNS N06230) is supplied in both **round bar** and **flat bar** configurations, providing versatile manufacturing solutions for high-temperature applications. These products maintain exceptional mechanical strength and oxidation resistance at temperatures up to **1200°C (2192°F)**, offering excellent machinability and fabricability for critical components in extreme environments. --- ### **2. Chemical Composition (Weight %)** | Element | Content (%) | Key Characteristics | |---------|-------------|---------------------| | Nickel (Ni) | Balance | Austenitic matrix formation | | 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 | Hot workability | | Silicon (Si) | ≤0.40 | Residual element | | Aluminum (Al) | 0.20-0.50 | Oxidation resistance | | Carbon (C) | 0.05-0.15 | Carbide strengthening | | Lanthanum (La) | 0.005-0.050 | Oxide scale adhesion | | Boron (B) | 0.001-0.010 | Grain boundary strength | --- ### **3. Physical Properties** | Property | Value | |----------|-------| | Density | 8.97 g/cm³ (0.324 lb/in³) | | Melting Range | 1330-1380°C (2426-2516°F) | | Thermal Conductivity | 11.6 W/m·K at 100°C | | Coefficient of Thermal Expansion | 12.4 μm/m·°C (20-100°C) | | Electrical Resistivity | 1.24 μΩ·m at 25°C | | Magnetic Permeability | Essentially non-magnetic | --- ### **4. Mechanical Properties** **Room Temperature Properties (Solution Annealed):** - **Tensile Strength:** 795 MPa min (115 ksi min) - **Yield Strength (0.2% Offset):** 345 MPa min (50 ksi min) - **Elongation:** 40% min - **Reduction of Area:** 50% min - **Hardness:** 85-100 HRB **Elevated Temperature Performance:** - **Stress Rupture Strength:** 55 MPa at 980°C for 100 hours - **Creep Strength:** 40 MPa at 1000°C for 1000 hours - **Maximum Service Temperature:** 1200°C continuous - **Excellent thermal fatigue resistance** --- ### **5. Product Specifications** **Round Bar Specifications:** - **Diameter Range:** 5 mm to 300 mm (0.187" to 12") - **Tolerance:** h8/h9 standard - **Surface Finish:** Hot-rolled, turned, ground, or polished - **Straightness:** Standard commercial, precision available **Flat Bar Specifications:** - **Thickness:** 5 mm to 100 mm (0.187" to 4") - **Width:** 20 mm to 300 mm (0.75" to 12") - **Tolerance:** ±1% on thickness, ±2% on width - **Edge Condition:** As-rolled, milled, or machined edges **Available Conditions:** - Solution Annealed (optimal for machining) - Hot Finished - Stress Relieved --- ### **6. Applications** **Round Bar Applications:** - Machined turbine seals and rings - High-temperature fasteners and bolts - Valve components for process industries - Nuclear reactor control rod guides - Heat treatment fixture components **Flat Bar Applications:** - Furnace rail systems and supports - Heat exchanger structural members - Combustion chamber brackets - Process industry support frames - Aerospace structural components **Industry Applications:** - **Aerospace:** Engine components, exhaust systems - **Power Generation:** Gas turbine parts, boiler components - **Industrial:** Heat treating fixtures, chemical processing - **Nuclear:** Reactor components, fuel handling systems --- ### **7. International Standards** | Standard Type | Standard Number | Specification | |---------------|-----------------|---------------| | UNS | N06230 | Material designation | | ASTM | B572 | Rod and Bar Specification | | AMS | 5876 | Bar and Forgings | | ASME | SB-572 | Pressure Component Applications | | EN/DIN | 2.4733 | European designation | | ISO | 9723 | Aerospace Applications | --- ### **8. Machining & Fabrication** **Machining Characteristics:** - **Machinability Rating:** 30% (compared to 1112 steel) - **Tool Materials:** Carbide recommended - **Cutting Speeds:** 10-15 m/min for roughing - **Feed Rates:** 0.1-0.3 mm/rev - **Coolant:** Required for heavy machining **Forming & Welding:** - **Hot Working Temperature:** 1170-1230°C (2140-2250°F) - **Cold Working:** Good in annealed condition - **Welding Processes:** GTAW, GMAW, SMAW - **Filler Metal:** AWS A5.14 ERNiCrWMo-1 **Heat Treatment:** - **Solution Annealing:** 1230°C ± 15°C - **Rapid Cooling:** Air or water quench - **Stress Relieving:** 870-900°C as required --- ### **9. Quality Assurance** **Standard Testing:** - Chemical analysis certification - Tensile testing at room temperature - Hardness testing - Dimensional verification **Additional Testing Available:** - Ultrasonic examination - Macro-etch testing - Elevated temperature testing - Microstructural evaluation --- ### **10. Technical Advantages** - **Superior high-temperature strength** up to 1200°C - **Exceptional oxidation resistance** in cyclic conditions - **Excellent long-term thermal stability** - **Good fabricability** for complex components - **Consistent properties** across all product sizes - **Proven performance** in critical applications --- ### **11. Packaging & Identification** **Standard Packaging:** - Protected against mechanical damage - Clear identification and labeling - Material certification included - Traceability maintained **Certification:** - Mill Test Certificate EN 10204 3.1/3.2 - Chemical and mechanical test reports - Heat treatment records - Origin certification --- **Note:** Haynes 230 Round Bar and Flat Bar products offer exceptional high-temperature performance for critical applications across multiple industries. The consistent quality and mechanical properties ensure reliable performance in the most demanding environments. Consult with our technical team for specific application recommendations and fabrication 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 2250 gallon liquid totes Special package is available on request.