Alloy 330，Incoloy 330 Rod，,E FORU

British Specs:，American Specs: AMS 5716 Sheet and Strip，German Specs:

### **Product Introduction: Alloy 330 / Incoloy 330 Rod (UNS N08330)** **Alloy 330 Rod** is a robust, high-temperature nickel-iron-chromium alloy supplied in a solid bar form. Known for its exceptional resistance to oxidation, carburization, and thermal cycling, this product is the primary stock material for machining critical components used in industrial furnaces and high-temperature processing equipment. Supplied in hot-finished or cold-drawn and annealed conditions, Alloy 330 rod offers excellent machinability and strength, making it the ideal starting point for fabricating fixtures, brackets, shafts, and fasteners that must withstand temperatures up to 2200°F (1200°C) without significant degradation. --- ### **Chemical Composition (Weight %)** The composition is optimized for high-temperature stability and the formation of a protective oxide layer. | Element | Content (%) | Role in the Alloy | | :--- | :--- | :--- | | **Nickel (Ni)** | 34.0 - 37.0 | Confers fundamental resistance to oxidation and carburization; stabilizes the austenitic structure. | | **Chromium (Cr)** | 17.0 - 20.0 | Forms a protective, self-healing chromium oxide scale (Cr₂O₃) for resistance to oxidizing atmospheres. | | **Iron (Fe)** | Balance | The base element of the alloy. | | **Silicon (Si)** | 0.75 - 1.50 | A critical addition that significantly enhances resistance to carburization and oxidation in cyclic service. | | **Manganese (Mn)** | ≤ 2.00 | Aids in hot workability and provides some sulfur tolerance. | | **Carbon (C)** | ≤ 0.08 | Contributes to high-temperature strength. | | **Phosphorus (P)** | ≤ 0.030 | Impurity, controlled. | | **Sulfur (S)** | ≤ 0.030 | Impurity, kept low to prevent hot shortness during forging. | --- ### **Physical & Mechanical Properties** The properties below are typical for annealed Alloy 330 rod. Cold-drawing can increase strength and hardness. | Property | Value / Description | | :--- | :--- | | **Density** | 8.0 g/cm³ (0.289 lb/in³) | | **Melting Point** | 1371 - 1427 °C (2500 - 2600 °F) | | **Thermal Expansion** | 14.4 μm/m·°C (20-300°C) | | **Thermal Conductivity** | 12.5 W/m·K (at 100°C) | | **Modulus of Elasticity** | 196 GPa (28.4 x 10⁶ psi) at 21°C | | **Tensile Strength (Annealed)** | 620 MPa (90 ksi) min | | **Yield Strength (0.2% Offset, Annealed)** | 310 MPa (45 ksi) min | | **Elongation (Annealed)** | 30% min | | **Hardness (Annealed)** | ≤ 85 HRB | **Key Characteristic:** Alloy 330 rod retains a significant portion of its room-temperature strength at elevated temperatures, which is crucial for loaded components in hot zones. --- ### **International Standards for Rod & Bar** Alloy 330 rod is produced to meet strict international standards to ensure quality and performance. | Standard Body | Standard Number | Title (Scope) | | :--- | :--- | :--- | | **ASTM** | B535 | *Standard Specification for Nickel-Iron-Chromium-Silicon Alloys (UNS N08330 and N08332) Rod, Bar, and Wire* | | **ASME** | SB-535 | ASME Boiler and Pressure Vessel Code version of ASTM B535. | | **UNS** | **N08330** | Unified Numbering System designation. | | **EN (DIN)** | 10095 | *Heat resisting steels and nickel alloys* (Designation: X 15 NiCrSi 36 16 or 1.4886) | **Common Conditions:** * **Hot Finished:** For larger diameters, typically with a decarburized surface. * **Cold Drawn & Annealed:** For smaller diameters, offering better surface finish and tighter dimensional tolerances. * **Centerless Ground:** For precise diameter and a superior surface finish for critical applications. --- ### **Product Applications** Alloy 330 rod is primarily used as raw material for machining components that serve in high-temperature environments. Key applications include: 1. **Furnace Fixturing and Components:** * **Baskets, Trays, and Grids:** Machined or fabricated from rod to hold parts during heat treatment processes like carburizing, annealing, and brazing. * **Jigs and Hangers:** Used to suspend components in furnaces, resisting creep and distortion under load at high temperatures. * **Radiant Tube Supports & Hangers:** Critical for supporting furnace internals. 2. **Fasteners and Hardware:** * **Nuts, Bolts, and Studs:** Machined from rod to create high-temperature fasteners for assembling furnace sections, reactors, and flanges where standard stainless steels would fail due to scaling or loss of strength. * **Pins and Spacers:** For aligning and spacing components in high-temperature assemblies. 3. **Process Industry Components:** * **Thermowells:** Machined from rod to protect temperature sensors in aggressive high-temperature process streams. * **Retorts and Muffle Tubes:** For smaller, batch-type heat treatment furnaces. * **Transfer Rolls:** In ceramic and glass processing lines. 4. **Valve and Pump Parts:** * **Shafts, Spindles, and Stems:** For equipment handling hot gases or corrosive media at elevated temperatures. --- ### **Machining and Fabrication** * **Machinability:** Alloy 330 rod has a machinability rating of approximately **40%** (compared to 100% for a free-machining steel like 1212). It is gummy and work-hardens rapidly. * **Recommended Practice:** Use slow speeds, heavy feeds, sharp tooling, and positive rake angles. Rigid setups and powerful equipment are essential. * **Welding:** Excellent weldability using Gas Tungsten Arc Welding (GTAW/TIG) and Gas Metal Arc Welding (GMAW/MIG). Common filler metals include AWS ERNiCr-3 (Alloy 82) or the matching ERNiCrSi-1. ### **Other / Similar Alloys in Rod Form** * **RA 330®:** A widely recognized trademark for a high-quality version of UNS N08330. * **Alloy 800H/HT (UNS N08810/N08811):** Offers superior creep rupture strength above 1100°F (595°C) but is generally less resistant to carburization than 330. * **Alloy 601 (UNS N06601):** Higher chromium and aluminum content for superior oxidation resistance; often used for radiant tubes. * **Alloy 314 (UNS S31400):** A high-chromium, high-silicon stainless steel offering good oxidation resistance at a lower cost, but with lower high-temperature strength. **Conclusion:** **Alloy 330 / Incoloy 330 Rod** is a fundamental material for high-temperature manufacturing and maintenance. Its availability in various diameters and conditions provides engineers and machinists with a versatile and reliable stock to produce durable components that ensure long service life, reduced downtime, and operational integrity in the most demanding thermal environments.

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 2704 gallon liquid totes Special package is available on request.