Alloy 77，Nilomag 77 Wire，,E FORU

British Specs:，American Specs: AMS 6519 Bar, Tube, Forging，German Specs:

**Product Datasheet: Alloy 77 / Nilomag 77 Wire** **Alloy 77** (commercially known as **Nilomag 77**) is a high-performance nickel-chromium-iron alloy specifically engineered for exceptional oxidation and carburization resistance at elevated temperatures. When manufactured in wire form, this alloy combines its inherent high-temperature stability with excellent ductility and consistent dimensional precision, making it ideal for specialized applications requiring formed, wound, or welded high-temperature components. This datasheet provides detailed specifications for Alloy 77 Wire, a versatile product form designed for both functional and structural use in extreme thermal environments. --- ### **1. Chemical Composition (Typical % by Weight)** The chemical composition is precisely controlled to ensure optimal performance in drawn wire form. | Element | Content (%) | | :--- | :--- | | Nickel (Ni) | Balance (~76.0 min) | | Chromium (Cr) | 14.0 - 17.0 | | Iron (Fe) | 6.0 - 10.0 | | Manganese (Mn) | 1.0 max | | Copper (Cu) | 0.20 max | | Silicon (Si) | 0.20 - 0.60 | | Carbon (C) | 0.10 max | | Sulfur (S) | 0.015 max | --- ### **2. Key Physical & Mechanical Properties** Alloy 77 Wire is supplied in various tempers (annealed or hard-drawn) to suit specific application requirements. **Physical Properties:** * **Density:** 8.26 g/cm³ (0.298 lb/in³) * **Melting Range:** ~1371°C - 1427°C (~2500°F - 2600°F) * **Thermal Conductivity:** 12.5 W/m·K (at 100°C) * **Mean Coefficient of Thermal Expansion (20-1000°C):** 16.0 x 10⁻⁶ /K * **Electrical Resistivity:** ~1.10 μΩ·m **Mechanical Properties (Annealed Condition - Typical):** * **Tensile Strength:** 550 - 690 MPa (80 - 100 ksi) * **Yield Strength (0.2% Offset):** 240 MPa min (35 ksi min) * **Elongation (% in 2 inches):** 30% min * **Hardness (Rockwell B):** 65 - 85 HRB --- ### **3. Product Applications** Alloy 77 Wire is utilized in a diverse range of high-temperature applications where its formability and resilience are critical. * **Welding Wire:** Used as filler metal for joining Alloy 77 components and for cladding/overlaying in corrosive environments. * **Heating Elements:** Wound into coils for low-watt-density heating elements in industrial furnaces. * **Fasteners & Pins:** Manufactured into custom high-temperature rivets, pins, and clips for furnace fixtures. * **Woven Mesh & Textiles:** Woven into high-temperature filter mesh, conveyor belts, and thermal radiation shields. * **Springs & Formed Components:** Fabricated into springs, clips, and other formed parts that must retain elasticity and strength at elevated temperatures. * **Thermocouple Wires & Sheath Repair:** Used in the construction and repair of thermocouple assemblies. --- ### **4. International Standards & Specifications** Alloy 77 Wire conforms to international standards governing nickel-alloy wire products. | Standard | Material Number | UNS Number | Product Form | | :--- | :--- | :--- | :--- | | **ASTM B166 / ASME SB166** | - | **N06003** | Nickel-Chromium-Iron Alloy Rod, Bar, and Wire | | **AWS A5.14** | **ERNiCr-3** (Similar) | **N06003** | Nickel & Nickel-Alloy Bare Welding Electrodes & Rods | | **DIN 17742** | **2.4631** | - | Wire (NiCr15Fe) | | **EN 10095** | **NiCr15Fe** (Similar) | - | Heat resisting steels and nickel alloys | --- ### **5. Key Advantages of Alloy 77 Wire** * **Superior High-Temperature Performance:** Maintains oxidation resistance and structural integrity in continuous service up to 1150°C (2100°F). * **Excellent Fabricability:** Can be easily wound, coiled, formed, and welded using standard techniques, allowing for complex component design. * **Consistent Quality & Surface Finish:** Produced with tight diameter tolerances and a smooth, scale-free surface ideal for automated processing. * **Outstanding Carburization Resistance:** The high nickel content provides superior resistance to embrittlement in carbon-rich atmospheres. * **Versatile Tempers Available:** Supplied in annealed (soft) condition for maximum formability or hard-drawn for higher strength and spring properties. **Conclusion:** Alloy 77 (Nilomag 77) Wire provides designers and engineers with a highly adaptable and reliable material solution for critical high-temperature applications. Its unique combination of metallurgical properties and physical form makes it indispensable for creating durable, high-performance components in the thermal processing, power generation, and chemical industries. --- **For detailed information on available wire diameters, spooling options, temper selection, and welding procedure specifications, please contact our technical sales department.**

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 2793 gallon liquid totes Special package is available on request.