Alloy 77，Nilomag 77 Strip，,E FORU

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

### **Product Datasheet: Alloy 77 / Nilomag 77 Strip** **Alloy 77** (commonly known as **Nilomag 77**) is a premium nickel-chromium-iron alloy designed for superior performance in high-temperature and corrosive environments. In its strip form, this alloy combines exceptional resistance to oxidation and carburization with excellent forming characteristics and precise dimensional tolerances. **Alloy 77 Strip** is the material of choice for applications requiring thin, durable, and highly reliable components in extreme thermal conditions. This datasheet outlines the specifications for the strip product form, ideal for precision fabrication and automated production processes. --- #### **1. Chemical Composition (Typical % by Weight)** The composition is meticulously controlled to ensure consistent performance and fabricability in thin sections. | 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 Strip is supplied in a cold-rolled and annealed condition, offering an optimal balance of strength and ductility for forming operations. **Physical Properties:** * **Density:** 8.26 g/cm³ (0.298 lb/in³) * **Melting Range:** ~1371°C - 1427°C (~2500°F - 2600°F) * **Specific Heat (20°C):** 450 J/kg·K * **Thermal Conductivity:** 12.5 W/m·K (at 100°C) * **Mean Coefficient of Thermal Expansion (20-1000°C):** 16.0 x 10⁻⁶ /K **Mechanical Properties (Annealed Condition):** * **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 * **Spring Temper:** Available upon request for applications requiring higher strength and spring properties. --- #### **3. Product Applications** The thin, precise nature of Alloy 77 Strip makes it suitable for a range of specialized, often high-volume, fabricated components. * **Thermocouple Sheaths & Protection Tubes:** Formed and welded into thin-walled tubes for fast response times and excellent protection. * **Electrical and Electronic Components:** Used in resistors, heating elements, and other components requiring stable electrical properties at high temperatures. * **Spacers and Shims:** Providing precise separation or alignment in high-temperature assemblies. * **Bellows and Flexible Seals:** Manufactured into thin, corrugated components that absorb thermal expansion in exhaust systems and furnaces. * **Custom Stampings and Washers:** High-speed production of small, complex parts for furnace fixtures and heat treatment racks. * **Light-Gauge Furnace Liners & Radiation Shields:** Used in applications where weight and space are critical constraints. --- #### **4. International Standards & Specifications** Alloy 77 Strip conforms to international standards governing flat-rolled products, with a focus on strip and thin sheet specifications. | Standard | Material Number | UNS Number | Product Form | | :--- | :--- | :--- | :--- | | **ASTM B168 / ASME SB168** | - | **N06003** | Plate, Sheet, and Strip | | **ASTM B906** | - | **N06003** | General Specification for Flat-Rolled Nickel and Nickel Alloys | | **DIN 17742** | **2.4631** | - | Strip (NiCr15Fe) | | **EN 10095** | **NiCr15Fe** (Similar) | - | Heat resisting steels and nickel alloys | *The distinction between sheet and strip is often based on thickness and coilability, with "strip" typically referring to thinner, coiled product.* --- #### **5. Key Advantages of Alloy 77 Strip** * **Precision Gauge and Finish:** Supplied with tight thickness tolerances and a superior, uniform surface finish, ideal for precision stamping and forming. * **Excellent Formability:** Can be readily deep-drawn, stamped, bent, and roll-formed into complex shapes without cracking. * **Consistent High-Temperature Performance:** Maintains oxidation resistance and strength in continuous service up to 1150°C (2100°F). * **Outstanding Weldability:** Can be seamlessly welded using all standard techniques, including TIG, laser, and resistance welding. * **Cost-Effectiveness for Mass Production:** The strip form is optimized for high-volume, automated manufacturing of small components, reducing waste and production time. **Conclusion:** Alloy 77 (Nilomag 77) Strip offers unparalleled versatility for engineers and fabricators designing precision components for high-temperature systems. Its combination of superior metallurgical properties, precise dimensions, and excellent fabricability makes it an essential material for advancing the performance and reliability of thermal processing and electronic applications. --- **For detailed information on available strip widths, thickness ranges, tempers, and custom slitting services, 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 2788 gallon liquid totes Special package is available on request.