Alloy 77，Nilomag 77 Sheet，,E FORU

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

### **Product Datasheet: Alloy 77 / Nilomag 77 Sheet & Strip** **Alloy 77** (also known under the trade name **Nilomag 77**) is a high-performance nickel-chromium-iron alloy renowned for its exceptional resistance to oxidation and carburization at elevated temperatures. In its sheet and strip form, this material offers an ideal combination of high-temperature strength, superb fabricability, and excellent surface quality, making it perfect for forming into critical components for thermal processing equipment. This datasheet provides detailed specifications for **Alloy 77 Sheet**, a versatile product form designed for demanding applications where reliability and longevity are paramount. --- #### **1. Chemical Composition (Typical % by Weight)** The precise chemical composition is the foundation of Alloy 77's superior performance. | 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 Sheet retains excellent mechanical properties and is supplied in an annealed condition to optimize formability. **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 (Room Temperature - 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 --- #### **3. Product Applications** The sheet and strip form of Alloy 77 is extensively used in fabricating components that require a combination of high-temperature resistance and complex geometries. * **Furnace Muffles and Retorts:** Formed into protective chambers for atmosphere heat treatment. * **Heat Treatment Baskets, Trays, and Fixtures:** Fabricated into custom shapes to hold parts during processes like carburizing, brazing, and sintering. * **Combustion Chambers & Liners:** Used in high-temperature furnaces and thermal systems. * **Heat Exchanger Components:** Fabricated into parts for recuperators and other high-temperature gas-to-gas heat exchangers. * **Reflector Plates & Radiation Shields:** Utilizing its stability to reflect heat and protect sensitive furnace areas. * **Expansion Bellows:** Formed into flexible components that absorb thermal expansion in hot gas ducting. --- #### **4. International Standards & Specifications** Alloy 77 Sheet and Strip conforms to the following key international standards, ensuring consistent quality and performance. | 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 UNS N06003 and ASTM B168 specifications are the most widely recognized for sheet products.* --- #### **5. Key Advantages of Alloy 77 Sheet** * **Superior Fabricability:** Excellent for shearing, punching, deep drawing, spinning, and welding, allowing for the creation of complex components. * **Excellent Surface Finish:** Supplied with a uniform, scale-free surface ideal for high-temperature service and further processing. * **Outstanding Oxidation Resistance:** Provides long service life in continuous operation up to 1150°C (2100°F). * **High Resistance to Carburization & Nitriding:** Maintains integrity and avoids embrittlement in carbon-rich and nitrogenous atmospheres. * **Consistent High-Temperature Strength:** Resists creep and sagging under load, ensuring dimensional stability. **Conclusion:** Alloy 77 (Nilomag 77) Sheet is the engineered solution for fabricators and OEMs who require a durable, formable, and high-performance material for critical high-temperature applications. Its unmatched combination of properties makes it a cost-effective choice for extending equipment life and improving process reliability. --- **For detailed information on available sheet thicknesses, width tolerances, and specific fabrication recommendations, please consult our technical team.**

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 2787 gallon liquid totes Special package is available on request.