Nickelvac 606 Nickel Superalloy,AWS Class ERNiCr-3. MIL-E-21562 type RN 82, EN 82.,E FORU

### **Product Introduction: Nickelvac® 606 (ERNiCr-3) Nickel-Chromium Welding Superalloy** **Nickelvac 606 (AWS Class ERNiCr-3)** is a nickel-chromium welding consumable specifically designed for joining nickel-chromium and nickel-chromium-iron alloys. This solid-solution strengthened superalloy wire provides excellent weld metal properties that match or exceed the performance of base metals such as Alloy 600, 601, and 800 series. The alloy is characterized by its superior resistance to oxidation, carburization, and corrosion in high-temperature environments, making it ideal for critical welding applications in aggressive service conditions. As a welding filler metal, Nickelvac 606 produces ductile, crack-resistant welds with good mechanical properties from cryogenic temperatures up to 1150°C (2100°F). Its carefully balanced composition ensures microstructural stability and consistent performance in both as-welded and post-weld heat-treated conditions. --- #### **1. Chemical Composition (Weight %)** The typical chemical composition of Nickelvac 606 per AWS A5.14 and MIL-E-21562 is as follows: | Element | Content (%) | Element | Content (%) | |---------|-------------|---------|-------------| | **Nickel (Ni)** | ≥ 67.0 | **Iron (Fe)** | 3.0 max | | **Chromium (Cr)** | 18.0 - 22.0 | **Manganese (Mn)** | 2.5 - 3.5 | | **Niobium (Nb)** | 2.0 - 3.0 | **Titanium (Ti)** | 0.75 max | | **Carbon (C)** | 0.08 max | **Aluminum (Al)** | 0.50 max | | **Silicon (Si)** | 0.50 max | **Copper (Cu)** | 0.50 max | | **Phosphorus (P)** | 0.03 max | **Sulfur (S)** | 0.015 max | --- #### **2. Physical & Mechanical Properties** **Physical Properties:** | Property | Metric Units | Imperial Units | |----------|-----------------|------| | **Density** | 8.30 g/cm³ | 0.300 lb/in³ | | **Melting Range** | 1375 - 1425 °C | 2507 - 2597 °F | | **Thermal Conductivity** | 12.0 W/m·K | 83.2 Btu·in/hr·ft²·°F | | **Coefficient of Thermal Expansion** | 13.5 μm/m·°C | 7.5 μin/in·°F | | **Electrical Resistivity** | 1.10 μΩ·m | - | **Typical Weld Metal Mechanical Properties:** | Property | Value | |----------|-----------------| | **Tensile Strength** | 550-620 MPa | 80-90 ksi | | **Yield Strength (0.2% Offset)** | 350-410 MPa | 51-59 ksi | | **Elongation** | 30-40% | | **Hardness (Rockwell B)** | 75-85 HRB | **Elevated Temperature Properties (at 870°C/1600°F):** | **Tensile Strength** | 180 MPa | 26 ksi | | **Creep Strength** | 45 MPa | 6.5 ksi | --- #### **3. Key Characteristics & Product Applications** **Key Characteristics:** - **Excellent Weldability**: Smooth arc characteristics with minimal spatter - **Oxidation Resistance**: Superior performance in oxidizing atmospheres up to 1150°C - **Carburization Resistance**: Good resistance to carburizing environments - **Crack Resistance**: Low susceptibility to hot cracking and microfissuring - **Ductile Weld Metal**: Maintains good ductility in as-welded condition - **Corrosion Resistance**: Good performance in various corrosive media **Product Applications:** Nickelvac 606 is widely used for welding high-temperature components: - **Power Generation**: - Boiler tube welding (water walls, superheaters) - Heat exchanger fabrication - Turbine casing repairs - High-temperature piping systems - **Chemical Processing**: - Reactor vessel fabrication - Heater tube welding - Process piping systems - Catalyst support grids - **Petrochemical Industry**: - Furnace tube welding - Reformers and crackers - Heat recovery systems - Pyrolysis equipment - **Aerospace & Nuclear**: - Jet engine component repair - Nuclear reactor internals - Heat treatment fixtures - High-temperature instrumentation --- #### **4. International Standards & Specifications** Nickelvac 606 complies with major international standards: **Welding Consumable Specifications:** - **AWS A5.14**: ERNiCr-3 - **MIL-E-21562**: Type RN 82 - **EN ISO 18274**: S Ni 7062 - **ASME SFA-5.14**: ERNiCr-3 **Base Metal Equivalents:** - **UNS**: N06082 (weld metal) - **EN**: 2.4816 (NiCr20Nb) - **DIN**: 2.4816 **Qualification Standards:** - **ASME Section IX**: QW-492 - **ISO 15614**: Qualification testing - **EN 287**: Welder qualification --- #### **Summary of Key Advantages** - **Proven Performance**: Extensive service history in critical high-temperature applications - **Versatile Application**: Suitable for welding various nickel-chromium alloys - **Excellent Metallurgical Properties**: Crack-resistant welds with good ductility - **High Temperature Capability**: Maintains properties up to 1150°C (2100°F) - **Standard Compliance**: Meets all major international specifications - **Consistent Quality**: Reliable performance across different welding processes **Technical Note**: Nickelvac 606 is suitable for use with GTAW (TIG), GMAW (MIG), and SAW welding processes. The recommended interpass temperature is 150°C (300°F) maximum. Post-weld heat treatment, when required, should be performed at 870-980°C (1600-1800°F) followed by rapid cooling. The niobium content provides protection against micro-fissuring while maintaining good hot cracking resistance. Proper shielding gas protection is essential for optimal results, with argon or argon-helium mixtures recommended for GTAW applications.

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 3159 gallon liquid totes Special package is available on request.