Nickel 5900 Nickel Alloy,E FORU

### **Product Introduction: INCONEL® 5900 Nickel-Chromium Alloy** **INCONEL® 5900** is a nickel-chromium alloy specifically designed for applications requiring excellent resistance to oxidation and carburization at high temperatures. This solid-solution strengthened alloy offers outstanding performance in aggressive thermal environments, making it particularly suitable for industrial heating, heat treatment equipment, and thermal processing applications. The alloy's balanced composition provides optimal resistance to scaling and degradation while maintaining good mechanical properties at elevated temperatures. The alloy demonstrates exceptional stability in temperatures up to 1200°C (2192°F) and exhibits excellent resistance to thermal cycling, making it a reliable choice for continuous high-temperature service in demanding industrial applications. --- #### **1. Chemical Composition (Weight %)** The typical chemical composition of INCONEL 5900 is as follows: | Element | Content (%) | Element | Content (%) | |---------|-------------|---------|-------------| | **Nickel (Ni)** | Balance | **Chromium (Cr)** | 27.0 - 31.0 | | **Iron (Fe)** | 7.0 - 11.0 | **Aluminum (Al)** | 0.8 - 1.5 | | **Silicon (Si)** | 0.5 - 1.0 | **Carbon (C)** | 0.05 - 0.15 | | **Manganese (Mn)** | 1.5 max | **Sulfur (S)** | 0.015 max | | **Phosphorus (P)** | 0.03 max | **Other Elements** | 0.50 max | --- #### **2. Physical & Mechanical Properties** **Physical Properties:** | Property | Metric Units | Imperial Units | |----------|-----------------|------| | **Density** | 8.05 g/cm³ | 0.291 lb/in³ | | **Melting Range** | 1350 - 1400 °C | 2462 - 2552 °F | | **Thermal Conductivity** | 12.5 W/m·K | 86.7 Btu·in/hr·ft²·°F | | **Coefficient of Thermal Expansion** | 14.5 μm/m·°C | 8.1 μin/in·°F | | **Specific Heat** | 460 J/kg·K | 0.110 Btu/lb·°F | | **Electrical Resistivity** | 1.15 μΩ·m | 692 Ω·cir mil/ft | | **Modulus of Elasticity** | 205 GPa | 29.7 x 10⁶ psi | **Mechanical Properties (Room Temperature):** | Property | Value | |----------|-----------------| | **Tensile Strength** | 620-760 MPa | 90-110 ksi | | **Yield Strength (0.2% Offset)** | 280-380 MPa | 41-55 ksi | | **Elongation** | 40-50% | | **Hardness (Rockwell B)** | 80-95 HRB | **Elevated Temperature Properties (at 1000°C/1832°F):** | **Tensile Strength** | 120 MPa | 17.4 ksi | | **Creep Rupture Strength (1000h)** | 25 MPa | 3.6 ksi | --- #### **3. Key Characteristics & Product Applications** **Key Characteristics:** - **Excellent Oxidation Resistance**: Outstanding performance in oxidizing atmospheres up to 1200°C - **Good Carburization Resistance**: Suitable for use in carburizing environments - **Thermal Fatigue Resistance**: Excellent performance under thermal cycling conditions - **Good Mechanical Strength**: Maintains structural integrity at high temperatures - **Fabricability**: Can be welded and formed using standard techniques - **Scale Resistance**: Forms protective, adherent oxide scale **Product Applications:** INCONEL 5900 serves critical functions in high-temperature industrial applications: - **Industrial Heating**: - Radiant tubes and furnace muffles - Heat treatment fixtures and baskets - Roller hearth furnace components - Annealing covers and retorts - **Thermal Processing**: - Ceramic kiln components - Glass processing equipment - Powder metallurgy furnaces - Sintering trays and boats - **Chemical Processing**: - Reformer tubes and components - Catalyst support systems - High-temperature reactor internals - Process heating elements - **Power Generation**: - Heat recovery systems - Boiler components - Combustion system parts - Exhaust system components --- #### **4. International Standards & Specifications** INCONEL 5900 complies with the following international standards: **Primary Specifications:** - **ASTM B408**: Nickel-Iron-Chromium Alloy Rod and Bar - **ASTM B409**: Nickel-Iron-Chromium Alloy Plate, Sheet, and Strip - **ASTM B564**: Nickel Alloy Forgings - **UNS N05900**: Unified Numbering System **International Equivalents:** - **EN**: 2.4637 (NiCr29Fe) - **DIN**: 2.4637 - **JIS**: NW 5900 - **ISO**: 6207 (Nickel alloy designations) - **AMS**: 5875 (Aerospace Material Specification) --- #### **Summary of Key Advantages** - **Superior High-Temperature Performance**: Excellent oxidation resistance up to 1200°C - **Proven Reliability**: Established track record in demanding thermal applications - **Good Fabricability**: Suitable for welding, forming, and machining operations - **Thermal Stability**: Maintains properties under prolonged high-temperature exposure - **Versatile Applications**: Suitable for various industrial heating and processing applications - **Comprehensive Standardization**: Meets international quality and performance standards **Technical Note**: INCONEL 5900 exhibits good weldability using gas tungsten arc welding (GTAW) and gas metal arc welding (GMAW) processes with matching filler metals. The alloy work hardens during cold working operations, requiring intermediate annealing at 980-1150°C (1800-2100°F) for severe deformations. For optimal high-temperature performance, a final solution annealing treatment at 1150-1200°C (2100-2190°F) followed by rapid cooling is recommended. The material develops a protective chromium oxide scale during initial heating that provides long-term oxidation protection. Proper cleaning and handling procedures should be maintained to prevent surface contamination that could affect high-temperature performance.

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 3168 gallon liquid totes Special package is available on request.