INCOLOY Alloy 945X Nickel-Iron-Chromium Alloy,NACE MR0175 / ISO 15156-3，1

### **Product Introduction: INCOLOY® Alloy 945X Nickel-Iron-Chromium Alloy** **INCOLOY® Alloy 945X** is an advanced precipitation-hardenable nickel-iron-chromium alloy specifically engineered for superior performance in extreme oil and gas applications, particularly in severe sour service environments containing H₂S, CO₂, and high chloride concentrations. This enhanced variant builds upon the successful foundation of INCOLOY 945 with optimized chemistry for improved strength, corrosion resistance, and manufacturing characteristics. The alloy is fully compliant with NACE MR0175/ISO 15156-3 standards, making it particularly suitable for critical components in demanding HPHT (High-Pressure High-Temperature) wells, deepwater applications, and aggressive sour service conditions where maximum reliability and performance are required. --- ### **Chemical Composition** | Element | Content (%) | |---------|-------------| | **Nickel (Ni)** | 44.0 - 46.0 | | **Chromium (Cr)** | 20.0 - 23.0 | | **Iron (Fe)** | Balance | | **Molybdenum (Mo)** | 3.0 - 4.0 | | **Niobium (Nb)** | 2.5 - 3.5 | | **Titanium (Ti)** | 1.2 - 1.7 | | **Copper (Cu)** | 0.7 - 1.5 | | **Aluminum (Al)** | 0.2 - 0.4 | | **Carbon (C)** | 0.03 max | | **Manganese (Mn)** | 0.5 max | | **Silicon (Si)** | 0.2 max | | **Sulfur (S)** | 0.01 max | --- ### **Physical Properties** | Property | Value | |----------|-------| | **Density** | 8.12 g/cm³ | | **Melting Point** | 1350 - 1400 °C | | **Thermal Conductivity** | 11.8 W/m·K (at 20°C) | | **Electrical Resistivity** | 1.08 μΩ·m | | **Modulus of Elasticity** | 198 GPa | | **Coefficient of Thermal Expansion** | 13.9 μm/m·°C (20-400°C) | | **Specific Heat Capacity** | 465 J/kg·K | | **Magnetic Response** | Essentially non-magnetic | --- ### **Mechanical Properties** **Solution Annealed Condition:** - **Tensile Strength:** 720 - 880 MPa - **Yield Strength (0.2% Offset):** 350 - 500 MPa - **Elongation:** 38 - 48% - **Hardness:** 210 - 260 HB **Aged Condition:** - **Tensile Strength:** 1070 - 1270 MPa - **Yield Strength (0.2% Offset):** 790 - 960 MPa - **Elongation:** 20 - 28% - **Hardness:** 290 - 360 HB --- ### **Key Characteristics & Advantages** 1. **Enhanced Corrosion Resistance** - Superior resistance to sulfide stress cracking (SSC) - Excellent chloride stress corrosion cracking (SCC) resistance - Improved performance in high-chloride, high-H₂S environments - Good resistance to pitting and crevice corrosion 2. **NACE MR0175/ISO 15156-3 Compliance** - Fully certified for sour service applications - Suitable for the most severe H₂S-containing environments - Meets stringent oil and gas industry requirements 3. **Optimized Mechanical Properties** - Enhanced strength-to-weight ratio - Improved toughness and impact resistance - Superior fatigue performance in corrosive environments - Excellent wear and galling resistance 4. **Advanced Manufacturing Characteristics** - Improved weldability and fabricability - Enhanced hot workability - Better machinability in heat-treated condition - Reduced susceptibility to manufacturing defects --- ### **Product Applications** **Oil and Gas Industry:** - HPHT well completion components - Subsea production equipment - Christmas tree and wellhead components - Downhole tubing and casing strings - Valve trims and bodies **Sour Service Applications:** - Production tubing in severe sour fields - Surface equipment in high-H₂S environments - Corrosion-resistant alloy (CRA) completions - Mandrels and hangers for sour service **Specialized Applications:** - Deepwater production components - Arctic environment equipment - Chemical injection systems - High-pressure flow control equipment --- ### **International Standards** | Standard Type | Standard Number | Description | |---------------|-----------------|-------------| | **NACE** | MR0175/ISO 15156-3 | Sour Service Compliance | | **API** | 6A/17D/5CT | Oilfield Equipment Standards | | **ASTM** | B805 | Bar and Billet Specification | | **ASME** | SB-805 | Code Cases | | **DNV** | OS-F101 | Submarine Pipeline Systems | --- ### **Summary** **INCOLOY® Alloy 945X** represents the next generation of nickel-iron-chromium alloys, specifically optimized for the most challenging oil and gas applications. With its enhanced chemical composition and improved mechanical properties, this alloy delivers exceptional performance in severe sour service environments while maintaining full compliance with **NACE MR0175/ISO 15156-3** standards. The alloy's superior combination of high strength, excellent corrosion resistance, and advanced manufacturability makes it an ideal choice for critical components in HPHT wells, deepwater production systems, and aggressive sour service applications. Comprehensive certification to major international standards including NACE, API, ASTM, and DNV ensures consistent quality and reliability, providing engineers with a premium material solution for applications where failure is not an option and maximum performance in corrosive environments is essential for operational safety and economic viability.

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 3356 gallon liquid totes Special package is available on request.