Custom Age 625 PLUS alloy,UNS N07716; NACE MR0175; ASTM B805; AMS 5854,E FORU

### **Product Introduction: Custom Age 625 PLUS® Alloy (UNS N07716)** **Custom Age 625 PLUS® (UNS N07716)** is a nickel-chromium-niobium-molybdenum superalloy specifically engineered to provide superior strength, excellent corrosion resistance, and outstanding mechanical properties at elevated temperatures. This precipitation-hardenable alloy represents an advanced evolution of the widely used Alloy 625, offering significantly higher strength while maintaining excellent corrosion resistance and fabricability. The alloy is particularly distinguished by its compliance with NACE MR0175 standards, making it suitable for sour service applications in the oil and gas industry. The alloy's optimized chemical composition and specialized aging treatment provide an exceptional combination of high strength, excellent fatigue resistance, and superior stress corrosion cracking resistance, making it ideal for demanding applications in aerospace, oil and gas, and chemical processing industries. --- #### **1. Chemical Composition (Weight %)** The typical chemical composition of Custom Age 625 PLUS alloy is as follows: | Element | Content (%) | Element | Content (%) | |---------|-------------|---------|-------------| | **Nickel (Ni)** | Balance | **Niobium (Nb)** | 3.5 - 4.5 | | **Chromium (Cr)** | 20.0 - 23.0 | **Molybdenum (Mo)** | 8.0 - 10.0 | | **Iron (Fe)** | 5.0 max | **Titanium (Ti)** | 1.0 - 1.7 | | **Aluminum (Al)** | 0.35 max | **Carbon (C)** | 0.03 max | | **Manganese (Mn)** | 0.25 max | **Silicon (Si)** | 0.25 max | | **Phosphorus (P)** | 0.015 max | **Sulfur (S)** | 0.015 max | --- #### **2. Physical & Mechanical Properties** **Physical Properties:** | Property | Metric Units | Imperial Units | |----------|-----------------|------| | **Density** | 8.44 g/cm³ | 0.305 lb/in³ | | **Melting Range** | 1350 - 1400 °C | 2460 - 2550 °F | | **Thermal Conductivity** | 10.9 W/m·K | 75.6 Btu·in/hr·ft²·°F | | **Coefficient of Thermal Expansion** | 12.8 μm/m·°C | 7.1 μin/in·°F | | **Specific Heat** | 430 J/kg·K | 0.103 Btu/lb·°F | | **Modulus of Elasticity** | 207 GPa | 30.0 x 10⁶ psi | **Mechanical Properties (Aged Condition):** | Property | Value | |----------|-----------------| | **Tensile Strength** | 1450-1600 MPa | 210-232 ksi | | **Yield Strength (0.2% Offset)** | 1240-1380 MPa | 180-200 ksi | | **Elongation** | 15-25% | | **Hardness (Rockwell C)** | 38-45 HRC | **Elevated Temperature Properties:** | **Tensile Strength (650°C)** | 1100 MPa | 160 ksi | | **Yield Strength (650°C)** | 965 MPa | 140 ksi | --- #### **3. Key Characteristics & Product Applications** **Key Characteristics:** - **Exceptional High Strength**: Significantly higher strength than conventional nickel-based alloys - **Excellent Corrosion Resistance**: Superior performance in various corrosive environments - **NACE MR0175 Compliance**: Suitable for sour service applications with H₂S - **Good Fatigue Resistance**: Excellent performance under cyclic loading conditions - **Superior Stress Corrosion Cracking Resistance**: Excellent resistance to SCC in chloride environments - **Excellent Fabricability**: Good weldability and formability characteristics **Product Applications:** Custom Age 625 PLUS alloy serves critical functions in demanding applications: - **Oil & Gas Industry**: - Downhole tool components - Wellhead equipment - Valve components and trim - Subsea equipment components - **Aerospace & Defense**: - Gas turbine engine components - Structural airframe components - Rocket motor cases - High-strength fasteners - **Chemical Processing**: - High-pressure reactor vessels - Heat exchanger components - Process piping systems - Pump and valve components - **Power Generation**: - Gas turbine components - High-temperature bolting - Steam turbine elements - Nuclear power plant components --- #### **4. International Standards & Specifications** Custom Age 625 PLUS alloy complies with the following international standards: **Primary Specifications:** - **UNS**: N07716 - **NACE MR0175/ISO 15156**: Materials for use in H₂S-containing environments - **ASTM B805**: Standard Specification for Precipitation Hardening Nickel Alloy Bars, Forgings, and Forging Stock for High Temperature Service - **AMS 5854**: Aerospace Material Specification for Bars, Forgings, and Rings **Additional Standards:** - **ASME Boiler and Pressure Vessel Code**: Case for Code Approval - **ISO 15156-3**: Petroleum and natural gas industries - Materials for use in H₂S-containing environments - **NORSOK M-630**: Material data sheets and element analysis --- #### **Summary of Key Advantages** - **Superior Mechanical Strength**: Significantly higher strength than conventional nickel alloys - **Excellent Corrosion Performance**: Outstanding resistance to various corrosive environments - **Sour Service Capability**: NACE MR0175 compliance for H₂S service - **High Temperature Capability**: Maintains properties at elevated temperatures - **Proven Reliability**: Established performance in critical applications - **Comprehensive Certification**: Meets major international standards and specifications **Technical Note**: Custom Age 625 PLUS alloy requires specific heat treatment to achieve optimal properties, typically involving solution annealing followed by a multi-step aging process. The alloy exhibits excellent weldability using matching filler metals and conventional welding processes. Post-weld heat treatment is recommended for critical applications to restore properties in the heat-affected zone. The material's exceptional combination of strength and corrosion resistance makes it particularly valuable for applications where both high mechanical performance and environmental resistance are required. Proper manufacturing controls and quality assurance procedures are essential to ensure consistent performance in demanding service conditions.

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 3179 gallon liquid totes Special package is available on request.