Alloy 925,Incoloy 925 Other/Similar Specs,UNS N09925,E FORU

British Specs:，American Specs:，German Specs:

### **Product Datasheet: Alloy 925 / Incoloy 925 (UNS N09925) - Other Forms & Similar Specifications** **Alloy 925** (commercially known as **Incoloy 925**) is a precipitation-hardenable nickel-iron-chromium-molybdenum-copper alloy that offers exceptional corrosion resistance combined with high strength. This datasheet covers additional product forms beyond standard offerings and outlines similar international specifications that ensure consistent material performance across global markets and applications. --- #### **1. Chemical Composition** The chemical composition is tightly controlled across all product forms: | Element | Content (%) | Purpose | |:---|:---|:---| | **Nickel (Ni)** | 42.0 - 46.0 | Austenite matrix, corrosion resistance | | **Chromium (Cr)** | 19.5 - 23.5 | Oxidation and sulfide resistance | | **Iron (Fe)** | 22.0 min | Matrix element, cost optimization | | **Molybdenum (Mo)** | 2.5 - 3.5 | Pitting and crevice corrosion resistance | | **Copper (Cu)** | 1.5 - 3.0 | Sulfuric acid resistance | | **Titanium (Ti)** | 1.9 - 2.4 | Age hardening element | | **Aluminum (Al)** | 0.1 - 0.5 | Age hardening element | | **Carbon (C)** | 0.03 max | Carbide formation control | | **Manganese (Mn)** | 0.50 max | Sulfide control | | **Silicon (Si)** | 0.50 max | Deoxidizer | | **Sulfur (S)** | 0.03 max | Ductility preservation | | **Phosphorus (P)** | 0.03 max | Ductility preservation | --- #### **2. Physical Properties** | Property | Value | Test Standard | |:---|:---|:---| | **Density** | 8.08 g/cm³ (0.292 lb/in³) | ASTM B311 | | **Melting Range** | 1370 - 1400°C (2500 - 2550°F) | - | | **Coefficient of Thermal Expansion** | 14.2 × 10⁻⁶/°C (20-100°C) | ASTM E228 | | **Thermal Conductivity** | 11.5 W/m·K (at 100°C) | ASTM E1461 | | **Specific Heat** | 448 J/kg·K (at 100°C) | ASTM E1269 | | **Modulus of Elasticity** | 196 GPa (28.4 × 10⁶ psi) | ASTM E111 | | **Electrical Resistivity** | 1.12 μΩ·m | ASTM B193 | | **Magnetic Permeability** | <1.005 (essentially non-magnetic) | ASTM A342 | --- #### **3. Mechanical Properties (Typical Aged Condition)** | Property | Value | Test Standard | |:---|:---|:---| | **Tensile Strength** | 1035 MPa (150 ksi) min | ASTM E8 | | **Yield Strength (0.2% Offset)** | 860 MPa (125 ksi) min | ASTM E8 | | **Elongation** | 15% min | ASTM E8 | | **Reduction of Area** | 35% min | ASTM E8 | | **Hardness** | 269 - 321 HB | ASTM E10 | | **Impact Strength (Charpy V-Notch)** | 45 J min | ASTM E23 | --- #### **4. Other Product Forms & Applications** **Specialized Product Forms:** **Wire Products:** - **Welding Electrodes:** ENiFeCr-1 classification - **Fastener Wire:** For high-strength corrosion-resistant bolts - **Spring Wire:** For corrosive environment applications - **Fabricated Wire Forms:** Custom shapes and assemblies **Custom Components:** - **Machined Parts:** Custom-fabricated components - **Castings:** Investment and sand cast versions - **Powder Metallurgy:** For specialized applications - **Clad Products:** Explosion and roll-bonded clad plate **Special Applications:** **Nuclear Industry:** - **Control Rod Components:** Nuclear reactor applications - **Spent Fuel Handling:** Corrosion-resistant handling equipment - **Reactor Vessel Internals:** Support structures and components **Aerospace:** - **Rocket Components:** Propulsion system parts - **Aircraft Fittings:** High-strength corrosion-resistant fittings - **Spacecraft Components:** Satellite and launch vehicle parts **Medical:** - **Surgical Instruments:** Corrosion-resistant medical tools - **Implant Components:** Non-magnetic medical implants - **Medical Equipment:** MRI and diagnostic equipment parts --- #### **5. International Standards & Equivalents** **Global Standard Equivalents:** | Country/Region | Standard | Designation | |:---|:---|:---| | **International** | UNS | N09925 | | **USA** | ASTM B423/B424/B425/B564 | Alloy 925 | | **USA** | ASME SB423/SB424/SB425/SB564 | Alloy 925 | | **Germany** | DIN | 2.4852 | | **Germany** | Werkstoff Nr. | 2.4852 | | **France** | AFNOR | NC15FeTNb | | **UK** | BS | HR 10 | | **Europe** | EN | NiCr21Mo19Fe | | **Japan** | JIS | NCF 925 | | **China** | GB | NS142 | **Industry-Specific Specifications:** **Oil & Gas:** - **NACE MR0175/ISO 15156:** Approved for sour service - **API 6A:** Wellhead and Christmas tree equipment - **API 20B:** Open die forgings specification **Aerospace:** - **AMS 5895:** Aerospace material specification - **MIL-SPEC:** Various military specifications - **BMS:** Boeing material specifications **Nuclear:** - **ASME Section III:** Nuclear components - **RCC-M:** French nuclear design code - **ASTM A988:** High-strength nuclear components --- #### **6. Special Processing Specifications** **Heat Treatment Standards:** - **Solution Annealing:** 1095-1120°C (2000-2050°F) + rapid quench - **Aging Treatment:** 620-650°C (1150-1200°F) for 8-16 hours - **Process Standards:** AMS 2759, ASTM B906 **Testing & Certification:** - **Chemical Analysis:** ASTM E1473, ISO 11438 - **Mechanical Testing:** ASTM E8, ISO 6892-1 - **Corrosion Testing:** ASTM G48, ASTM G36 - **NDE Requirements:** ASME Section V, EN 10228 --- #### **7. Quality Assurance & Documentation** **Certification Requirements:** - **EN 10204 3.1/3.2:** Inspection certificates - **PED 2014/68/EU:** Pressure equipment directive - **NORSOK M-630:** Material data sheet requirements - **ANSI/NCSL Z540-1:** Calibration requirements **Quality Management:** - **ISO 9001:** Quality management systems - **ISO 14001:** Environmental management - **OHSAS 18001:** Health and safety management - **API Q1:** Quality management system requirements --- #### **8. Technical Advantages** * **Global Recognition:** Accepted by major international standards organizations * **Consistent Quality:** Uniform properties across all product forms * **Proven Performance:** Extensive service history in critical applications * **Technical Support:** Comprehensive engineering and application support * **Supply Chain Reliability:** Multiple qualified suppliers worldwide * **Documentation Traceability:** Complete material traceability from melt to final product * **Regulatory Compliance:** Meets international regulatory requirements --- #### **9. Special Considerations for Material Selection** **Design Considerations:** - **Corrosion Allowance:** Minimal due to excellent corrosion resistance - **Fabrication Methods:** Compatible with standard manufacturing processes - **In-Service Performance:** Proven long-term reliability in harsh environments - **Life Cycle Costing:** Favorable due to extended service life and reduced maintenance **Technical Support Services:** - **Material Selection:** Assistance with specification choices - **Fabrication Guidance:** Recommended practices and procedures - **Failure Analysis:** Investigation and resolution of service issues - **Application Engineering:** Customized solutions for specific requirements Alloy 925's comprehensive international specification coverage and availability in multiple specialized forms make it a versatile and reliable choice for engineers designing critical components for corrosive service applications across multiple industries worldwide.

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 2011 gallon liquid totes Special package is available on request.