Alloy 625，Inconel 625 Other/Similar Specs，UNS N06625，EFORU

British Specs:BS 3072 BS 3073 BS 3074 BS 3075 BS 3076 NA21，American Specs:AMS 5581 Tube AMS 5599 Sheet, Strip and Plate AMS 5666 Bar, Forgings AMS 5869 Sheet, Strip and Plate AMS 5879 Sheet, Strip and Foil AMS 5837 Welding Wire ASTM F3056 Powder AMS 7001 Powder，German Specs:WS 2.4856, AFNOR NC22DNb

### **Technical Datasheet: Alloy 625 / Inconel® 625 / UNS N06625** #### **Material Overview** Alloy 625 is a nickel-chromium-molybdenum alloy strengthened by the addition of niobium. The alloy's unique composition provides exceptional strength and toughness from cryogenic temperatures to 1800°F (980°C), along with outstanding corrosion resistance to a wide range of corrosive environments. --- #### **Chemical Composition (Weight %)** | Element | Minimum | Maximum | Element | Minimum | Maximum | |---------|---------|---------|---------|---------|---------| | Ni | 58.0 | - | Mo | 8.0 | 10.0 | | Cr | 20.0 | 23.0 | Nb+Ta | 3.15 | 4.15 | | Fe | - | 5.0 | Ti | - | 0.40 | | Mn | - | 0.50 | Al | - | 0.40 | | C | - | 0.10 | Si | - | 0.50 | | P | - | 0.015 | S | - | 0.015 | --- #### **Physical Properties** | Property | Value (Metric) | Value (Imperial) | |----------|----------------|------------------| | Density | 8.44 g/cm³ | 0.305 lb/in³ | | Melting Range | 1290-1350°C | 2350-2460°F | | Specific Heat (21°C) | 394 J/kg·K | 0.094 Btu/lb·°F | | Thermal Conductivity (21°C) | 8.7 W/m·K | 6.0 Btu·in/hr·ft²·°F | | Mean Coefficient of Thermal Expansion (21-316°C) | 12.8 μm/m·K | 7.1 x 10⁻⁶ in/in/°F | | Modulus of Elasticity | 207 GPa | 30.0 x 10⁶ psi | | Electrical Resistivity | 1.25 μΩ·m | 49.0 μΩ·in | --- #### **Mechanical Properties (Typical Room Temperature)** | Product Form | Condition | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | |--------------|-----------|------------------------|----------------------|----------------| | Plate & Sheet | Annealed | 827 | 414 | 30 | | Bar | Annealed | 827 | 414 | 30 | | Tube | Annealed | 827 | 414 | 30 | --- #### **International Specifications** **ASTM Standards:** - B443 - Plate, Sheet, and Strip - B444 - Seamless Pipe and Tube - B446 - Rod and Bar - B564 - Forgings and Forging Stock - B366 - Fittings - B446 - Welding Electrodes **International Equivalents:** - UNS: N06625 - EN: 2.4856 / NiCr22Mo9Nb - DIN: 2.4856 - JIS: NCF 625 - GOST: ХН60МВ - AFNOR: NC22DNB4M **Industry Specifications:** - AMS 5599 (Sheet, Strip, Plate) - AMS 5666 (Bar, Forgings) - ASME SB-443 (Pressure Vessel Code) - NACE MR0175/ISO 15156 (Sour Service) --- #### **Key Characteristics** - **Excellent Fatigue Strength**: Superior resistance to fatigue and thermal-fatigue - **Outstanding Corrosion Resistance**: Excellent resistance to pitting, crevice corrosion, and stress-corrosion cracking - **High-Temperature Strength**: Good creep and rupture strength at elevated temperatures - **Oxidation Resistance**: Excellent resistance to oxidation up to 1800°F (980°C) - **Good Fabricability**: Can be welded and fabricated using standard techniques --- #### **Typical Applications** **Aerospace:** - Engine exhaust systems - Turbine shrouds and seals - Combustion liners - Afterburner components **Marine Engineering:** - Propeller blades - Submarine fittings - Seawater piping systems - Offshore platform components **Chemical Processing:** - Reactors and vessels - Heat exchangers - Distillation columns - Process piping **Oil & Gas:** - Downhole instrumentation - Wellhead components - Christmas tree equipment - Flowline systems **Power Generation:** - Gas turbine components - Nuclear reactor core components - Heat recovery systems - Boiler components **Pollution Control:** - Flue gas desulfurization systems - Scrubber components - Waste incineration systems --- #### **Fabrication Notes** **Welding**: Excellent weldability by all standard processes **Machining**: Can be machined using techniques for austenitic stainless steels **Hot Working**: 1700-2200°F (925-1200°C) **Cold Working**: Good ductility permits severe cold forming operations **Heat Treatment**: Solution anneal at 1700-1850°F (925-1010°C) followed by rapid cooling --- #### **Quality Certification** - ISO 9001:2015 Quality Management - AS9100 Aerospace Quality - PED 2014/68/EU Pressure Equipment - NORSOK M-650 Material Approval *Note: Inconel® is a registered trademark of Special Metals Corporation. Properties shown are typical and may vary depending on product form, size, and processing. Users should evaluate materials for specific 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 1764 gallon liquid totes Special package is available on request.