Inconel 725
Alloy Inconel 725 manufactured by Gnee complies with ASTM and ISO standards and comes in a variety of shapes, including plates, tubes, rods, wires, forgings, etc., and supports hot working, cold working, annealing and other processes. In addition, other Inconel grades are also supplied, such as Inconel 600, Inconel 625, etc. Welcome to contact us for a quote!
| Delivery Time | 30-50 days, 7 days for stock goods |
|---|---|
| Loading Port | Shanghai, Tianjin, Qingdao |
| Payment method and term | Wire transfer and letter of credit |
| Supply Ability | Up to 800 tons per month |
| Customization | Supports custom sizes, cutting, welding, and surface treatment |
Description
Inconel 725 is a nickel-chromium-based superalloy renowned for its exceptional resistance to corrosion and high mechanical strength. It contains significant additions of molybdenum, niobium, and titanium, which enhance its resistance to stress-corrosion cracking, particularly in harsh environments like sour gas applications.
Compared to Inconel 718, Inconel 725 offers improved corrosion resistance, especially in chloride-ion environments, making it ideal for marine, chemical, and oilfield applications. It is precipitation-hardenable, achieving tensile strengths exceeding 140 ksi (965 MPa) after heat treatment, while maintaining ductility.
This alloy is often used in downhole tubing, valves, and hangers, where both durability and resistance to extreme conditions are critical. Its ability to retain properties at temperatures up to 1200°F (649°C) adds to its versatility across industries.
What forms does Gnee Inconel 725 supplier supply?
- Inconel 725 Seamless Pipe
- Inconel 725 Welded Pipe
- Inconel 725 Round Bar
- Inconel 725 Flat Bar
- Inconel 725 Sheet
- Inconel 725 Plate
- Inconel 725 Forged Fittings
- Inconel 725 Butt Weld Fittings
Inconel alloy 725 Product Parameters
| Parameter | Details |
| Grade | Inconel 725 |
| Forms | Pipe, Tube, Bar, Sheet, Plate, Forgings |
| Manufacturing Process | Seamless, Welded, Forged |
| Size | Pipes: 1/8″ to 24″ OD; Plates: 0.5mm to 100mm |
| Density | 8.3 g/cm³ |
| Melting Point | 1,350–1,400°C (2,462–2,552°F) |
| Yield Strength | ≥620 MPa (90 ksi) |
| Tensile Strength | ≥930 MPa (135 ksi) |
| Elongation | ≥15% |
| Corrosion Resistance | Excellent resistance to stress corrosion cracking and pitting |
| Service | Custom cutting, bending, heat treatment |
| Standards | ASTM B637, ASTM B805 |
What ASTM standards of Inconel 725 can Gnee produce?
| ASTM Standard | Description |
| ASTM B637 | Standard specification for precipitation-hardened nickel alloy bars, forgings, and forging stock (Inconel 725). |
| ASTM B805 | Standard specification for wrought nickel alloys (includes seamless and welded pipe/tube for Inconel 725). |
Alloy UNS N07725 Equivalent grades
| Standard | Grade |
| Inconel Alloy | Inconel 725 |
| UNS | N07725 |
| W. Nr. | 2.4668 |
Features and Advantages
- Exceptional Corrosion Resistance: Inconel 725 exhibits superior resistance to stress corrosion cracking, pitting, and crevice corrosion in harsh environments, including sour gas and seawater applications.
- High Strength Without Heat Treatment: Unlike many alloys, Inconel 725 achieves excellent mechanical strength and toughness without requiring additional heat treatments, making it cost-effective and efficient for demanding applications.
- Resistance to Oxidation and Scaling: The alloy performs well in high-temperature environments, resisting oxidation and scaling up to 1200°F (649°C), maintaining structural integrity.
- Enhanced Fatigue Resistance: It offers outstanding resistance to cyclic loading and fatigue, making it ideal for components exposed to repeated mechanical stress, such as in oil and gas wells.
- Weldability: Inconel 725 maintains its corrosion resistance and mechanical properties in welded joints, making it suitable for manufacturing complex components like flanges, valves, and connectors.
- Versatility in Harsh Conditions: Its combination of corrosion resistance and strength makes it a preferred material in sour gas environments, marine industries, and chemical processing applications.
Parameter Information
Chemical Parameters
| Element | Composition (%) |
| Nickel (Ni) | 55.0-59.0 |
| Chromium (Cr) | 19.0-22.5 |
| Molybdenum (Mo) | 7.0-9.5 |
| Columbium (Nb) | 2.75-4.0 |
| Titanium (Ti) | 1.0-1.7 |
| Aluminum (Al) | 0.2-0.8 |
| Iron (Fe) | Balance |
| Manganese (Mn) | 0.35 max |
| Silicon (Si) | 0.2 max |
| Sulfur (S) | 0.01 max |
| Phosphorus (P) | 0.015 max |
| Carbon (C) | 0.03 max |
Mechanical Properties
| Property | Value |
| Tensile Strength | 140-160 ksi (965-1103 MPa) |
| Yield Strength (0.2% offset) | 100-120 ksi (689-827 MPa) |
| Elongation | 25-35% |
| Hardness (Rockwell C) | 35-40 HRC |
Physical Property
| Property | Value |
| Density | 8.2 g/cm³ |
| Melting Range | 1290-1350°C (2350-2460°F) |
| Thermal Conductivity | 11.1 W/m·K (at 20°C) |
| Specific Heat Capacity | 435 J/kg·K (at 20°C) |
| Electrical Resistivity | 1.28 µΩ·m (at 20°C) |
| Modulus of Elasticity | 205 GPa (29.7 x 10⁶ psi) |
| Coefficient of Expansion | 13.3 µm/m·K (at 20-1000°C) |
Application
- Oil and Gas: Downhole tubing, valves, and hangers.
- Chemical Processing: Equipment for handling corrosive chemicals.
- Marine Engineering: Components exposed to seawater and salt environments.
- Power Generation: High-strength parts in turbines and reactors.
- Aerospace: Fasteners and structural components for high-corrosion zones.
English 
Spanish 
Arabic 
Indonesian 
Turkish 
Russian 
Portuguese 
French 
Persian