Inconel Products Overview
Inconel is a high-performance alloy made of nickel-chromium. It is widely known for its excellent resistance to heat and oxidation, making it ideal for extreme environments, particularly in aerospace, chemical processing, and power generation industries.
Grades of Inconel Alloy
- Inconel 600: Known for its excellent oxidation and corrosion resistance, suitable for high-temperature applications up to 2000°F.
- Inconel 625: Offers outstanding fatigue and thermal-fatigue strength, corrosion resistance, and weldability, ideal for extreme environments.
- Inconel 718: A precipitation-hardenable nickel-chromium alloy that provides high yield, tensile, and creep-rupture properties at high temperatures.
- Inconel 750: A high-strength nickel-chromium alloy with enhanced resistance to oxidation, used in jet engines and high-temperature parts.
- Inconel X-750: Known for its excellent mechanical properties at elevated temperatures, especially in the gas turbine industry.
Properties of Inconel
- High-Temperature Strength: Inconel alloys can retain their strength and stability even at elevated temperatures (up to 2000°F or higher).
- Corrosion Resistance: Inconel is highly resistant to oxidation and corrosion in both acidic and basic environments.
- Excellent Weldability: Most Inconel alloys exhibit excellent weldability and formability, suitable for a variety of manufacturing processes.
- Good Fatigue and Thermal-fatigue Strength: Inconel alloys are known for their resistance to thermal and mechanical fatigue, making them ideal for use in dynamic conditions.
- Oxidation Resistance: Inconel's high chromium content provides excellent resistance to oxidation at high temperatures.
Applications of Inconel Products
- Aerospace Industry: Used in turbine blades, jet engines, and exhaust systems due to its high-temperature strength and resistance to thermal cycling.
- Chemical Processing: Applied in reactors, heat exchangers, and other equipment in chemical processing due to its resistance to corrosion and high temperatures.
- Power Generation: Used in gas turbines, steam turbines, and other critical components exposed to high temperatures and pressures.
- Marine Engineering: Utilized in components exposed to seawater, such as marine exhaust systems and offshore oil rigs.
- Industrial Applications: Used in furnace components, heat exchangers, and gas turbines where oxidation resistance and strength at high temperatures are critical.
Chemical Composition of Inconel Products
| Product | Ni (%) | Cr (%) | Fe (%) | Nb (%) | Co (%) | Other Elements |
|---|---|---|---|---|---|---|
| Inconel 600 | 72 | 14-17 | 6-10 | 0.15-0.35 | 0-1.5 | Mo, Ti |
| Inconel 625 | 58.0 | 20-23 | 5.0-10.0 | 3.15-4.15 | 0-1.0 | Mo, Ti, Al |
| Inconel 718 | 50.0 | 17.0 | 19.0 | 5.0 | 0.5 | Mo, Ti, Al, Nb |
| Inconel 750 | 58.0 | 14-16 | 19.0 | 1.5-2.5 | 0.5 | Mo, Ti, Al |
| Inconel X-750 | 70.0 | 15.0-17.0 | 5.0-7.0 | 0.35-0.60 | 0.5 | Mo, Ti, Al, Nb |
Mechanical Properties of Inconel Products
| Product | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Hardness (HRB) |
|---|---|---|---|---|
| Inconel 600 | 620 | 250 | 40 | 95-100 |
| Inconel 625 | 1034 | 827 | 35 | 90-95 |
| Inconel 718 | 1034 | 827 | 20 | 90-100 |
| Inconel 750 | 900 | 650 | 30 | 95-105 |
| Inconel X-750 | 1034 | 827 | 20 | 90-100 |
Specification Standards for Inconel Products
| Product | Standard | Description |
|---|---|---|
| Inconel 600 | ASTM B166 | Standard Specification for Nickel-Chromium Alloy Bars and Forgings |
| Inconel 625 | ASTM B443 | Standard Specification for Nickel-Chromium-Molybdenum Alloy Plate, Sheet, and Strip |
| Inconel 718 | ASTM B637 | Standard Specification for Precipitation-Hardenable Nickel-Chromium Alloys |
| Inconel 750 | ASTM B446 | Standard Specification for Nickel-Chromium Alloys |
| Inconel X-750 | ASTM B444 | Standard Specification for Nickel-Chromium-Iron Alloys |