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Inconel is a brand of superalloy, a type of high-performance steel that is made with a combination of nickel and chromium. It is known for its excellent corrosion resistance, particularly at high temperatures, and is often used in industries such as aerospace, chemical processing, and power generation. Inconel is also resistant to a variety of corrosive chemicals and has a high melting point, making it useful in high-temperature environments. Some common applications for Inconel include heat exchangers, pressure vessels, and gas turbine engines.
Titanium is a metallic element that is known for its strength, low weight, and corrosion resistance. It is found in a number of alloys, and is used in a wide range of applications including aerospace, military, and medical devices. Titanium has a number of characteristics that make it attractive for use in various industries. It is strong and lightweight, making it useful in the aerospace industry, where weight is a major concern. It is also corrosion resistant, which makes it useful in marine and chemical processing applications. In addition, titanium has a high melting point and is resistant to wear, making it useful in high-temperature and high-stress environments. Some common applications for titanium include aircraft parts, golf clubs, and surgical implants.
Inconel and titanium are both highly corrosion-resistant and strong metals that have a wide range of applications. However, there are some key differences between the two materials:
Composition: Inconel is a nickel-chromium-based superalloy, while titanium is a metal element that is found in a number of alloys.
Strength: Both Inconel and titanium are very strong, but titanium is generally considered to be stronger, particularly at high temperatures.
Weight: Titanium is much lighter than Inconel, making it a good choice for applications where weight is a concern, such as in the aerospace industry.
Corrosion resistance: Both Inconel and titanium are highly resistant to corrosion, but Inconel is particularly resistant to corrosion caused by high temperatures and corrosive chemicals.
Cost: Inconel is generally more expensive than titanium.
In general, Inconel is used in high-temperature and corrosion-resistant applications, while titanium is used in applications where strength and low weight are important.
| Property | Inconel | Titanium |
| Composition | Nickel-chromium-based | Metallic element |
| Strength | High | High, particularly at high temperatures |
| Weight | Heavy | Light |
| Corrosion resistance | Excellent, particularly at high temperatures and with corrosive chemicals | Excellent |
| Cost | More expensive | Less expensive |
| Common applications | Aerospace, chemical processing, power generation, marine, medical, oil and gas | Aerospace, military, medical devices, sports equipment, chemical processing, oil and gas |
| Inconel | Ni | Cr | Fe | Mo | Nb | Co | Mn | Cu | Al | Ti | Si | C | S | P | B |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 600 | 72 | 14.0-17.0 | 6.0-10.0 | 1 | 0.5 | 0.5 | 0.15 | 0.015 | |||||||
| 617 | 44.2-56.0 | 20.0-24.0 | 3 | 8.0-10.0 | 10.0-15.0 | 0.5 | 0.5 | 0.8-1.5 | 0.6 | 0.5 | 0.15 | 0.015 | 0.015 | 0.006 | |
| 625 | 58 | 20.0-23.0 | 5 | 8.0-10.0 | 3.15-4.15 | 1 | 0.5 | 0.4 | 0.4 | 0.5 | 0.1 | 0.015 | 0.015 | ||
| 690 | 59.5 | 30 | 9.2 | 0.35 | 0.01 | 0.02 | 0.35 | 0.019 | 0.003 | ||||||
| 718 | 50.0-55.0 | 17.0-21.0 | balance | 2.8-3.3 | 4.75-5.5 | 1 | 0.35 | 0.2-0.8 | 0.65-1.15 | 0.3 | 0.35 | 0.08 | 0.015 | 0.015 | 0.006 |
| X-750 | 70 | 14.0-17.0 | 5.0-9.0 | 0.7-1.2 | 1 | 1 | 0.5 | 0.4-1.0 | 2.25-2.75 | 0.5 | 0.08 | 0.01 |
| Grade | C | O | N | Ti | H | Fe | V | Al |
| Titanium Gr 2 | 0.10 max | 0.25 max | 0.03 max | bal | 0.015 max | 0.30 max | ||
| Titanium Gr 5 | 0.10 max | 0.20 max | 0.05 max | bal | 0.015 max | 0.30 max | 3.5-4.5 | 5.5-6.75 max |
| STANDARD | WERKSTOFF NR. | UNS |
| Inconel 600 | 2.4816 | N06600 |
| Inconel 601 | 2.4851 | N06601 |
| Inconel 617 | 2.4663 | N06617 |
| Inconel 625 | 2.4856 | N06625 |
| Inconel 690 | 2.4642 | N06690 |
| Inconel 718 | 2.4668 | N07718 |
| Inconel 725 | - | N07725 |
| Inconel X-750 | 2.4669 | N07750 |
| STANDARD | WERKSTOFF NR. | UNS |
| Titanium Gr 1 | 3.7025 | R50250 |
| Titanium Gr 2 | 3.7035 | R50400 |
| Titanium Gr 5 | 3.7165 | R56400 |
| Titanium Gr 7 | 3.7235 | R52400 |
| Titanium Gr 9 | 3.7195 | R56320 |
| Titanium Gr 12 | 3.7105 | R53400 |
Welding titanium can be a challenging process due to its high reactivity and sensitivity to heat. The following are some tips for welding titanium:
Use a clean, contaminant-free environment: Titanium is highly reactive and can easily pick up contaminants from the surrounding environment, which can affect the quality of the weld. It is important to use a clean, contaminant-free environment when welding titanium.
Use a shielding gas: Titanium is highly reactive to oxygen and nitrogen, so it is important to use a shielding gas when welding to protect the weld from these elements. Argon is commonly used as a shielding gas when welding titanium.
Use a low welding heat: It is important to use a low welding heat when welding titanium to avoid overheating the metal, which can cause it to become brittle.
Use a smaller weld pool: Titanium has a low thermal conductivity, so it is important to use a smaller weld pool to help control the heat of the weld.
Use a smaller electrode: Using a smaller electrode can help to reduce the amount of heat that is generated during the welding process.
Use a lower current: Using a lower current can help to reduce the amount of heat that is generated during the welding process.
It is important to follow these tips to ensure the best possible results when welding titanium.
Welding Inconel can be a challenging process due to its high strength and corrosion resistance. The following are some tips for welding Inconel:
Use clean, contaminant-free equipment: Inconel is highly resistant to corrosion, so it is important to use clean, contaminant-free equipment when welding to avoid contamination of the weld.
Use a shielding gas: Inconel is highly reactive to oxygen and nitrogen, so it is important to use a shielding gas when welding to protect the weld from these elements. Argon is commonly used as a shielding gas when welding Inconel.
Preheat the metal: Preheating the metal can help to reduce the risk of cracking and improve the overall quality of the weld.
Use a low welding heat: It is important to use a low welding heat when welding Inconel to avoid overheating the metal, which can cause it to become brittle.
Use a smaller weld pool: Inconel has a low thermal conductivity, so it is important to use a smaller weld pool to help control the heat of the weld.
Use a smaller electrode: Using a smaller electrode can help to reduce the amount of heat that is generated during the welding process.
Use a lower current: Using a lower current can help to reduce the amount of heat that is generated during the welding process.
It is important to follow these tips to ensure the best possible results when welding Inconel.
| Inconel | Melting Point | Density | Tensile Strength | Elongation | Yield Strength (0.2%Offset) |
| 600 | 1413 °C (2580 °F) | 8.47 g/cm3 | Psi – 95,000 , MPa – 655 | 40 % | Psi – 45,000 , MPa – 310 |
| 601 | 1411 °C (2571 °F) | 8.1 g/cm3 | Psi – 80,000 , MPa – 550 | 30 % | Psi – 30,000 , MPa – 205 |
| 617 | 1363°C | 8.3g/cm³ | ≥ 485 MPa | 25 % | ≥ 275 MPa |
| 625 | 1350 °C (2460 °F) | 8.4 g/cm3 | Psi – 135,000 , MPa – 930 | 42.5 % | Psi – 75,000 , MPa – 517 |
| 690 | 1363°C | 8.3g/cm³ | ≥ 485 MPa | 25 % | ≥ 275 MPa |
| 718 | 1350 °C (2460 °F) | 8.2 g/cm3 | Psi – 135,000 , MPa – 930 | 45 % | Psi – 70,000 , MPa – 482 |
| 725 | 1271°C-1343 °C | 8.31 g/cm3 | 1137 MPa | 20 % | 827 MPa |
| X-750 | 1430°C | 8.28 g/cm3 | 1267 MPa | 25 % | 868 MPa |
| Grade | Min.Tensile(KSI) | Min.Yield(KSI) | Hardness | Tensile Modulus | Poisson's Ratio |
| Titanium Gr 2 | 50 | 40 | 14.9 | 103 GPa | 0.34-0.10 |
| Titanium Gr 5 | 130 | 120 | 16.4 | 114 GPa | 0.30-0.33 |
Inconel is a highly corrosion-resistant and strong metal that has a wide range of applications. Some common applications for Inconel include:
Aerospace: Inconel is often used in the aerospace industry for its high strength and corrosion resistance. It is used in the construction of aircraft parts such as engine components, exhaust systems, and structural components.
Chemical processing: Inconel is resistant to a variety of corrosive chemicals, making it useful in the chemical processing industry for the construction of tanks, pipes, and other equipment.
Power generation: Inconel is resistant to high temperatures and is often used in power plants for the construction of heat exchangers, steam generators, and other equipment.
Marine: Inconel's corrosion resistance makes it useful in marine applications such as the construction of propellers and other underwater components.
Medical: Inconel is often used in the medical industry for the construction of implants and other devices that require strength and corrosion resistance.
Oil and gas: Inconel is resistant to corrosion caused by high temperatures and corrosive chemicals, making it useful in the oil and gas industry for the construction of pipes and other equipment.
Titanium is a strong, lightweight, and corrosion-resistant metal that has a wide range of applications. Some common applications for titanium include:
Aerospace: Titanium is used in the aerospace industry for the construction of aircraft parts such as engines, airframes, and landing gear. Its low weight and high strength make it an ideal choice for use in the aerospace industry.
Military: Titanium is used in the military for the construction of tanks, armor, and other military equipment. Its corrosion resistance and strength make it ideal for use in demanding environments.
Medical: Titanium is used in the medical industry for the construction of implants such as artificial joints, screws, and plates. Its corrosion resistance and biocompatibility make it an ideal choice for use in the body.
Sports equipment: Titanium is used in the construction of sports equipment such as golf clubs, tennis rackets, and bicycle frames. Its strength and low weight make it an ideal choice for use in sports equipment.
Chemical processing: Titanium is resistant to a variety of corrosive chemicals, making it useful in the chemical processing industry for the construction of tanks, pipes, and other equipment.
Oil and gas: Titanium is resistant to corrosion caused by high temperatures and corrosive chemicals, making it useful in the oil and gas industry for the construction of pipes and other equipment.