Alloy Selection for Metal Ring Seals: A Comprehensive Comparison of Alloy 600, Alloy 718, SS316L and Alloy 750
Classification：Industry Updates Release date： 2023-08-19 10:13
Which Material is Right for Your Metal Ring Seals?
Are you in search of the perfect material for your metal seals? Read our article now and make an informed decision with our metal seal selection guide!
Metal seals are an essential component in various industrial applications, such as oil and gas, chemical processing, and power generation. These seals are designed to prevent leaks and protect equipment from corrosive and high-temperature environments. The selection of the appropriate material for metal ring seals is crucial for ensuring the longevity and performance of the equipment.
In this article, we will provide a comprehensive comparison of four popular materials used in the manufacture of metal ring seals: Alloy 600, Alloy 718, SS316L and Alloy 750. We will analyze the properties and performance of each material, including temperature resistance, corrosion resistance, and suitability for different industrial applications.
Alloy 600, also known as Inconel 600, is a nickel-chromium alloy that offers excellent resistance to oxidation and corrosion. It also has high strength and good workability, making it suitable for a wide range of applications in industries such as chemical processing, aerospace, and power generation.
Alloy 718, also known as Inconel 718, is a nickel-chromium alloy that offers high strength and good corrosion resistance. It also has excellent weldability and can be heat treated to achieve a wide range of mechanical properties. It is commonly used in applications such as aerospace, oil and gas, and medical implants.
SS316, or stainless steel 316, is a type of stainless steel that contains molybdenum, which makes it more resistant to corrosion and pitting. It also has good strength and durability, making it suitable for a wide range of applications in industries such as food processing, marine, and chemical processing.
Alloy 750, also known as Inconel 750, is a nickel-chromium alloy that offers excellent resistance to corrosion and oxidation. It also has high strength and good creep resistance, making it suitable for use in high-temperature applications such as gas turbine engines and heat-treating equipment.
The following table summarizes the key properties of these alloys:
Comparison of Alloy 600, Alloy 718, SS316L and Alloy 750
|
Alloy
|
Composition
|
Key Properties
|
|
Alloy 600
|
Ni-Cr
|
High resistance to oxidation and corrosion, high strength, good workability
|
|
Alloy 718
|
Ni-Cr-Mo
|
High strength, good corrosion resistance, excellent weldability
|
|
SS316
|
Fe-Cr-Ni-Mo
|
Good resistance to corrosion and pitting, good strength and durability
|
|
Alloy 750
|
Ni-Cr-Mo-Co-Al-Ti
|
Excellent resistance to corrosion and oxidation, high strength, good creep resistance
|
Temperature Resistance
Alloy 600 and Alloy 718 are nickel-based alloys capable of withstanding temperatures of up to 538°C and 650°C, respectively. The stainless steel alloy SS316L can withstand temperatures up to 316°C. The nickel-chromium alloy 750 can withstand temperatures up to 593°C.
Corrosion Resistance
Alloy 600 offers excellent resistance to oxidation and carburization in high-temperature environments. Alloy 718 provides excellent resistance to corrosion in a wide range of environments, including seawater. SS316L is highly resistant to corrosion in harsh environments, particularly those with a high chloride content. Alloy 750 offers excellent resistance to stress corrosion cracking and pitting in high-temperature environments.
Industrial Applications
Alloy 600 is suitable for use in furnace components, heat exchangers, and gas turbine components. Alloy 718 is suitable for use in aerospace and high-performance industrial applications. SS316L is suitable for use in pharmaceutical and food processing equipment. Alloy 750 is suitable for use in nuclear and aerospace applications.
Summary
In conclusion, the selection of the appropriate material for metal ring seals depends on the specific requirements and operating conditions of the equipment. In high-temperature environments, Alloy 600 and Alloy 718 are suitable options, while SS316L and Alloy 750 are suitable for harsh environments with high chloride content or high stress corrosion cracking and pitting. It is also important to consider the cost and weldability of the alloy when making a selection.
In this article, we have provided a comprehensive comparison of Alloy 600, Alloy 718, SS316L and Alloy 750, which are four popular materials used in the manufacture of metal ring seals. By understanding the properties and performance of these alloys, customers can make an informed decision on the most suitable material for their specific requirements and operating conditions. At Sonkit, we are dedicated to providing high-quality metal ring seals that are built to last. Contact us to learn more about our products and services.
Sonkit Industry Technology Co., Ltd. is a privately-owned company that was founded in 2010. Starting in 2012, Sonkit specializes in metallic seals. We develop and manufacture high-performance metal seal rings. In 2018, we customized a series of high-end heat-treating equipment to solve heat treatment quality control problems.
Our plant is located in Shanghai, China. We can research and develop, customize, and manufacture metal seal products for critical environments that are subject to extremes of temperature, pressure, medium, or combinations of these factors. The applications of our products include flow meters, defense and military, nuclear, mold, chemical fiber, semiconductor and vacuum pumps, aircraft engines, and pressure pipelines, among others.
Sonkit provides the following products:
Our benefits include:
• Experienced research and technical support team
• Stable and reliable electroplating process
• Customized heating process with high reliability
• In-house test labs for high-quality control
• Quick response time
• Close cooperation with renowned universities and research institutes
• Experience collaborating with top 500 enterprises worldwide
Feel free to reach out to johnny@sonkit.cn(sales) for product and solution inquiries. WhatsApp: +86 13917192435. Website: www.sonkit.cn/en.
