Stainless steel bolts are widely used in various industries for their corrosion resistance and durability. Among the many types of stainless steel bolts, the 321 and 321H variants are popular due to their specific properties. Stainless Steel 321 Bolt is a type of austenitic stainless steel that contains titanium. This addition enhances the material's resistance to corrosion, especially when used in high-temperature environments. 321 bolts can withstand temperatures up to 800-1500°F, making them ideal for aerospace, chemical, and petrochemical applications. This bolt type is also known for its excellent weldability, flexibility, and strength.
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The Stainless Steel 321H Bolt is a high-carbon version of 321. The added carbon content improves the material's high-temperature strength, making it ideal for extreme heat environments. This bolt type is commonly used in heat exchangers, boiler components, and other high-temperature applications in the energy and power generation industries. 321H bolts are also resistant to the formation of carbide precipitation due to the carbon addition, which can lead to intergranular corrosion.
Benefits of Stainless Steel 321 Bolt and Stainless Steel 321H Bolt: Stainless steel 321 and 321H bolts have many benefits due to their unique properties. These bolts resist corrosion, cracking, and scaling, even in high-temperature and high-stress environments. They also have excellent weldability, ductility, and formability, making them easy to work with during installation and repair. Additionally, the bolts' high-temperature strengths make them a durable and reliable option for applications requiring high heat resistance levels.
Stainless steel 321 bolts and 321H bolts are two types of austenitic stainless steel bolts resistant to corrosion and high temperatures. 321 bolts contain titanium, while 321H bolts have added carbon content. Both bolt types have excellent weldability, flexibility, and strength, making them ideal for use in aerospace, chemical, and power generation industries. Additionally, the bolts' high-temperature strength and corrosion resistance make them a reliable and durable choice for extreme environments.
SS 321 bolts are widely used due to their excellent corrosion resistance, making them suitable for applications in chemical processing, oil and gas, & marine industries.
321 Stainless Steel bolts have a maximum temperature limit of approximately 870°C (1600°F) before significant loss of strength or structural integrity occurs. Make them well-suited for high-temperature applications in industries like aerospace, power generation & chemical processing.
SS 321H bolts offer improved high-temperature stability compared to SS 321 bolts, with the ability to withstand temperatures up to approximately 1000°C (1832°F) without significant loss of strength or structural integrity. They also exhibit enhanced creep resistance, making them suitable for applications involving prolonged exposure to high temperatures & mechanical stresses.
|321||0.08||2.0||1.0||0.045||0.030||17.0 - 19.0||0.10||9.0 - 12.0||5(C+N) – 0.70|
|321H||0.04 – 0.10||2.0||1.0||0.045||0.030||17.0 - 19.0||0.10||9.0 – 12.0||4(C+N) – 0.70|
|Density||Melting Point||Tensile Strength||Yield Strength (0.2%Offset)||Elongation|
|8.0 g/cm3||1457 °C (2650 °F)||Psi – 75000 , MPa – 515||Psi – 30000 , MPa – 205||35 %|
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