Product Selection Differences for 321 Grade Stainless Steel

When selecting 321 Grade Stainless Steel, there are key differences to consider compared to other grades:

1. Corrosion Resistance: 321 stainless steel contains titanium, which stabilizes the material against chromium carbide formation during welding and at elevated temperatures. This makes it more resistant to intergranular corrosion than 304 stainless steel.

2. High Temperature Resistance: 321 steel is capable of withstanding high temperatures up to 900°C (1650°F). This makes it suitable for applications involving high heat or cyclic heating conditions.

3. Weldability: 321 stainless steel has good weldability and can be easily formed and welded using common techniques. The addition of titanium helps prevent the formation of chromium carbide precipitation, which can lead to intergranular corrosion in welded areas.

4. Creep and Stress Rupture Strength: The titanium content in 321 stainless steel improves its creep and stress rupture strength compared to other austenitic stainless steels like 304.

5. Applications: Due to its excellent high-temperature properties and corrosion resistance, 321 stainless steel is commonly used in industries such as aerospace, automotive, chemical processing, and thermal processing equipment.

6. Cost: While 321 stainless steel offers superior performance in certain applications, it is generally more expensive than 304 stainless steel. Consider the cost implications when selecting the grade for your specific application.

By considering these factors, you can determine if 321 Grade Stainless Steel is the most suitable choice for your application based on its unique properties and performance characteristics.