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General Properties. Alloy 321 (UNS S32100) is a titanium stabilized austenitic stainless steel with good general corrosion resistance. It has excellent resistance to intergranular corrosion after exposure to temperatures in the chromium carbide precipitation range of 800 – 1500°F (427 – 816°C).
Oct 23, 2001 · Grade 321 is the grade of choice for applications in the temperature range of up to about 900 °C, combining high strength, resistance to scaling and phase stability with resistance to subsequent aqueous corrosion. Grade 321H is a modification of 321 with higher carbon content, to provide improved high-temperature strength.
Like other austenitic grades, 321 has excellent forming and welding characteristics, is readily brake or roll formed and has outstanding welding characteristics. Post-weld annealing is not required. Grade 321 also has excellent toughness, even down to cryogenic temperatures.
Jan 10, 2023 · Conclusion: If you’re looking for a high-strength, corrosion-resistant stainless steel option, 321 stainless steel is ideal. Its excellent mechanical properties are perfect for many applications, including heat exchangers, kiln linings, and aircraft components. Let’s take a closer look at the 321 stainless steel properties and uses.
View Article. 321 is similar to 304, but uses titanium as a stabilizer. They differ in that they are resistant to intergranular corrosion after heating to temperatures in the carbide precipitation range.
May 30, 2020 · AISI 321 stainless steel is an austenitic stainless steel formulated for primary forming into wrought products. 321 is the AISI designation for this material. S32100 is the UNS number. Additionally, the British Standard (BS) designation is 321S12. The properties of AISI 321 stainless steel include two common variations.
Physical Properties. UNS: S32100 W. Nr./EN: 1.4541 AMS: 5510, 5645 ASTM: A 240, A 276, A 312, A 479 ASME: SA-240, SA-276, SA-312, SA-479 QQS: 766d, 763. GE: B50T1181. Oxidation resistant to 1600°F. Stabilized against weld heat affected zone (HAZ) intergranular corrosion. Resists polythionic acid stress corrosion cracking.
