What material is 321?
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The pressure tapping tubes we use here are made of 321 material; may I ask what material Century 321 is?
It is an austenitic stainless steel, equivalent to 0Cr19Ni11Ti
Stainless steel, similar to 304,
It’s 316, right? Stainless steel
321 Chemical composition: Carbon: 0.08, Silicon: 1.00, Manganese: 2.00, Phosphorus: 0.045, Sulfur: 0.030, Nickel: 9.00–12.00, Chromium: 17.00–19.00, Titanium: 5C–0.70. This austenitic stainless steel is equivalent to the domestic grade 1Cr17Ni9Ti. 321 stainless steel is an Ni-Cr-Mo type austenitic stainless steel; its properties are very similar to those of 304, but the addition of titanium gives it improved resistance to intergranular corrosion as well as higher strength at high temperatures. The addition of metallic titanium effectively controlled the formation of chromium carbide. 321 stainless steel exhibits excellent properties in terms of stress rupture at high temperatures, as well as creep resistance; its mechanical properties are superior to those of 304 stainless steel. Industrial applications: Used in outdoor machinery in the chemical, coal, and petroleum industries where high resistance to intergranular corrosion is required, as well as in building materials for heat-resistant components and those for which heat treatment is difficult. 1. Oil exhaust gas combustion pipes 2. Engine exhaust pipes 3. Boiler enclosures, heat exchangers, and components of heating furnaces 4. Silencing components for diesel engines 5. Boiler pressure vessels 6. Chemical transport vehicles 7. Expansion joints 8. Spiral-welded pipes for burners and dryers
Table of stainless steel grades compared with those in the United States, Japan, and Europe. Category: China, United States, Japan, Europe. Austenitic stainless steels: 0Cr18Ni9Ti, 321, SUS321, SAF2337; 0Cr18Ni9, 304, SUS304
0Cr18Ni10Ti
321 is an ANSI standard and a type of stainless steel; common types such as 304, 304L, 316, and 316L are all examples of stainless steel grades. In comparison, the composition of 321 is similar to that of 1Cr18Ni9Ti, which is commonly used in China, but it should actually belong to the 0Cr18Ni9Ti category. Therefore, the performance of 321 is better than that of 1Cr18Ni9Ti. Due to the addition of Ti compared to 304, its performance is better than that of 304 stainless steel. However, compared to 316, which contains Mo2Ti, the performance of 321 is inferior to that of 316
It is 0Cr18Ni9Ti