Type 321 is a stabilized不锈钢其主要优点是在暴露于碳化铬沉淀的温度范围内的800至1500°F（427至816℃）后，其主要优点是对晶间腐蚀的优异抗性。它还改善了合金的升高的温度性质。321型提供优异的抗氧化和腐蚀性，并具有良好的蠕变强度。
In general, Type 321 is used for heavy welded equipment which is operated between 800 to 1500° F (427 to 816° C) or slowly cooled through this range. Experience gained in a wide range of service conditions has provided sufficient data to generally predict the possibility of intergranular attach in most applications.
321不锈钢条化学成分：
| 年级 | C |
SI. |
m |
P. |
S. |
CR. |
你 |
1cr18ni9ti. |
≤0.08 |
≤1.0 |
≤2.0 |
≤0.045. |
≤0.03 |
17-19 |
9-13 |
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