Type 321 is a stabilized stainless steel which offers as its main advantage an excellent resistance to intergranular corrosion following exposure to temperatures in the chromium carbide precipitation range from 800 to 1500° F (427 to 816° C). It also improves the elevated temperature properties of the alloy. Type 321 provides excellent resistance to oxidation and corrosion and possesses good creep strength.
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 stainless steel strip Chemical Composition :
| Grade |
C |
Si |
Mn |
P |
S |
Cr |
Ni |
|
1Cr18Ni9Ti |
≤ 0.08 |
≤ 1.0 |
≤2.0 |
≤0.045 |
≤0.03 |
17-19 |
9-13 |
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