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321 stainless steel Chemical Composition,321 stainless steel Properties

Posted:3/30/2015 2:36:31 AM

321 stainless steel is the basic austenitic 18/8 steel (Grade 304) stabilised by Titanium (321) or Niobium (347) additions. 321 stainless steel used because they are not sensitive to intergranular corrosion after heating within the carbide precipitation range of 425-850°C.

321 stainless steel 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.

321 stainless steel Chemical Composition
Carbon 0.08 max
Chromium 17 - 19
Iron Balance
Manganese 2 max
Nickel 9 - 12
Phosphorus 0.045 max
Silicon 1 max
Sulphur 0.03 max
Titanium Min:5 x C

321 stainless steel Properties
Non-magnetic. Corrosion resistance similar to Type 304 stainless steel. Type 321 is used for welded equipment which cannot be annealed and for equipment which is operated between 800-1500°F (427-816°C). The elevated temperature stress rupture and creep strength of Type 321 is higher than Type 304 stainless steel. Room temperature yield strength is approximately 35,000 psi and tensile strength 85,000 psi.

For more information about 321 stainless steel Chemical Composition or 321 stainless steel Properties , you can contact us , katalor as a 321 stainless steel supplier in CHINA ,We keep more than 1000 ton 321 stainless steel stock every month .

 

 
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