321,321H, 1.4541

TP321, S32100, 321H, S32109, 1.4541, AISI321


Stainless Steel 321 is a basic austenitic 18/8 steel (Grade 304) stabilised by Titanium (321) addition. SS 321 is used because they are not sensitive to intergranular corrosion after heating within the carbide precipitation range of 425-850°C. SS 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.

The key feature of 321 stainless is its resistance to intergranular corrosion. It employs titanium as a stabilizing element against chromium carbide formation. This alloy also exhibits strength characteristics superior to those of 304 stainless.


Chemical Composition %

 

C

Mn

P

S

Si

Ni

Cr

Mo

Ti

N

Nb

321

0.080

2.00

0.045

0.030

1.0

9-12

17-19

 

0.7>5XC

 

 

321H

0.04-0.10

2.00

0.045

0.030

1.0

9-12

17-19

 

0.7>5XC

 

 

1.4541

0.080

2.00

0.040

0.015

1.0

9-12

17-19

 

0.7>5XC

 

 


Mechanical propertoes

 

Tensile strength(Mpa)

Yield point(Mpa)

Elongation(%)

Longitudinal

Elongation(%)

transverse

321

515

205

35

30

321H

515

205

35

30

1.4541

500-700

200

35

30


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seamless pipe,seamless tube,

 welded pipe,welded tube,

pipe fitting,flange,bar,plate


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