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321  

 Technical Data

321 is a titanium stabilised austenitic stainless. The addition of titanium helps improve its welding properties. 321 is a stainless grade suitable for operating at temperatures above 300°C. 321 stainless is available in round bar only.

 

Typical Analysis

 321            

C.

Mn.

P.

S.

Si.

Cr.

Ni.

Mo.

Ti.

0.08%

2.00%

0.045%

0.03%

1.00%

17.00-

9.00-

1.00%

5x

max.

max.

max.

max.

max.

19.00%

12.00%

max

%C.

 

 

Physical Properties 321
  Temperature    
 

20ºC

200ºC

400ºC

800ºC

Modulus of elasticity

20000

18500

17000

13500

kg/mm        
Specific heat

0.105

0.125

0.135

0.15

kcal/ºC        
Specific electrical resistance

0.7

0.8

1.0

1.15

(resistivity)        
  Mean value for:    
 

20-100ºC

20-200ºC

20-400ºC

20-800ºC

Coefficient of Thermal Expansion

17

17.5

18

19.5

x10-6 per ºC        
Density g/cm3 at 20ºC

7.9

 

   
Scaling temperature ºC

 875ºC

 

   

 

 

 

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