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321       ESPECIFICAÇÕES TÉCNICAS

 

321 stainless is a titanium stabilized grade commonly used for service in the 1000-1600°F temperature range. For service temperatures up to about 1600°F, a stabilizing treatment at 1550-1650°F, air cool, may be used to provide optimum resistance to intergranular corrosion and to polythionic acid stress corrosion cracking.
321 stainless is readily welded by all common methods including submerged arc. Appropriate weld fillers are AWS ER347 bare wire and E347 covered electrodes. 321 stainless is similar in machinability to 304 stainless steel. It has a machinability rating of 45% relative to AISI B1112.


Chemical Composition, %

 

 

Cr

Ni

Mo

Cu

Ti

C

Mn

Si

P

S

N

Fe

MIN

17.0

9.0

-

-

5x(C+N)

-

-

0.25

-

-

-

-

MAX

19.0

12.0

0.75

0.75

0.7

0.08

2.0

1.0

0.04

0.03

0.1

Balance

 


Specifications

UNS: S32100 W. Nr./EN: 1.4541 AMS: 5510, 5645 ASTM: A 240, A 276, A 312, A 479 GE: B50T1181, B50T12, B50T81
ASME: SA-240, SA-276, SA-312, SA-479 QQS: 766d, 763


Common Trade Names

321, 321 Stainless, Alloy 321



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