

Table 36. 



Chemical 



Compositions of 200 Series 



stainless Steels, Percent by Weight 



Alloy 



C 



Mn 



P 



S 



Si 



Ni 



Cr 



Fe" 



c b 



Source 



AISI 201 



0.08 



6.8 



_ 



— 



- 



4.0 



17.1 



R 



INCO(3) 



AISI 201 



0.14 



7.0 



- 



0.009 



- 



4.5 



16.5 



R 



NADC (7) 



AISI 202 



0.09 



7.6 



- 



- 



- 



4.5 



17.8 



R 



INCO(3) 



AISI 202 



0.13 



7.9 



— 



0.007 



— 



5.2 



17.0 



R 



NADC (7) 



a R = remainder. 

 Numbers refer to references at end of report. 



Table 37. Corrosion Rates and Types of Corrosion of 200 Series Stainless Steels 



Alloy 



Environment 



Exposure 



Depth 





Co 



rrosion 





c c 



Source 





Maximum 



Crevice 









(day) 



(ft) 



Rate 

 (mpy) 



Pit Depth 



(mils) 



Depth* 

 (mils) 



Type . 





AISI 201 



W 



123 



5,640 



<0.1 







I 



I-C 



INCO (3) 



AISI 201 



W 



123 



5,640 



<0.1 











NC 



NADC (7) 



AISI 201 



S 



123 



5,640 



<0.1 











NC 



INCO (3) 



AISI 201 



W 



403 



6,780 



<0.1 







I 



I-C 



INCO (3) 



AISI 201 

 AISI 201^ 



W 



403 



6,780 



- 



- 



s 



S-C 



NADC (7) 



W 



403 



6,780 



- 



- 



- 



WB (NC) 



NADC (7) 



AISI 201 



s 



403 



6,780 



<0.1 







2 



C 



INCO (3) 



AISI 201 



w 



751 



5,640 



<0.1 







I 



I-C 



INCO (3) 



AISI 201 



w 



751 



5,640 



- 



- 



S 



S-C 



NADC (7) 



AISI 201 



s 



751 



5,640 



<0.1 











NC 



INCO (3) 



AISI 201 



w 



1,064 



5,300 



<0.1 







I 



I-C 



INCO (3) 



AISI 201 



s 



1,064 



5,300 



0.5 



50 



1 



I-CiP (PR) 



INCO (3) 



AISI 201 



w 



197 



2,340 



<0.1 







4 



C 



INCO (3) 



AISI 201 



w 



197 



2,340 



- 



- 



S 



S-C 



NADC (7) 



AISI 201 



s 



197 



2,340 



<0.1 







3 



C 



INCO (3) 



AISI 201 



w 



402 



2,370 



<0.1 







1 



c 



INCO (3) 



AISI 201 



w 



402 



2,370 



- 



- 



S 



S-C; WB (S-C) 



NADC (7) 



AISI 201 



s 



402 



2,370 



<0.1 







2 



C 



INCO (3) 



AISI 201 



w 



182 



5 



<0.1 







I 



I-C 



INCO (3) 



AISI 201 



w 



366 



5 



0.6 











S-E 



INCO (3) 



AISI 202 



w 



123 



5,640 



<0.1 











NC 



INCO (3) 



AISI 202 



w 



123 



5,640 



<0.1 



- 



- 



NC 



NADC (7) 



AISI 202 



s 



123 



5,640 



<0.1 











NC 



INCO (3) 



AISI 202 



w 



403 



6,780 



<0.1 







I 



I-C 



INCO (3) 



AISI 202 



s 



403 



6,780 



<0.1 







I 



I-C 



INCO (3) 



AISI 202 



w 



751 



5,640 



<0.1 







I 



I-C 



INCO (3) 



AISI 202 



s 



751 



5,640 



<0.1 







I 



I-C 



INCO (3) 



136 



