SS 204Cu

[steelsense]

has any one tested 204Cu stainless steel behavior in seawater?

 

[strider6]

SS 204Cu was developed has a cheaper alternative to SS 304 as you can read in this articles and has, more or less, the same corrosion resistance of SS 304. SS 304 is not recommended for service in SeaWater due to the very low corrosion resistance, low pitting and crevice temperature.

DEVELOPMENT OF TYPE 204 CU STAINLESS,A LOW-COST ALTERNATE TO TYPE 304

http://crswnew.cartech.com/wnew/techarticles/TA00013.html

http://cartech.ides.com/datasheet.aspx?E=248

http://www.corrosionist.com/Corrosion_Control_Seawater.htm

hope this help

S

Corrosion Prevention & Corrosion Control

 

[unclesyd]

Adding to strider6's informative post there is always the problem with stress cracking in the form of Stress Corrosion Cracking".

 

[TVP]

The following link also has some information on 2xx-series stainless steels like 204Cu:

http://www.worldstainless.org/NR/rd...iessteelsAnopportunityorathreattotheimage.pdf

 

[strider6]

this is another good article on SS200

http://www.assda.asn.au/images/stories/oldcontent/19673001161232771640.pdf

S

Corrosion Prevention & Corrosion Control