|
|
Banner at right --> cycles thru India-based suppliers |
|
![]() |
Letter 37062 SS 431 corrosion resistance [India]+++++ What are the steps to follow to get atleast 200 hrs of No
corrosion in a Salt Spay test ( BS EN 248 ) done on a SS431 matl rods
used as a plunger in water solenoid valves. RAGHU
+++++ Heat treat and temper have to do with hardness. Centerless
grinding is a choice of finishing methods. Electro polish can go a
long way to improving the salt spray test results. 431 does have 1.25
to 2.5 % nickel, so it has a chance at passing a 200 hour test, but I
have doubts. After EP, it is only going to take one fingerprint or
being touched by a steel tool, such as a micrometer to have it
fail. James Watts
Dear Reader: please choose what you want to do--
![]() |
|
Save
This Page (why?) - Home - ©1995-2008 finishing.com