[MW:9160] Re: Difference between Weldable stainless Steel and Standard grade Stainless steel

Having low carbon is the first defense against intergrannular
corrosion.
Carbon, at a certain temperature, combines with Chromium and forms
Chromium Carbide which precipatates out of the solution leaving some
region of steel (immediate to the grain boundaries) depleted of
chromium, affecting corrosion resistance
When you look at the temperature decay graph in the vicinity of the
weld, there is temperature zone in the HAZ which is ideal for carbide
precipatation.
So we reduce the carbon content of the steel to attain a weldable
stainless steel.

I would suggest going through some literature, you would find plenty.

Regards,

Muhammad Ali

On Jan 8, 6:26 pm, Idris Mohiuddin <idrism...@gmail.com> wrote:
> Dear Experts,
>
> Please share your comments for the following query:
>
> Why does weldable stainless steels (i.e. 316L) contain less carbon than
> standard grade stainless steels?
>
> --
> Mohd idris mohiuddin

--
To post to this group, send email to materials-welding@googlegroups.com
To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com
For more options, visit this group's bolg at http://materials-welding.blogspot.com/
The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.