Friday, July 8, 2011

Re: [MW:11629] preheating of austenitic ss

Hi
 
Due to following three main reasons Austenitic Stainless Steel(ASS) are not preheated:
 
1. ASS have a very low Thermal conductivity, thus will retain heat for more time and will lead to more distortion
 
2. ASS have a very high thermal coefficient of expansion. If preheated will result in more distortion
 
3. Preheating will result in a wider HAZ and deteriorate the properties.
 
Regards
 
Prem S Nautiyal

--- On Fri, 7/8/11, khatri ankit <nids01dme011@gmail.com> wrote:

From: khatri ankit <nids01dme011@gmail.com>
Subject: [MW:11627] preheating of austenitic ss
To: "Materials & Welding" <materials-welding@googlegroups.com>
Date: Friday, July 8, 2011, 1:58 PM

Dear Experts,

i want to know the technical reason that "why preheat is not required
in Austenitic SS"

what will the effects of that?

plz clarify me the reason.

Thanks and regards,

Ankit Khatri

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