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:
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