Austenitic Stainless : A stainless steel whose structure is austenitic at room temperature and which is used for non-magnetic drill collars, etc. (Bul D20)
The Mudblogger (Oilfield, Energy and Related Photographs), Oil Field Glossary, TX, USA 2014. http://mudblogger.com/oilfield-glossary/, (Oil - Amer) {777}