Specifies requirements for pressure vessels designed and fabricated from austenitic stainless steel, cold-stretched to enhance proof strength and hence generally permit higher design strengths than those specified in AS 1210 and Supplement 1. Two additional classes of vessel identified as Class 1S and Class 2SA are introduced.AS 1210 Supplement 2-1999 Pressure vessels - Cold-stretched austenitic stainless steel vessels (Supplement to AS 1210-1997) was written for use in combination with AS 1210-1997