This refers SS304L material to be used for the job.  You had suggested to use material having Molybdenum content of 0%.  Following are facts about the same. 
1. ASME code has no specifications about the 'Moly' content in the SS304material.
2.The mill test certificate also doesn't mention the moly content though it is present in general.  Typically the 'moly' content in SS304 ranges from 0.2-0.3 to 0.5%.
3. We specifiaclly got our material analyzed for Moly content and found to be in the range between 0.016 to about 0.2 %.  

Material with 0% Moly is not available.  Hence we are going ahead with this material.  This is for your reference and record. Please post your comment, if any, immediately.           