I am not sure if this is the place to ask...but I don't have any other resource that I can tap into that has such a wide and varied body of knowledge. We have supplied raw product that is identical in dimension and is shipped in the same containers. The material is tagged with a part number. However the possibility exists (and is indentified on the PFMEA) that the material received could be the incorrect grade of steel. is there a method that could be used, on the production line, to could quickly identify the material as either 1020 or 1045 steel? We could take a sample to the lab and perform a hardness test but I am trying to see if there is a method that could be used without the lab.