SS303 is one of the most widely used stainless steel grade. This grade is written as 1.4305 or X8CrNiS18-9 according to EN norm and it is written as UNS S30300 according to UNS norm. 1.4305 stainless steel has one of the best machinability in austenitic stainless steel grades. 1.4305 material is really close to 304 grade stainless steel and the