Before selecting material first have to check application of fittings with compliances of material, like Brass almost non corroded material but have lead contain mostly 3% in general but also available in different Graded alloy i:e lead free brass, low lead brass, while presently in Global Studied still ongoing in some areas for using same. Most food and beverage industries change over Stainless Steel Fitting due to long life and industrial purposes. For Pricing View as well instead of Graded Brass or Copper Alloy, Stainless Steel Fitting More competitive. Again Stainless Steel Prefer with Different alloys as per working pressure, temperature and conditions Like in SS316, SS316L, SS304, SS303