... .These Gaskets are manufactured in different solid metal types like soft iron/SS304/316/321 metal and other alloy items.They ... )6.Standard:ASME B16.20 7.Material:carbon steel,soft iron,inconel600.M-400,C-276,SS316,SS3048.Application:vale,gate,flange,oil ... &gas industry, 9.Hardness and Temperature MaterialMax Hardness(HB)Max Temperature(degrees)soft ...