<prompt> In type II gold alloys, ___ Karat gold is used.20 K24 K18 K10 K  <response>: Types of dental casting gold alloys Dental casting gold alloys High carat gold alloy gold alloys by type gold-silver-copper alloys Type 1 - 22K gold alloyType 2 - 20K gold alloyType 3 - 18K gold alloyType 4 - Gold platinum alloy 14K gold alloy Medium carat gold alloyLow carat gold alloy Advances in metallic biomaterials processing applications pg 262 