... Chemical composition:HS201: Cu >= 98% , Sn <=1%, Si<= 0.5% , Mn<= 0.5% , Zn ----- , Ni ------, P <=0.15%HS211: Cu Bal ... Zn Bal. , Ni------ , P ------5) Main Usage:HS210: Suited For gas welding, oxy-acetylene brazing and /or welding as well as ... frequency brazing copper, steel, nickel copper alloy, grey cast iron as well as Kentanium.Hl105: Suited for Brazing Kentanium. copper brazing alloy welding rod