Durmat A Teng Tools Teng 7in Wire Cable Cutter Features 1 9 16in Steel Teng 7in Wire Cable Cutter Features Ampoule Saline Solution (8) About this range Tungsten hardfacing rodDURMAT A consists of a special prealloyed tube filled with coarsely grained Fused Tungsten Carbide FTC for oxyacetylene welding The FTC has an exceptionally high hardness of over 2360 HV giving outstanding wear protection to hardfaced areas For special hardfacing on machine parts of unalloyed low alloyed or cast steel with carbon content up to 045 Higher carbon content could lead to cracking Depending on size and composition of the area to be hardfaced the proper rod diameter and grain size should be chosen If the area will encounter heavy abrasion a small grain size is recommended If cutting action is desired a larger grain size is preferable