t72301 t72302 t72305 uns w108commercial aisi AISI W1 (T72301) Water-Hardening Steel : MakeItFrom
W1 is the AISI designation for this material. T72301 is the UNS number. It has the highest thermal conductivity among the tool steels in the database. The properties of AISI W1 steel include two common variations. This page shows summary ranges across both of them. For more specific values, follow the links immediately below.