| Standard_ID | YB/T 5257-1993 (YB/T5257-1993; YBT 5257-1993; YBT5257-1993) |
| Summary | This standard applies to the use of nitrogen gas atomization, hot extrusion process for the production of timber densification tungsten-carbon, high vanadium, cobalt high speed steel powder metallurgy. The steel carbide small and are distributed, no macroscopic deflection, with high abrasion resistance, good toughness, excellent grinding characteristics, can be used for processing high-temperature alloys, high-strength steel, titanium and other type of surface complex and sophisticated tool. |