Fuji Die Co.,Ltd. developed a high-hardness cemented carbide that suppresses strength loss after electrical-discharge machining. It is intended for use as a material for motor-core dies, with trial sales to begin shortly and a full-scale launch targeted for April 2027.
Fuji Die Co.,Ltd. developed a high-hardness cemented carbide that suppresses strength loss after electrical-discharge machining. It is expected to be used as a material for motor-core dies, including dies for punching amorphous alloys. Trial sales will begin shortly, with an official launch targeted for April 2027.
The alloy has an HRA93 hardness, higher than the low 80s for general-purpose cemented carbide, while suppressing the decline in transverse rupture strength from 3500 MPa before electrical-discharge machining to 2240 MPa afterward. This maintains a high level of balance between wear resistance and toughness.
It addresses the strength loss after electrical-discharge machining that commonly occurs in high-hardness materials and aims to provide a good balance compared with ultrafine-grain cemented carbide.
The material is scheduled to be exhibited and unveiled for the first time at JIMTOF2026, which opens at Tokyo Big Sight on the 26th.
The material is primarily intended for use in motor-core dies and is expected to move to mass production after prototyping and demonstration.