Sumitomo offers T1000A and T1500A uncoated cermet grades

Sumitomo Electric Hardmetal has introduced its T1000A and T1500A grades of uncoated cermet inserts as a cost-effective alternative when performing small batch turning operations to more conventional and expensive coated cermet inserts.

The uncoated Sumitomo T1000A (P10) cermet grade incorporates a dual structure for wear resistance and toughness, and is designed for applications such as fine-finish profiling and continuous high speed cutting of cast iron, soft materials, ferrous powdered metal, high carbon steel and alloy steels. According to Sumitomo, cutting speeds of up to 400 m/min are achievable.

Meanwhile, T1500A (P20) incorporates a series of 3D chipbreaker designs that are said to maintain a high order of resistance to insert fracture and cracking when performing interrupted cutting cycles. A core and outer layer combine to enhance hardness and toughness for increased wear resistance and suppression of cracking. Typical cutting speeds are up to 300 m/min.