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A original family of Iscar turning inserts brings Sumo Tec performance and strength to CVD and DVD carbide grades. In like tests in a variety of turning applications, the inserts outlasted their nearest competitors by 26 to 288 percent. The key to the lengthened life is the Sumo Tec specialized treatment, introduced in late '07 in a limited range of milling inserts, that flattens the coated surface and decreases surface tension stresses in insert coatings. These result cooler running, better chipping resistance, diminished built up edge and faithfully longer edge life in all workpiece metals. During the alumina coating process, internal tension stresses occasionally cause cracks. The new Sumo Tec treatment induces compression stresses, which helps to seal those cracks. The 7 revolutionary Sumo Tec turning grades consist of two for cast iron; 3 for steel and one for heat-resistant alloys and hardened steel. All the most desired insert geometries are available from inventory, with new geometries being added regularly. Iscar also plans to add new grades additionally.

Here are the grades available:

FOR CAST IRON
IC5005, with a hard substrate, MTCVD TiCN and thick Al2O3 coating, is endorsed mainly for nodular cast iron. It also handles other cast irons at medium to high cutting speeds at stationary or slightly unstable conditions. This grade may be used in hard cast irons when unusually high wear resistance is essential.

IC5010, presenting a tough substrate, MTCVD TiCN and thick Al2O3 coating, targets gray cast iron. It is favored for interrupted cuts and unstable turning conditions in other materials.

FOR STEEL
IC8150, consisting of a exceptionally hard substrate with a cobalt enriched outer layer, MTCVD TiCN and a thick alpha Al2O3 CVD coating. Promoting fantastic thermal stability and resistance to chipping, this grade is suggested for high speed turning of steel under stable or slightly unstable conditions. It can also cope with stainless steel and interrupted cuts in nodular cast iron.

IC8250, a tough substrate with the same outer layers. It features exceptional thermal stableness and protection to plastic deformation and is favored for general machining of alloyed and stainless steel in a comprehensive range of conditions.

IC8350, featuring a very tough substrate under the same outer layers. It delivers remarkable shock resistance and great wear resistance on alloyed and stainless steel.

For Alloys, Stainless Steel and Hardened Steel
IC807, with a tough submicron substrate under a TiAlN PVD coating, is fitting for turning heat resistant alloys, austenitic stainless steel and hard steel at low to medium cutting speeds. In a test against its closest competitor on all three materials, the improvement in tool life was up to 150%.

Key Test Results
Prior to unveiling the new SUMO TEC turning tool family, ISCAR tested all grades opposite their nearest competitors in a diversity of operations. Here are the crucial conclusions for grades 5005 and 5010 in cast iron. The advancement was 47% in SAE 1045 steel and 250% in 4140. In forging steel, the completely new Sumo Tec insert lasted twice as long.