Iscar Releases An Ground Breaking Line Of Elevated Performance Carbide Grades For Increased Production

A cutting edge family of Iscar turning inserts brings Sumo Tec performance and strength to CVD and DVD carbide grades. In the same tests in a variety of turning applications, the inserts outlasted their nearest competitors by 26 to 288 percent. The key to the longer life is the Sumo Tec specialized treatment, introduced in late 2007 in a limited range of milling inserts, that perfects the coated surface and decreases surface tension stresses in insert coatings. These result cooler running, greater chipping resistance, reduced built up edge and reliably longer edge life in all workpiece materials. During the alumina coating process, internal tension stresses at times cause cracks. The new Sumo Tec treatment leads to compression stresses, which assists to seal these cracks. The seven new Sumo Tec turning grades consist of two for cast iron; three for steel and 1 for heat-resistant alloys and hardened steel. All the most desired insert geometries are offered from inventory, with new geometries being added frequently. Iscar also plans to add new grades as well.

Here are the grades available:

FOR CAST IRON
IC5005, with a hard substrate, MTCVD TiCN and thick Al2O3 coating, is recommended mainly for nodular cast iron. It also handles other cast irons at medium to high cutting speeds at stable 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 endorsed for interrupted cuts and unstable turning conditions in other materials.

FOR STEEL
IC8150, consisting of a very hard substrate with a cobalt enriched outer layer, MTCVD TiCN and a thick alpha Al2O3 CVD coating. Featuring fantastic thermal stability and resistance to chipping, this grade is endorsed for high speed turning of steel subsequent to 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 recommended for general machining of alloyed and stainless steel in a wide range of conditions.

IC8350, featuring a very tough substrate under the same outer layers. It delivers remarkable shock resistance and desirable 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 suitable for turning heat resistant alloys, austenitic stainless steel and hard steel at low to medium cutting speeds. In a test opposite to its closest competitor on all three materials, the advancement in tool life was up to 150%.

Key Test Results
Prior to launching the new SUMO TEC turning tool line, ISCAR tested all grades against their nearest challengers in a diversity of functions. 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 new Sumo Tec insert lasted twice as long.

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