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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 range of turning applications, the inserts out performed their closest competitors by 26 to 288 percent. The key to the increased life is the Sumo Tec distinctive 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, enhanced chipping resistance, lowered built up edge and faithfully longer edge life in all workpiece materials. During the alumina coating preparation, internal tension stresses at times cause cracks. The new Sumo Tec treatment leads to compression stresses, which assists to seal these cracks. The 7 completely new Sumo Tec turning grades consist of two for cast iron; 3 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 routinely. 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 advocated 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 required.

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 metals.

FOR STEEL
IC8150, consisting of a extremely hard substrate with a cobalt enriched outer layer, MTCVD TiCN and a thick alpha Al2O3 CVD coating. Featuring remarkable thermal stability and resistance to chipping, this grade is suggested for high speed turning of steel subsequent to stable or slightly unstable conditions. It can also handle 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 extensive range of conditions.

IC8350, featuring a very tough substrate under the same outer layers. It accomplishes superb shock opposition 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 releasing the new SUMO TEC turning tool family, ISCAR tested all grades against their nearest opposition in a diversity of applications. 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 cutting edge Sumo Tec insert lasted 2X as long.

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