Iscar Releases An High Tech Line Of Elevated Performance Carbide Grades For Elevated Productivity

A new family of Iscar turning inserts brings Sumo Tec performance and durability to CVD and DVD carbide grades. In identical tests in a range of turning applications, the inserts outlasted their closest competitors by 26 to 288 percent. The key to the increased life is the Sumo Tec unique treatment, introduced in late 2007 in a limited range of milling inserts, that smooths the coated surface and reduces surface tension stresses in insert coatings. These lead cooler running, enhanced chipping resistance, reduced built up edge and faithfully longer edge life in all workpiece metals. During the alumina coating procedure, internal tension stresses at times cause cracks. The new Sumo Tec treatment induces compression stresses, which helps to seal those cracks. The 7 new Sumo Tec turning grades contain 2 for cast iron; 3 for steel and 1 for heat-resistant alloys and hardened steel. All the most popular insert geometries are accessible from stock, with new geometries being added routinely. 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 dense 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, featuring a tough substrate, MTCVD TiCN and thick Al2O3 coating, targets grey cast iron. It is recommended for interrupted cuts and unstable turning conditions in other metals.

FOR STEEL
IC8150, consisting of a very hard substrate with a cobalt enriched outer layer, MTCVD TiCN and a thick alpha Al2O3 CVD coating. Promoting superior thermal stability and resistance to chipping, this grade is favored 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 excellent thermal stability and resistance to plastic deformation and is favored 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 accomplishes superior shock protection and excellent 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 against its nearest competitor on all three materials, the improvement in tool life was up to 150%.

Key Test Results
Prior to releasing the new SUMO TEC turning tool line, ISCAR tested all grades opposite their closest opponent in a mixture of applications. Here are the key results for grades 5005 and 5010 in cast iron. The improvement was 47% in SAE 1045 steel and 250% in 4140. In forging steel, the cutting edge Sumo Tec insert lasted twice as long.

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