Machine suitability: The ST21 cutting wheel is suitable for stationary machines in stationary use. Material suitability: The ST21 is specially adapted to steel (black steel also known as structural steel, ST37, S235JR, 1.0037 or carbon steel) and cast steel (e.g. GJS, GJL, etc.). Construction and production: The cutting wheel contains high-quality corundum (aluminum oxide) and 2 full-surface fiberglass fabric. The minimum side load for the cutting disc is according to EN 12413 and OSA 40 N, or from diameter 150 mm 50 N. The expiry date (three years) is stamped in the boring ring. A constant quality is ensured by complex in-process controls in production. To provide a safety Maximum, every one of the thousands of discs is tested in a destructive way. This is a straight-shaped disc (form 41). Cutting discs with a straight shape enable a greater immersion depth and thus also more cuts. The application: The ST21 is characterized by an aggressive cut, a long service life, low spark flight and an excellent quietness. This cutting wheel is particularly useful for economic use. This Rhodius quality tool is particularly suitable for cutting structural steel, tool steel, spring steel, high-alloy steel, high-strength plate, carriers and profiles. Dimensions: The stationary cutting disc with a disc width of 3.0 mm to 4.0 mm is available in diameters from 300 mm to 400 mm. Industries: It is the perfect tool for the various applications and challenges in plant construction, container construction, foundry or cleaning, boiler and container construction, construction steel and pipe construction.This text is machine translated.