They are as thin as possible in relation to the diameter to remove an absolute minimum of material, a critical factor when sectioning expensive materials. Thin cut-off wheels limit the thermal damage and mechanical deformation during cutting. This again reduces the following grinding and polishing time.
Aka-Cut 1000 HV, based on Al2O3, is the optimal choice when cutting ferrous metals with a hardness of 500-1000 HV.
Aka-Cut 700 HV, based on Al2O3, is optimised for cutting ferrous metals with a hardness of 150-700 HV.
Aka-Cut 400 HV, based on SiC, is the best choice when high precision cutting of non-ferrous metals with a hardness of 50-400 HV is required.
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