Very narrow contact area with a set back measurement coil. This device is used to measure hardness in grooves and recessed surfaces.
Impact devices: D+15. Impact energy: 11Nmm. Mass of the impact body: 7.8g. Test Tip: Hardness: 1600HV, Diameter: 3mm, Material: Tungsten, Carbide. Impact Device: Diameter: 20mm, Length: 162mm, Weight: 80g
Max. hardness of sample: 940HV, Preparation of surface: Max. roughness depth Rt: 10 mm, Average roughness Ra: 2 mm. Min. weight of sample: Of compact shape: 5kg, On solid support: 2kg, Coupled on Plate: 0.1kg. Min. thickness of sample: Coupled: 3mm, Min. thickness of layers: 0.8mm
Indentation of test tip: With 300 HV: Diameter: 0.54mm, Depth: 24 mm; with 600 HV: Diameter: 0.45mm, Depth: 17 mm; with 800 HV: Diameter: 0. 35mm, Depth: 10 mm.