810-298-10 Impact Type Hardness Tester, Model Hardmatic HH-411

The HH-411 is a rebound type portable hardness tester for metal with a compact body and high operability. It allows anyone to perform hardness testing easily at the touch of a key, so can be used widely on various types of workpiece in the field. In addition to the general-purpose impactor (D type) supplied as standard equipment, the impactor lineup includes many variations (available separately) to support special applications. The DC type is provided for hardness testing of internal walls of pipes with diameters that cannot be tested with the D type, the D+15 type for bearings and gears, and the DL type for small areas such as the bottom of small gear teeth and weld corners. For the rebound type hardness tester, gravity affects the measurement result depending on the orientation of the impactor relative to the vertical when pressed against the specimen surface. The HH-411 is equipped with the latest measurement technology that automatically detects the orientation of the impactor to automatically correct for this effect, so maximum accuracy is always achieved. Only a small surface area on a workpiece is required for hardness testing (standard D type: ø22 mm; optional DL type: ø4 mm). Therefore the HH-411 can be used for testing of various specimen shapes such as around grooves and gear teeth. Up to 1800 hardness test results can be saved, which is useful for patrol tests in the field. Based on the hardness HL value (L value: according to ASTM A 956), conversion can be performed to Vickers, Brinell, Rockwell C, Rockwell B, and Shore hardness as well as tensile strength. Conversion can be performed after the test, or hardness value can be displayed in conversion mode. To operate, the impactor is pressed against the sample surface and the button is pushed with a finger just like clicking a ballpoint pen, so is very easy for anyone to operate.