Black Hardness File Set, HRC, Packaging Type: Box

For use in all metal working & engineering facilities, comprising of six specially shaped precision files with curved tips, which can reach into internal slots, grooves and bores of parts which cannot otherwise be tested using conventional types of fixed or portable Hardness Testers. Useful for out-of-factory sites, large structures or segments of machinery. For example large surface-hardened gears, large printing cylinders or weld zones of heat affected pipe lines which cannot be moved to a stationary tester. Specifications : 4mm (0.157in)Ø X 180mm(7in) Long Colour INDICATION FILE HARDNESS RANGE Black 65 HRC 62-65 HRC 800-865 HV Yellow 60HRC 60-62 HRC 697-746 HV Orange 55 HRC 55-57 HRC 595-633 HV Blue 50HRC 50-52 HRC 513-544 HV Green 45 HRC 45-47 HRC 446-471 HV Purple 40 HRC 40-42 HRC 392-412 HV