Barcol hardness tester is a kind of indention hardness tester. It uses a special shape indenter impressed into the specimen by a standard string pressure and measures the indentation depth to obtain hardness value.Barcol hardness tester is smart and portable. It can be used by single hand operation, no operating experience required, can test any workpiece which is reachable in any site.
1. Model Selection
There are 3 models in Barcol series.
Model 934-1 which is equipped with standard load spring and standard indenter is in widest application. It is used to test aluminum and aluminum alloys, copper and copper alloys, fiber reinforced plastics, other reinforced plastics and unreinforced plastics etc. Its testing range is equivalent to 25-135HBW (500kg, 10mm).The typical Barcol hardness of aluminum and aluminum alloys of different grades and conditions are shown as table 3:
Table 3 Typical Bracol hardness of aluminum alloys
Model 935 which is equipped with softer load spring and standard indenter is used to test softer plastics, soft metals such as ead and tin and wood materials like floor etc. Its testing range is equivalent to 50-110HRR.
Model 936 which is equipped with softer load spring and indenter with bigger cone angle is used to test even softer materials such as leather, felt and soft wood etc.