Portable hardness tester SHAHE/W-20a 0-20HW 1HW ±0.5HW/Hardness Tester

for aluminum

Features 1. Mainly used to measure the aluminum alloy (1100-7075). 2. Hardness measuring range: 0-20HW (aluminum and aluminum alloy 25-110HRE) (Copper alloy 60-90HRF). 3. Accurate measurement range: 5-18HW (determined by the instrument design principle). 4. Accuracy: ±0.5HW 5. Resolution: 1HW 6. Measuring thickness: 0.6-13mm (anvil diam 10mm) (anvil cylinder diam 23.5mm) How it works Webster hardness is a kind of indentation hardness tester. Under certain force, press the indenter into the test sample surface, the pressing depth is in inverse proportion of the hardness tester symbol is HW. Fro the over-range sample test, the pointer dose not move and indicates still against the left side of the case when under force. How to use Put the measured object in the position between anvil and indenter, then hold the upper and lower handle, press with force, and draw the lower handle close to the upper handle, at the same time, the indenter touch the measured object, until it does not move any more. Now the indicator readout is the Wechsler harness value. It can be converted into Vickers and Rockwell and other hardness values according to the appendix table.