Mitech MW-B75 Webster Hardness Tester
Product Overview
The Mitech MW-B75 is a handheld Webster hardness tester designed specifically for aluminum and soft alloy materials. Part of Mitech’s MW series, it offers fast, non-destructive hardness testing (NDT) without the need for sample cutting or preparation. Its clamp-style, one-hand operation makes it particularly well-suited for fieldwork, production lines, and quality inspection departments.
This device is commonly used in industries related to aluminum processing, including window, door, and curtain wall manufacturing, as well as engineering quality control and acceptance inspections. It’s a vital tool for increasing production efficiency and reducing inspection costs.
Functions & Applications
Determine whether a workpiece has been heat-treated
Identify improper alloy compositions
Test long or heavy components not easily moved
Conduct on-site inspections at aluminum manufacturing plants
Verify product quality in construction-related industries (windows, doors, curtain walls)
Working Principle
The MW-B75 operates on the indentation principle: the depth of the indenter’s mark is inversely proportional to the hardness of the material. The measured hardness (Webster Hardness or HW) is read directly from the analog dial.
Values range from 0 to 20 HW
Readings above range: pointer moves to 20
Readings below range: pointer remains at 0
Results can be converted into other standard hardness values such as HV or HR using conversion charts.
Instrument Features
Corrosion-resistant and impact-tested: Maintains precision after 4 hours in 5% saltwater and 100 drop tests from 0.5 meters
Compact and lightweight: Easily operated with one hand for fast, on-the-spot hardness checks
Non-destructive testing: No need for sample extraction
Easy to operate: No specialized training required, ideal for routine production environments
Versatile measurement: Suitable for a wide variety of aluminum shapes and sizes
Equipped with calibration blocks: Allows quick recalibration if needed
Separate display and handle: Ensures reading visibility is not blocked during testing
Operating Instructions & Precautions
Insert the specimen between the anvil and the indenter.
Press down the handle until the end of travel is felt—this is the correct pressure point.
The dial will then indicate the hardness value. Excessive force is not necessary and does not damage the instrument.
Keep the handle steady while reading the result.
Avoid any twisting or shifting of the sample during the reading process, as it may cause inaccurate results.
