Mitech MW-20 Webster Hardness Tester

Mitech MW-20 Webster Hardness Tester

Product Overview

The Mitech MW-20 is a compact, portable Webster hardness tester designed for rapid, non-destructive hardness testing of aluminum and aluminum alloy materials. Utilizing a clamp-style mechanism, it allows operators to quickly measure hardness directly on finished products without cutting samples or using complex instruments.

With its lightweight structure and user-friendly operation, the MW-20 is ideal for field inspections, quality control on production lines, and acceptance testing in the aluminum window, door, and curtain wall industries. It delivers immediate results in Webster hardness units (HW) and helps verify alloy selection, heat treatment status, and overall material quality.

Key Features

• Compact and lightweight design allows for one-handed operation

• Enables quick, on-site, non-destructive hardness testing without damaging the material

• No need for sample cutting or advanced technical skills

• Analog dial display provides clear, immediate hardness readings

• Suitable for measuring curved, flat, long, or heavy workpieces

• Durable construction resists pointer deviation even after repeated drops

• Corrosion-resistant body withstanding 4 hours in 5% saltwater without accuracy loss

• Separate dial display reduces obstruction and improves readability

• Calibration block included for fast reference checks and maintenance

Applications

• On-site verification of heat-treated aluminum parts

• Inspection of aluminum alloy type and composition during manufacturing

• Quality control for aluminum doors, windows, and curtain wall components

• Assessment of long or bulky aluminum parts unsuitable for benchtop testers

• Engineering and contractor acceptance of aluminum structure components

• Technical inspections in aluminum fabrication workshops and QC departments

Working Principle

The MW-20 measures hardness based on the indentation method. A spring-loaded punch is applied to the test surface, and the resulting indentation depth is inversely proportional to the hardness. The hardness value is displayed on a dial calibrated in HW (Webster Hardness) units. A higher number indicates a harder material. This value can be converted to other scales like HV or HR using reference charts.

Specifications

• Measuring Range: 0 to 20 HW

• Resolution: 0.1 HW

• Weight of Main Unit: 0.5 kg

• Total Weight with Packaging: 1.5 kg

• Package Dimensions: 29.5 × 21.5 × 12 cm

• Working Time: Not specified (manual operation)

• Data Communication: Not supported

Operating Conditions

• Test surface must be perpendicular to the indenter

• Ensure full contact with the anvil during measurement

• Apply steady pressure without twisting or rotating the workpiece

• Avoid dropping or air-testing the device, which can damage the pointer

• Always read the dial directly from above to reduce parallax error

• Do not disassemble the meter head, as it contains integrated precision components

The Mitech MW-20 is a durable, efficient, and easy-to-use solution for on-the-spot aluminum hardness testing, helping manufacturers and inspectors improve quality assurance and reduce production costs.