Mitech MW-20a Webster Hardness Tester

Mitech MW-20a Webster Hardness Tester

Product Overview

The Mitech MW-20a is a handheld Webster hardness tester designed for fast, non-destructive testing of aluminum and aluminum alloy materials. With a clamp-style design, this model allows operators to instantly measure hardness on-site without the need for sample cutting or advanced technical skills.

Engineered for convenience and reliability, the MW-20a is particularly suitable for use in aluminum processing industries, quality inspection facilities, and construction applications such as window, door, and curtain wall manufacturing. It helps assess material properties, heat treatment effectiveness, and alloy compliance efficiently.

Key Features

• Portable and lightweight for single-hand operation

• Enables fast, on-site hardness measurements without damaging the material

• No sample preparation required, ideal for non-destructive testing

• Simple operation, no advanced skills needed

• Suitable for various workpiece shapes, including long and curved profiles

• Sturdy construction that withstands drops up to 0.5 meters without pointer deviation

• Corrosion-resistant body, maintains accuracy after 4-hour exposure to 5% saltwater

• Analog dial display positioned separately for unobstructed reading

• Includes calibration set for quick accuracy checks and adjustment

Applications

• Testing heat treatment effectiveness on aluminum parts

• Verifying alloy composition in production and fabrication

• Inspecting long, heavy, or irregularly shaped aluminum components

• Quality control in aluminum window, door, and curtain wall production

• Project acceptance in aluminum plants and building sites

• Technical inspections in manufacturing and quality assurance departments

Working Principle

The MW-20a operates using the indentation method, where a spring-loaded punch creates a shallow dent on the material surface. The hardness is read on an analog dial calibrated in Webster Hardness units (HW). A higher reading indicates a harder material. These values can also be converted into standard hardness units like HV or HR using conversion charts.

• 0 HW: very soft material or incorrect placement

• 20 HW: full-scale maximum hardness

Specifications

• Measuring Range: 0 to 20 HW

• Resolution Accuracy: 0.1 HW

• Main Unit Weight: 0.5 kg

• Package Dimensions: 29.5 × 21.5 × 12 cm

• Total Weight with Packaging: 1.5 kg

• Communication/Storage: Not applicable

• Working Time: Not applicable (manual operation)

Operating Method and Safety Notes

• Ensure full contact between the sample and the anvil with the surface perpendicular to the indenter

• Apply consistent grip force to avoid inaccurate readings

• Do not twist the workpiece during testing to prevent dial pointer damage

• Avoid dry (air) testing as it may wear out the red indicator needle

• Hold the tester steady until the pointer stabilizes for an accurate reading

• Read the dial directly from above to reduce parallax error

• Do not disassemble the head unit as it contains precision-integrated components

The Mitech MW-20a is a rugged, dependable solution for field and factory hardness inspections, helping manufacturers maintain product quality while optimizing efficiency and cost.