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Webster Hardness Tester
Webster Hardness Tester is Portable, fast, accurate hardness gage available in several models for testing materials such as aluminum, brass, copper and mild steel. Quickly identify tempers. Tests a variety of shapes that other testers cannot check: Extrusions, Tubing and Flat Stock.
All testers operate in the same manner but differ only in penetrator design, type of load spring and hardness ranges. The principle of operation is simple. The work to be tested is placed between the anvil and the penetrator. Pressure is then applied to the handles until "bottom" is felt at which time the dial indicator is read.
Applications for Webster Hardness Testers are:
- Identifies heat-treated from nonheat-treated parts.
- Provides correlation between a bench mounted hardness tester and the production line.
- Segregates materials in stock.
- Differentiates between soft or work-hardened material.
- Identifies parts made from improper or substandard alloys.
- Checks for proper heat-treatment response.
- Useful in conjunction with stationary laboratory hardness testers. Gives a rapid 100% check on parts which would consume many man hours with slower operating test equipment.
- Can be used on assemblies that cannot be brought to the labs.
Webster Hardness Testers Feature:
- One hand operation and portability.
- Round 3/8 inch diameter anvil permits testing a great variety of shapes.
- Simple operation permits readings independent of the operator's skill.
- Test is made by simply applying pressure to the handles until "bottom" is felt.
- Easy-to-read dial indicator with 20 graduations permits use of the tester as "go" and "no-go" gauge.
- Standard hardness gauge tests materials up to 1/4 inch in thickness.
- Increased capacities available up to 1 inch.
The Model B Tester is designed to cover the hardness of aluminum alloys from the 1100 to
the 7075 series. The 20 graduations on the Webster dial indicator covers the range between
25 and 110 on the Rockwell E Scale.
The Model B-75 Tester was developed to obtain more sensitive response to slight changes
in the upper range of hardness covered by the Model B. This sensitivity is particularly useful
in testing mild steel and the stronger aluminum alloys. For brass the B-75 covers the
range from annealed to full-hard. This added sensitivity is accomplished by incorporating
a penetrator of slightly different contour and a heavier load spring than used in the Model B.
The 20 graduations on the Webster dial indicator covers the range between 20 and 100 on
the Rockwell B Scale.
The Model BB-75 Tester was developed to answer the need of certain industries for a method
of rapidly testing the hardness of electro-deposited copper and copper in the low hardness
range. The B-75 penetrator is used to give sensitivity and the Model B load spring is employed
to give light pressures. This combination allows the user to test the soft range of
many common materials.