A Portable, Fast, Accurate Hardness Gauge Available in Several Models for Testing Materials such as Aluminum, Brass, Copper and Mild Steel.
Webster Hardness Testers
Webster portable hardness testers are made in three distinct models for testing brass, aluminum, copper, and mild steel. They allow you to quickly identify tempers and test a variety of shapes that other models simply cannot check—including tubing, extrusions, and flat stock.
Every one of Webster's hardness tester models operates in the same manner. The only differences are in the type of load spring, hardness ranges, and penetrator design.
Model B Webster Hardness Tester
The Model B Webster Hardness Tester is designed to cover the hardness of aluminum alloys from the 100 to the 7075 series. The 20 graduations on the dial indicator cover the range between 25 and 110 on the Rockwell E Scale.
Model B-75 Webster Hardness Tester
Developed to obtain a more sensitive response to slight changes in the upper range of hardness covered by the Model B, the Model B-75 Webster Hardness Tester is particularly useful in testing the hardness of stronger aluminum alloys as well as of mild steel. The B-75 Webster Hardness Tester covers the range from annealed to full-hard for brass. It is accomplished by incorporating a penetrator of slightly different contours and a heavier load spring than used in Model B, and the 20 graduations on the dial indicator cover the range between 20 and 100 on the Rockwell B Scale.
Model BB-75 Webster Hardness Tester
Certain industries needed a method of rapidly testing the hardness of electrodeposited copper in the low hardness range. The Model BB-75 Webster Hardness Tester was the solution. This penetrator is used to give sensitivity while the Model B load spring is employed to give light pressure. This combination allows users to test the soft range of many common materials.
Operation of Webster Hardness Testers
The operation of Webster Hardness Testers is simple. The work being tested is placed between the anvil and the penetrator. Pressure is then applied to the handles until the “bottom” is felt, then the dial indicator is read.
