Ames Flat, Raised, Round, Convex, Cylindrical and Vee Anvils
There are 5 types of Ames anvils available for your Ames tester. You can reverse the position of your penetrator and anvil to conduct internal hardness tests as well.
The anvil plays an important part in testing hardness. Using the correct anvil with your Ames tester ensures you will receive valid readings. The Anvil makes sure your work does not move during the work build-up step of hardness testing. Anvils are interchangeable (see video below).
The chart below shows what each anvil looks like and how it works:
Raised Flat Anvil:
Raised flat Anvils were designed to put the least amount of pressure on very thin stock. Of course, less pressure equals fewer indentation marks as well. These anvils are generally used with superficial testers. You can test materials as thin as .006 with an Ames tester
You can use Convex anvils to test the inside hardness of tubes. this anvil comes standard with our Model 1-ST superficial tester.
You should use a cylindrical anvil to test large round stock.