Why is it important to use an Anvil?
Anvils help ensure accurate test results by supporting the test specimen during the application of the major load during a hardness test. Rockwell anvils are compatible with most Rockwell hardness testers. Contact our customer service department or your sales representative with any compatibility concerns with your tester(s)
What happens if I don’t use the proper anvil for my test specimen?
Just one regular Rockwell hardness number represents a vertical movement of the penetrator of only 0.002mm, or 80 millionths of an inch (0.000080 inch) One superficial Rockwell number represents a vertical movement of 40 millionths of an inch (0.000040 inch). A vertical shift of the part being tested of only 0.001 in. will lower the Rockwell reading by more than 10 numbers on the regular and 20 numbers on the superficial scale.