ISO 148-1 Metallic Materials - Charpy Pendulum Impact Test

EUROLAB, with its state-of-the-art accredited laboratories and expert team, provides precise and fast testing services within the scope of ISO 148-1 testing. This part of the ISO 148-1 standard, developed by the international standards organization (ISO), describes the Charpy pendulum impact test method for determining the energy absorbed in the impact test of metallic materials.

Charpy impact test, or test Charpy V-notch test is a high tensile rate test. During this test, a pendulum, which is rotated at a certain height, is struck by a standard notched sample, and the impact trace is examined.

With the knock test, the amount of energy absorbed by the sample during striking is measured. The standard Charpy-V notch example is a 55 millimeter long by 10 millimeter rectangle. There is a 0,25 millimeter deep notch on one side with a 2 millimeter tip radius.

The amount of energy absorbed by the test sample during breakage is measured and this value is an indication of the notch toughness of the material. The pendulum swings during the test, and the height of the swing is a measure of the amount of energy absorbed in breaking the sample. In general, the test is repeated three times and the results are averaged. Alternatively, tests are performed at various temperatures to create a transition curve.

The ISO 148-1 standard describes the V-notch and U-notch Cahrpy test methods. With these tests, it is understood whether a metal can be classified as brittle or ductile.

EUROLAB assists manufacturers with ISO 148-1 test compliance. Our test experts, with their professional working mission and principles, provide you, our manufacturers and suppliers, the best service and controlled testing process in our laboratories. Thanks to these services, businesses receive more effective, high-performance and quality testing services and provide safe, fast and uninterrupted service to their customers.