NM01PROBED

The Probe D is the standard impact device utilized in Leeb hardness testing, a dynamic method for determining the hardness of metallic materials. This impact device is designed for versatility and is the most frequently employed type for a wide array of general hardness testing applications.

The Probe D operates with an impact energy of 11 Nmm and features an impact body with a mass of approximately 5.5 grams. Its indenter is a durable 3 mm diameter spherical tip made of tungsten carbide, boasting a hardness typically around 1600 HV.

This standard impact device is generally appropriate for testing metallic materials with a minimum thickness of 5 mm without coupling and can test down to 3 mm with proper coupling to the test surface. For accurate measurements, the recommended surface roughness (Ra) of the test specimen is typically ≤ 1.6 µm. The Probe D is effective for measuring hardness values up to approximately 68.5 HRC, with a maximum measurable specimen hardness of around 940 HV on the Vickers scale.

The physical dimensions of the Probe D impact device are typically around 20 mm in diameter and 147 mm in length, with a weight of approximately 75 grams. Compact versions, designated as Type DC, are also available for use in more confined spaces, featuring a shorter length (around 86 mm) and lighter weight (around 50 grams) while maintaining the same impact energy and impactor mass