Indentation hardness indenter
A geometrically defined indenter made of diamond or hard metal used to apply the standardized test force into the material. Its wear-free nature and precise dimensional accuracy are essential for reproducible results.
Physical-Chemical Mechanism of Action
The indentation hardness indenter is pressed into the material to measure hardness at a specific point. The test force is a set value that remains consistent for each measurement. The depth of the impression indicates the material's hardness.
Metallurgical Relevance & Welding Risks
Indentation hardness is often used to check the hardness of weld areas. Too low hardness can lead to brittleness and cracking, while too high hardness can contaminate or damage the material. It is important that the indenter is non-wearable to ensure accurate results.
Workshop Practice & Instructions
Use an indentation hardness indenter made of high-strength diamond or hard metal. Ensure the indenter is precision-machined. Press the indenter into the material with a set force (e.g., 150 N) and measure the impression depth. Read the hardness from a standard table.