Rockwell Hardness Test Applications

With the two test ranges available, the Rockwell test can be used on almost any metal sample as well as some hard plastics. The test can normally be performed in less than 10 seconds and the indent is usually small enough to allow the part to be used. Some parts with a critical hardness specification are tested 100%.

Strengths

1. Rapid test, usually less than 10 seconds
2. Direct readout, no questionable optical measurements required.
3. Non-destructive, part normally can be used.

Weaknesses

1. Multiple test scales (30) needed to cover the full range of metal hardness.
2. Conversions between scales can be material dependant.
3. Samples must be clean and have a smooth test point to get good results.