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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%. See the
applications guide for more information.
Strengths
- Rapid test, usually less than 10 seconds
- Direct readout, no questionable optical measurements required.
- Non-destructive, part normally can be used.
Weaknesses
- Multiple test scales (30) needed to cover the full range of metal hardness.
- Conversions between scales can be material dependant.
- Samples must be clean and have a smooth test point to get good results.
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