PMI SPECIALISTS, INC "WHEN YOU NEED TO KNOW"
Hardness Testing
By performing hardness testing on metals and alloys, a lot of information can be obtained, such as ultimate tensile strength, heat treatment condition and welding quality. All hardness testing machines at PMI Specialists are calibrated to meet ISO 17025 standards to ensure accurate results.
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Rockwell Hardness
- Rockwell is the most
commonly used
metal hardness scale. PMI Specialists tests on the HRB and HRC scales
based on ASTM E18 standard.
-
Microhardness (Vickers and Knoop)
- PMI Specialists
performs automatic
Vickers and Knoop microhardness testing with indentation loads from 10
g to 2 kg based on ASTM standard E384. Microhardness is considered
non-destructive compared to Rockwell or Brinell testing. It is very
useful on small sized samples or coatings. Microhardness is also
extensively used to characterize case hardening properties,
carburization depth, secondary phase particles and weld profile (weld
metal, heat affected zone and base metal).
