- Portable works with rechargeable lithium ion battery.
SONOHARD Hardness Tester
SH-21
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The SH21 is very easy to use and requires no special knowledge of hardness testing in order to operate the instrument. The unit includes all four hardness scales and you can switch between them at the touch of a button
FEATURES
 | Quick measurement (few seconds). |
| Best repeatability and precision. |
| Direct reading of hardness. |
| Easy to use hand held probe can be quickly applied to a variety of surfaces from any direction. |
| Easy to use - no prior experience of hardness measurement techniques required. |
| Built in memory for data and calibration points. |
| Measures Vickers, Rockwell, Brinell and Shore scales. |
| Interchangeable probes for use with different surface profiles, pipes, concave surfaces, gears valves etc. |
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APPLICATIONS
| Evaluation of carburizing, standard quenching and high-frequency quenching |
| Weld hardness measurement for welded structures (tanks, hulls, bridges, steel towers ,etc.) |
| Hardness measurement for a gear tooth flank (narrow area) |
| Measurement of structural strength or hardness of a facility |
| 100% online inspection for components (engine valves, rack bars, crankshafts, bearings, etc.) |
Download Sonohard SH-21 Hardness Brochure in PDF format
SPECIFICATIONS
| Measuring Indenter | Diamond indenter for Micro-Vickers (facing-to-surface angle of 136 deg) |
| Measuring load | Approx 1kgf (roughly 10N) Approx 2kgf (roughly 20N) Approx 4kgf (roughly 40N) (These loads indicate those in typical applications. As the specification varies according to the object to be measured, please contact us for details.) |
| Measuring range | Rockwell hardness: HRC10.0 to HRC70.0 Vickers hardness: HV50 to HV999 Shore hardness: HS20.0 to HS99.9 Brinell hardness: HB85 to HB550 |
| Reproducibility | HRC:± 1.0HRC , HV : ± (3%rdg)HV , HS: ± 1.0HS , HB : ± (3%rdg)HB |
| Power source | AC adapter (100 to 240V) or lithium ion rechargeable battery |
PICTURE
