Starting price
฿125,000
/ HRC
Mitutoyo HR-200 Rockwell Hardness Tester
Model: HR-200
The Mitutoyo HR-200 Rockwell hardness tester supports HRA, HRB, HRC, HRD, HRE, HRF, HRG, HRH, and HRK scales. It provides direct digital HRC readout with ±1 HRC accuracy and a 20–100 HRC measuring range. Widely used in Thai steel, heat treatment, and automotive parts manufacturing to verify hardness against material specifications. Calibration uses ISO 6508-certified hardness reference blocks traceable to NIMT.
Meas. Range
20–100 HRC
Accuracy
±1 HRC
Specifications
| Accuracy | ±1 HRC |
| Standard | ISO 6508, JIS B 7726, ASTM E18 |
| Indenter (HRC) | Diamond Brale (120° cone) |
| Measuring Range | 20 – 100 HRC |
| Supported Scales | HRA, HRB, HRC, HRD, HRE, HRF, HRG, HRH, HRK |
| Pre-load / Total load (HRC) | 98.07 N / 1471 N |
Use Cases
Verifying hardness of steel, shafts, gears, and automotive components after heat treatment to confirm hardness is within specification.
Frequently Asked Questions
How often should a Rockwell hardness tester be calibrated?+
Per ISO 6508, verify with a reference block before each day's use. Formal calibration of the indenter and load cell is required every 12 months.
What is the difference between HRC and HRB?+
HRC uses a diamond Brale indenter with 150 kgf load for hard materials like hardened steel. HRB uses a 1/16" ball indenter with 100 kgf for softer materials like aluminum and brass.
What minimum specimen thickness is needed for accurate results?+
For HRC, specimen thickness must be at least 10× the indentation depth (approximately 0.5 mm minimum). The test surface must be smooth, flat, and parallel to the support surface.
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