PHR-4-2 Portable Rockwell Hardness TesterDetailed product description：

Technical parameters of PHR-4-2 portable Rockwell hardness tester

Hardness Scale: Rockwell A, B, C, D, E, F, G, H, K
Surface Rockwell 15N, 30N, 45, 15T, 30T, 45T
Force application method: direct force application
Experimental force:
Rockwell initial test force 98.07N (10kg), total test force 588.4N (60kg)
980.7N（100kg）、1471N（150kg）
Surface Rockwell initial test force 29.42 (3kg), total test force 147.1N (15kg)
294.2 (30kg), 411.3N (45kg)
Allowable sample size:
Minimum diameter of cylindrical specimen: Φ 3mm
Minimum inner diameter of circular tube specimen: Φ 30mm
Hardness test of inner wall of circular tube, minimum inner diameter: Φ 26mm
Minimum thickness of hard steel plate: 0.15mm
Minimum thickness of soft metal sheet: below 0.1mm (up to the minimum value specified in the product standard)
Maximum thickness or diameter of the sample: 1 ", 2", 4 ", 8"
Accuracy: Complies with GB/T230.2-2004