Hardness Testing

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Test Names Parameters Standard Range/ Specification Country of origin Accuracy Resolutions Required Time (hrs)
Hardness (Rockwell, Superficial & HV) Scale for HRB ASTM E18, ISO 6508-2 Scales A, B. C, D, E, F, G, H, N Japan 1-2% 15-150kgf 30
Scale for HRC Japan 1-2% 15-150kgf 30
Scale for HRN Japan 1-2% 15-150kgf 30
HV (Load 2 kg to 50 kg) ASTM E92, ASTM E384 2-50 kgf Japan ±1% 1-50 kgf 60
HV (Load 0.02 kg to 2 kg) 0.02-2 kgf Japan 1-2.5% 0.02-2 kgf 120
Hardness (Rubber) IRHD (30-100 IRHD M) ISO 48-2:2018 30-100 IRHD M Japan ±2 units 30-100 IRHD M 10
Shore A ISO 7619-1 HA: 10-90 Japan 1-2% HA: 10-90 10

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