Type | Range | Approx Size | 1.1 HRC | 20-30, 35-55, 59-65 | 50 mm dia. | 1.2 HRB | 80-100 | 50 mm dia. | 1.3 HRB | 40-70 | 50 mm sq. | 1.4 HRA | As applicable | 50 mm dia. | Brinell Test Blocks | . | . | 1.5 HB 2.5/187.5kgf | 200-250, 250-300, 300-350, 350-400 | 50 mm dia. | 1.6 HB 5/750 kgf And HB 10/3000kgf | 180-200, 200-250, 250-300, 300-350 | 105 mm dia. | 350-400, 400-450, 450-500, 500-600 | 105 mm dia. | 1.7 VICKERS-HV-5 above | 100-150, 180-220, 200-300, 300-400, 400-600, 600-800 | 40mm dia. | 1.8 Low Load Vickers | HV | . | 1.8a HV - 3, HV- 2 HV - 2.5 | 100-150, 200-400, 400-600, 600-800 | . | 1.8b HV - 1 | 100-150, 200-400, 400-600, 600-800 | . | 1.8c HV - 200 gm HV - 300 gm HV - 500 gm | 100-150, 200-400, 400-600, 600-800 | . | Superficial Scale | . | .. | 1.9a 15N, 30N, 45N | 50 mm dia. | . | 1.9b 15T, 30T, 45T | 50 mm dia. | . | Test Blocks | Hardness Range | Size | 1.10 HB 10/1000 1.11 HB 10/500 1.12HB 5/500 1.13 HB 5/250 1.14 HB 2.5/62.5 1.15 HB 5/62.5 1.16 HB 2.5/31.25 1.17 HB 2.5/ 15.625 | 90-120 HB 90-120 HB 90-120 HB 90-120 HB 90-120 HB 90-120 HB 90-120 HB 90-120 HB | 100 mm dia. 100 mm dia. 100 mm dia. 100 mm dia. 50 mm dia. 100 mm dia. 50 mm dia. 50 mm dia. |
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