hardness conversion table pdf

Hardness Conversion per ASTM E-140, Strength per ASTM A370, See bottom half of table. Imp. Hardness Conversion Table Brinell Hardness HB 10/3000/15 Rockwell Hardness Superficial Hardness Approx Tensile Dia (mm) HB A 60kg B 100kg C 150kg 15T 15kg 30T 30kg 45T 45kg (KSI) 3.90 241 62 100 23 93 83 73 116 3.95 235 61.5 99 22 93 82.5 72 114 4.00 229 61 98 20.5 92.5 82 71 109 4.05 223 60 97 19.5 … for 10mm Ball Carbide Ball Standard Ball Tons/ inch2 1000lb/ inch 2 kg/ mm Mpa N/mm2 Hardness Number “A” Scale “C” Scales 96 85.6 67.7 900 95 85 67 880 93 84.7 66.3 860 92 84.2 65.5 840 90 83.8 64.8 820 88 83.4 64 800 87 83 63.3 780 86 82.6 62.5 760 … in. They have been independently developed and appear to be consistent with ASTM E-140 and A-370. 150 kg Diamond 60 kg Diamond 100 kg Diamond 15 kg N Diamond 30 kg N Diamond 45 kg N Diamond Vickers 10 kg 500 gm & over 3000 kg 10mm ball 150 kg 1/16" ball 1000 kg lbs/sq. Continued on next page. Worldwide service network | 1-800-473-7838 service@buehler.com Providing service and support that is dedicated to ensuring the highest quality HARDNESS CONVERSION CHART Brinell Tensile Strength Sclerscope Hardness Number Rockwell Diamond Pyramid Scale HV10 HV30 Dia. 1 Hardness Conversion Chart for Non-Austenitic Steels (Rockwell C Range) HV HK HRC HRA HRD HR15N HR30N HR45N HBW 950 917 68.0 85.7 76.9 93.4 84.7 75.9 The conversion values are approximate values only. HARDNESS CONVERSION CHART HRA HRB HRC HRD HRE HRF 15-N 30-N 45-N 30-T 3000 kg 500 kg Rockwell Rockwell Superficial Brinell Vickers Shore 61 98 21 40.9 --- --- 69.9 42.3 20.7 81 228 189 243 35

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