Technical

Info
Conversion Factors
Corrosion Resistance Data
Equivalents of Std Wire Gauges
Fractions of Inches
Hardness Comparison Table
Nominal Composition of SS
Pipe Working Pressures
Useful Conversion Formulae
Theoretical Mass Calculation

Hardness Comparison Table

Vickers' Hardness (DPH) Brinell Hardness 10mm Diam Ball Load: 3000 kg Rockwell Hardness (2) Rockwell Special Hardness Special Brale Equipment Shore Hardness Tensile Strength (100sq/m2 approx) Vickers' Hardness Load: 50kg
Std Ball Hultgren Ball Tungstic Carbide Ball A Scale Load: 60kg Brale Equip B Scale Load: 100kg 1/16in. Diam Ball C Scale Load: 150kg Brale Equip D Scale Load: 100kg Brale Equip 15-N Scale Load: 15kg 30-N Scale Load: 30kg 45-N Scale Load: 45kg
410 388 388 388 71.4 - 41.8 56.8 81.4 61.1 45.3 - 195 410
400 379 379 379 70.8 - 40.8 56 81 60.2 44.1 55 190 400
390 369 369 369 70.3 - 39.8 55.2 80.3 59.3 42.9 - 185 390
380 360 360 360 69.8 -110 38.8 54.4 79.8 58.4 41.7 52 180 380
370 350 350 350 69.2 - 37.7 53.6 79.2 57.4 40.4 - 175 370
360 341 341 341 68.7 -109 36.6 52.8 78.6 56.4 39.1 50 170 360
350 331 331 331 68.1 - 35.5 51.9 78 55.4 37.8 - 166 350
340 322 322 322 67.6 -108 34.4 51.1 77.4 54.4 36.5 47 161 340
330 313 313 313 67 - 33.3 50.2 76.8 53.6 35.2 - 156 330
320 303 303 303 66.4 -107 32.2 49.4 76.2 52.3 33.9 45 151 320
310 294 294 294 65.8 - 31 48.4 75.6 51.3 32.5 - 146 310
300 284 284 284 65.2 -105.5 29.8 47.5 74.9 50.2 31.1 42 141 300
295 280 280 280 64.8 - 29.2 47.1 74.6 49.7 30.4 - 139 295
290 275 275 275 64.5 -104.5 28.5 46.5 74.2 49 29.5 41 136 290
285 270 270 270 64.2 - 27.8 46 73.8 48.4 28.7 - 134 285
280 265 265 265 63.8 -103.5 27.1 45.3 73.4 47.8 27.9 40 131 280
275 261 261 261 63.5 - 26.4 44.9 73 47.2 27.1 - 129 275
270 256 256 256 63.1 -102 25.4 44.3 72.6 46.4 26.2 38 126 270
265 252 252 252 62.7 - 24.8 43.7 72.1 45.7 25.2 - 124 265
260 247 247 247 62.4 -101 24 43.1 71.6 45 24.3 37 121 260
255 243 243 243 62 - 23.1 42.2 71.1 44.2 23.2 - 119 255
250 238 238 238 61.6 99.5 22.2 41.7 70.6 43.4 22.2 36 116 250
245 233 233 233 61.2 - 21.3 41.1 70.1 42.5 21.1 - 114 245
240 228 228 228 60.7 98.1 20.3 40.3 69.6 41.7 19.9 34 110 240
230 219 219 219 - 96.7 -18 - - - - 33 106 230
220 209 209 209 - 95 -15.7 - - - - 32 101 220
210 200 200 200 - 93.4 -13.4 - - - - 30 97 210
200 190 190 190 - 91.5 -11 - - - - 29 92 200
190 181 181 181 - 89.4 -8.5 - - - - 28 88 190
180 171 171 171 - 87.1 -6 - - - - 26 84 180
170 162 162 162 - 85 -3 - - - - 25 79 170
160 152 152 152 - 81.7 0 - - - - 24 75 160
150 143 143 143 - 78.7 - - - - - 22 71 150
140 133 133 133 - 75 - - - - - 21 66 140
130 124 124 124 - 71.2 - - - - - 20 62 130
120 114 114 114 - 66.7 - - - - - - 57 120
110 105 105 105 - 62.3 - - - - - - - 110
100 95 95 95 - 56.2 - - - - - - - 100
95 90 90 90 - 52 - - - - - - - 95
90 86 86 86 - 48 - - - - - - - 90
85 81 81 81 - 41 - - - - - - - 85