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WebCLASSIFICAÇÃO DE SOLOS: Sugestão do Highway Research Board-HRB adotada pela AASHTO Solos Siltosos Solos argilosos Excelente a bom Fraco a pobre Classificação … Webhrb 1/16" 100 hrc 120° 150 hrd 120° 100 hrf 1/16" 60 hr15n 120° 15 hr30n 120° 30 hr45n 120° 45 hr15t 1/16" 15 hr30t 1/16" 30 hr45t 1/16" 45 hsc n/mm2 300 80 76.0 253 310 85 80.7 … the united states is a typical country
Hardness Conversion Table, ASTM E140, DIN 50150
WebBrinell (HB) Rockwell C (HRC) Vickers (HV) Rockwell B (HRB) 50 513 450 48 481 425 46 452 403 44 427 382 42 404 363 40 382 346 38 362 329 36 344 313 34 326 298 32 309 275 28.5 285 258 25.5 266 241 22.5 248 100 228 20 234 98 215 220 96 204 209 94 194 198 92 184 188 90 176 179 88 168 171 86 161 164 84 155 157 82 ... Webindenters; however, all of the ball scale Rockwell hardness tests (HRB, HR30T, etc.) and most of the Brinell hardness tests preformed to develop these tables used hardened … http://pmt.usp.br/pmt3402/material/E140.13879.pdf the united states is a very large country