The Steel Supply Company

Buyers Guide

Hardness Conversion Tables (Approximate)

 

Brinell Hardness Rockwell B Scale Rockwell C Scale Prox Tensile PSI
653 N/A 62 324,000
627 N/A 60 311,000
578 N/A 57 290,000
555 N/A 56 284,000
534 N/A 54 270,000
477 N/A 50 243,000
415 N/A 45 211,000
375 N/A 40 182,000
331 N/A 36 162,000
321 N/A 34 153,000
311 N/A 33 148,000
302 N/A 32 144,000
285 N/A 30 136,000
269 N/A 28 129,000
255 N/A 25 120,000
241 100 23 115,000
235 99 22 112,000
229 98 21 110,000
223 97 20 108,000
207 95 N/A 101,000
202 94 N/A 98,000
183 90 N/A 89,000
149 81 N/A 75,000

 

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