Page 112 - HOLE MAKING CATALOG p383-544

MATERIALS AND GRADES MATERIAL GROUPS USER GUIDE
Hardness Conversion Table
Brinell Hardness (HB) N/mm2 Kpsi
200
300 80 560
400
500 80 560
600
700 100 700

100 700

120 840

120 840

140 980

140 980

160 1120

160 1120

180 1260

180 1260

200 1400

200 1400

220 1540

220 1540

240 1680

240 1680

260 1820

260 1820

280 1960

280 1960

300 2100

300 2100

320 2240

320 2240

10 20 30 40 50 60 70 Tensile Strength

Rockwell “C” Hardness (HRC)

494 ISCAR