[ Duplex Bar ]
[ Duplex Bar ]
Diameter [ mm ]
Position Rolling Forging
Average value ( J ) |
Single minimum value ( J ) |
Average value ( J ) |
Single minimum value ( J ) |
Ø140
Ø160
Ø180
L |
276 |
213 |
208 |
162 |
T |
153 |
131 |
119 |
95 |
L |
297 |
237 |
199 |
164 |
T |
143 |
107 |
109 |
87 |
L |
308 |
263 |
137 |
127 |
T |
160 |
142 |
96 |
83 |
Table 4 . Comparison of rolled and forged bar material in Charpy V-notch Impact Toughness
Production route
Rolling
Forging
Figure 3 . Hardness vs . distance from the external surface . Left column = rolled bar , right column = forged bar .
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