Microstructure
| SUBJECT | CONTROL | HTL15174 | |
| 100X | |
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| 400X | |
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| 1000X | |
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Microhardness
(Length of indentation from 100 gram load)
| Subject | Control | HTL15174 |
| 246 | 229 | 272 |
| 237 | 229 | 270 |
| 226 | 226 | 274 |
| 237 | 231 | |
| 212 | 219 | |
| 236 | 230 | |
| 243 | 204 | |
| AVE = 234 | AVE = 224 | AVE =272 |
Hardness Profiles
| SUBJECT | HTL15174 | STOCK |
 |
 |
58/60 RB |
Thermal Exposure Tests
Hardness of 6061 T6 1/2 inch round bar exposed to the following conditions
| T6 | T6+450F 10 min | T6+650F 10 min | T6+850F 10 min | |
| Rockwell B | 46/47/47* | 46/45/47 | 30/33/28 | 15/15/16 |
*3 hardness tests taken on each sample
Scanning Electron Micrographs of Fracture
| SUBJECT | HTL15174 | |
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OF INTEREST
| HTL15174 |
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