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| Sample code | Ultimate stress (MPa) | Ultimate strain (%) | Toughness (MJ m−3) | Young's modulus (MPa) |
|---|---|---|---|---|
| CHPF-1 | 32.1 ± 0.5 | 72.2 ± 0.2 | 14.7 ± 0.3 | 95.2 ± 2.3 |
| CHPF-2 | 35.3 ± 1.2 | 55.2 ± 0.8 | 14.1 ± 0.5 | 436.2 ± 18.7 |
| CHPF-3 | 39.3 ± 0.5 | 41.9 ± 1.9 | 12.7 ± 0.8 | 758.8 ± 35.2 |
| CHPF-4 | 42.0 ± 0.6 | 37.0 ± 5.0 | 12.4 ± 0.6 | 1040.5 ± 42.8 |
| CHPF-5 | 35.7 ± 0.8 | 18.4 ± 7.6 | 5.7 ± 0.3 | 1107.3 ± 55.1 |
