| Type | In718-produced by EIGA | |||||
chemical composition wt.% | Ni | O | Cr | Fe | Mo | Al |
| 52.0 | ≤0.02 | 18.5 | Bal. | 3.0 | 0.5 | |
| Ti | C | Si | Mn | P | S | |
| 0.9 | ≤0.08 | ≤0.35 | ≤0.35 | ≤0.015 | ≤0.015 | |
| B | Co | Cu | ||||
| ≤0.006 | ≤1.0 | ≤0.3 | ||||
physical properties | size distribution μm | hall flow s/50g | apparent density g/cm3 | oxygen content ppm | nitrogen content ppm | sphericity % |
| 15-53 | ≤15 | ≥4.3 | ≤150 | ≤100 | ≥90 | |
mechanical properties (after heat treatment) | test temperature | tensile strength MPa | yield strength MPa | elongation % | ||
normal | 1320-1380 | 1070-1140 | ≥26 | |||
| 650℃ | 1060-1110 | 920-980 | ≥18 | |||
| 800℃ | ＞720 | ＞640 | ≥8 | |||
| 900℃ | 300-302 | 284-293 | ≥18 | |||
| 1000℃ | 121-141 | 101-120 | ≥45 | |||
high temperature endurance performance | ||||||
test temperature | test stress MPa | duration h | elongation % | |||
| 650℃ | 690 | ≥40 | ≥6 | |||
| SEM |  | |||||
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