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The initial velocities of the sample serials.
| Type | Sample serial | Material | Initial velocity | Velocity interval |
|---|---|---|---|---|
| I | 1–11 | 7050 aluminum alloy | 5–33 m/s | 3 m/s |
| II | 12–22 | 5-15PH stainless steel | 20–60 m/s | 4 m/s |
| III | 23–33 | Ti-6Al-4 V titanium alloy | 15–45 m/s | 3 m/s |
