Air tightness: 80 ± 2 × 4H to 20 ± 2 ℃ × 2H → -40 ± 2 × 4H to 20 ± 2 ℃ × 2h, after 2cycles, measurement of mechanical properties, the rate of change of F1 should be less than 8%.
Durability: 4~6 /min 25000 cycles, each cycle 2500, measurement of mechanical properties, the rate of change of F1 should be less than 8%.
Corrosion resistance: the minimum compression state, neutral salt spray test of 48h,gas spring coating shall be in accordance with B 5.2 as specified in GB6461, the coating should accord with the regulations in GB1740 level.
Tensile strength: tensile strength of gas spring should accord with the regulations in table, after the test of each connector should not break or fall off phenomenon,mechanical properties should also be consistent with the force displacement curve.
| Tensile member section size，mm | Pull，N |
| φ5 | 2000 |
| φ6 | 3000 |
| φ8 | 4500 |
| φ10 | 6000 |
| φ12 | 10000 |
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Post time: May-09-2017