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How is spring force decay rate tested?

Zhejiang Ningdeli Spring Co., Ltd. NDL 2025/08/06

Testing Standards:

  • ISO 21669 Cyclic Testing (≥500,000 cycles)

  • Dynamic Load Simulation (e.g., MTS Hydraulic Test Systems)

Acceptance Thresholds:

  • Industrial Grade: Decay ≤15%

  • Aerospace Grade: Decay ≤5% (per NASA-STD-6012)

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