Re-validation to use Suzuki Garphyttan raw material for part number L-08160-0681-00.

By facebooker_4066445690043857
  • Period: to

    ASW informed they will be permanently closing their manufacturing facility.

  • Suzuki Garphyttan returned to be the RM supplier for 681.

  • Suzuki Garphyttan internal validation of RM by ASM.

  • Luk Puebla requested first 30 pieces to be tested and revalidated.

    Because we haven’t supplied SG parts since 2015 we need to be revalidated.

  • Luk Puebla requested another 30 pieces to have a 2nd test.

  • Feedback was received from Luk from 1st 30 samples.

    Two failed springs were reported from the first 30 samples.

  • The 2 broken springs were sent to the ITC for failure analysis.

  • Reception of ITC failure analysis for the first 2 pieces.

    The microhardness results met the nitride hardness
    specification. Residual stress was measured via x-ray diffraction. The residual stress depth profile measured as expected. No
    manufacturing or material defects were observed.

  • Answer received from Luk about test results second 30 pieces.

    Three failed springs were reported from the second 30 pieces.

  • The 3 parts from the 2nd 30 samples that failed were sent to the ITC for failure analysis.

  • Reception of ITC failure analysis report for the second 3 pieces.

    Conclusion: The cause of each spring failure appeared to be high stress fatigue. A Nitride layer was present and
    met specified hardness and case depth requirements. No metallurgical or microstructural anomalies were visible
    on or around the multiple fracture surfaces examined.