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Certification of Aerospace Products to international quality Standards
Certification of Aerospace Products to international quality Standards
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EN3052-050
In QTR, heat treatment section: could you please replace “solution heat treat” by “precipitation heat treatment”?
Holding temperature is a bit below than those specified in related material standard, but it may be explained by the fact that wire has not been strain hardened. Anyway, tensile tests are compliant, so, it is just something to point out, as mentioned in this section by AHG.
EN3052-060
Same comments as EN3052-050 for heat treatment.
EN3052-080
Same comments as EN3052-050 and -060 for heat treatment.
Surface roughness on head bearing surface and shank: could you please confirm that max roughness measured is 0,05 µm ? (and not 0,5 µm?)
Many thanks.
Regards.
EN3052-050
In QTR, heat treatment section: could you please replace “solution heat treat” by “precipitation heat treatment”?
Done : see new QTR ind E
Holding temperature is a bit below than those specified in related material standard, but it may be explained by the fact that wire has not been strain hardened. Anyway, tensile tests are compliant, so, it is just something to point out, as mentioned in this section by AHG.
The specification is only a recommendation and not a requirement . The main characteristic (tensile , micrography) are Ok which validate the holding temperature
For your information the temperature used by AHG is compliant with AMS5853 for A286 stainless steel which is the US name for EZ6NCT25; an extract of the spec is given in “supplementary document”
EN3052-060
Same comments as EN3052-050 for heat treatment.
Done see new QTR ind E
EN3052-080
Same comments as EN3052-050 and -060 for heat treatment.
Done see new QTR ind E
Surface roughness on head bearing surface and shank: could you please confirm that max roughness measured is 0,05 µm ? (and not 0,5 µm?)
Done : value has been changed ( to max 0.4µ ) in new QTR ind E
Thank you again for these clarifications.
Approved on my side.
Best regards.