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Certification of Aerospace Products to international quality Standards
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QTR, clause 5.4.4
Max locking torque and min breakaway torque requirement values are reversed.
QTR, clauses 5.4.1.1 and 5.4.1.2:
Bolts used for performing tensile tests are made of steel, heat treated to UTS 1800 MPa.
Is it minimum UTS?
Companion bolts with 1800 MPa minimum UTS shall break at 55,7 kN minimum (by using ISO9154 formulae).
Many thanks and have a good day.
Regards,
Julien
Thanks for your comments.
QTR, clause 5.4.4 –> typo error. QTR reviewed
QTR clauses 5.4.1.1 and 5.4.1.2 –> test bolts are 1550 – 1800 Mpa Streght class. QTR reviewed.
Best Regards
Piero
Hello Piero,
Thank you for replying.
It is good for me now.
Qualification approved.
Bet regards,
Julien