BS ISO 7257:2016 - Aircraft. Hydraulic tubing joints and fittings. Rotary flexure test

BS ISO 7257:2016

Aircraft. Hydraulic tubing joints and fittings. Rotary flexure test

Status : Current   Published : June 2016



This International Standard specifies a flexure test procedure to determine and classify the fatigue strengths of reconnectable or permanent hydraulic tube joints.

The procedure is intended for conducting flexure tests of fittings and joints with high-strength hydraulic tubes of various alloys such as corrosion resistant steel, Nimonic™ 1), titanium and aluminium alloy hydraulic tube for use on commercial and military aircraft.

A mean stress is applied by holding system pressure in the specimens and then flexing in a rotary bending test machine.

Standard NumberBS ISO 7257:2016
TitleAircraft. Hydraulic tubing joints and fittings. Rotary flexure test
Publication Date30 June 2016
Normative References(Required to achieve compliance to this standard)No other standards are normatively referenced
Informative References(Provided for Information)ISO 2964, ISO 8575
ReplacesBS M 55:1984, ISO 7257:1983
International RelationshipsISO 7257:2016
Draft Superseded By14/30264731 DC
DescriptorsAircraft, Air transport engineering, Rotary-wing aircraft, Vehicles, Hydraulic equipment, Hydraulic tests, Pipe couplings, Pipe fittings, Mechanical testing, Bend testing
Title in FrenchAéronautique. Joints et raccords pour tubes hydrauliques. Essai de flexion rotative
ISBN978 0 580 79216 8
File Size1.96 MB

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