BS ISO 19631:2015 pdf free

BS ISO 19631:2015 pdf free.Aerospace series一Tube fittings for fluid systems, 5 080 psi (35 000 kPa)一Qualification specification
Test assemblies shall consist of the parts specified in 3.5.1. Tests shall be conducted in accordance with Table 11 and with ISO 10583 for each size and material for which qualification is required.
Fittings claiming conformity with this specification shall be considered qualified if they are manufactured to the same dimensions, using the same materials and processes as products that have successfully met the requirements and have passed the tests in this specification.
When testing in accordance with ISO 10583:1993, 5.1, the test assembly shall withstand the proof pressure specified in Table 3 without leakage, evidence of permanent deformation, or other malfunction that might affect the ability to disconnect or connect the joint in the normal manner (to the interface point by hand and then using the specified range of torque values).Specimens to be proof tested are given in Table 11.
When tested in accordance with ISO 10583:1993, 5.2, assemblies shall pass the gaseous pressure test to the DOP specified in Table 3 without leakage or other failure.Specimens to be gaseous pressure tested are given in Table 11.
When tested as follows, the test assemblies shall be pressurized to the burst pressure specified in Table 3 and held at that pressure for 3 min after stabilization of the pressure. The pressure shall then be increased at a rate of 137 894 kPa/min±34 474 kPa/min (20 000 psi/min±5000 psi/ min) until failure occurs. No burst, slippage, leakage, or other failure shall occur at a pressure below 4×DOP.
Seven specimens shall be tested to failure with the following distribution:
一Two non aged specimens shall be tested at +94℃ (+201 °F).
一Two aged specimens after salt spray as per 3.5.11 at +94℃(+201 °F).
一Three specimens from hydraulic impulse resistant (3.5.3) at room temperature.
Specimens to be ultimate pressure tested are given in Table 11.Eight specimens with straight unions shall be tested. Two specimens shall withstand 107 flexure cycles with a bending stress level defined in Table 5. The other specimens shall be used to produce a S-N curve as described in ISO 7257. BS ISO 19631 pdf free download.