ISO 15330:1999 PDF

Scope: This International Standard specifies a preloading test which is able to detect the occurence of hydrogen embrittlement of fasteners at room temperature. This test is applicable to — metric bolts, screws and studs; — thread rolling screws; — self-tapping screws; — self-drilling screws; — nuts; — washers which are made of steel and are under tensile stress. The test shall be carried out within a temperature range of 10 ℃ to 35 ℃. The test is suitable only for in-process control and may be carried out after any step of the manufacturing process. It is not intended as an acceptance test. It is capable of assessing differences or changes in processing conditions or techniques and to determine the effectiveness of the various processing steps including pre- and post-coating treatments (baking) to reduce the mobile hydrogen in the fasteners. This test does not relieve the manufacturer or processor from the responsibility of imposing and monitoring suitable process control. NOTE The chance of detecting hydrogen embrittlement decreases significantly if the test is started more than 24 h after the last step of manufacturing process. Therefore, in normal cases this test is not suitable for acceptance testing. Special attention shall be given to the reference test in clause 7.3.

ISO 15330:1999 Referenced Document

ISO 10666:1999 Drilling screws with tapping screw thread - Mechanical and functional properties
ISO 2702:1992 Heat-treated steel tapping screws; mechanical properties
ISO 273:1979 Fasteners; Clearance holes for bolts and screws
ISO 7085:1999 Mechanical and performance requirements of case hardened and tempered metric thread rolling screws

1999 ISO 15330:1999 Fasteners - Preloading test for the detection of hydrogen embrittlement - Parallel bearing surface method