<p>This International Standard specifies a method of determining, on a statistical basis, the probability of the existence</p>
<p>of hydrogen embrittlement or degradation in:</p>
<p>a) a batch of barrel electroplated, autocatalytic plated, phosphated or chemically processed threaded articles;</p>
<p>b) a batch of rack plated threaded articles or rods.</p>
<p>This International Standard is applicable to threaded articles and rod made from steel with an actual tensile</p>
<p>strength W 1 000 MPa (corresponding hardness values: 300 HV, 303 HB or 31 HRC) or to surface-hardened</p>
<p>threaded articles or rods. It is not applicable to fasteners.</p>
<p>The test method is carried out after hydrogen embrittlement relief heat treatment and may also be used for</p>
<p>assessing differences in processing solutions, conditions and techniques.</p>
<p>The test method has two main functions: a) when used with a statistical sampling plan it can be used for lot</p>
<p>acceptance or rejection; b) it can be used as a control test to determine the effectiveness of the various processing</p>
<p>steps including pre- and post-baking treatments to reduce the mobile hydrogen in the articles or rod.</p>
<p>Although the test method is capable of indicating those articles that are embrittled to the extent defined in clause 2,</p>
<p>it does not guarantee complete freedom from embrittlement.</p>
<p>This International Standard does not relieve the plater, processor or manufacturer from imposing and monitoring</p>
<p>suitable process control.</p>
<p>NOTE 1 The use of inhibitors in acid pickling baths does not necessarily guarantee avoidance of hydrogen embrittlement.</p>
<p>NOTE 2 Annex A provides guidance on sources of introduction of hydrogen into threaded articles.</p>
Registration number (WIID)
18671
Scope
<p>This International Standard specifies a method of determining, on a statistical basis, the probability of the existence</p>
<p>of hydrogen embrittlement or degradation in:</p>
<p>a) a batch of barrel electroplated, autocatalytic plated, phosphated or chemically processed threaded articles;</p>
<p>b) a batch of rack plated threaded articles or rods.</p>
<p>This International Standard is applicable to threaded articles and rod made from steel with an actual tensile</p>
<p>strength W 1 000 MPa (corresponding hardness values: 300 HV, 303 HB or 31 HRC) or to surface-hardened</p>
<p>threaded articles or rods. It is not applicable to fasteners.</p>
<p>The test method is carried out after hydrogen embrittlement relief heat treatment and may also be used for</p>
<p>assessing differences in processing solutions, conditions and techniques.</p>
<p>The test method has two main functions: a) when used with a statistical sampling plan it can be used for lot</p>
<p>acceptance or rejection; b) it can be used as a control test to determine the effectiveness of the various processing</p>
<p>steps including pre- and post-baking treatments to reduce the mobile hydrogen in the articles or rod.</p>
<p>Although the test method is capable of indicating those articles that are embrittled to the extent defined in clause 2,</p>
<p>it does not guarantee complete freedom from embrittlement.</p>
<p>This International Standard does not relieve the plater, processor or manufacturer from imposing and monitoring</p>
<p>suitable process control.</p>
<p>NOTE 1 The use of inhibitors in acid pickling baths does not necessarily guarantee avoidance of hydrogen embrittlement.</p>
<p>NOTE 2 Annex A provides guidance on sources of introduction of hydrogen into threaded articles.</p>
