Sustained-load cracking – how many aluminum cylinders have exhibited SLC?

Out of a total population of approximately 1,073,000 Luxfer scuba cylinders made of 6351 alloy, only 1.25% have exhibited SLC.
Out of Luxfer’s total 6.1-million population of 6351-alloy cylinders, the SLC rate is slightly less than 0.37%.
While we do not have complete statistics on cylinders manufactured by other companies, industry experts estimate that out of a worldwide population of more than 30 million 6351-alloy cylinders, far less than 1% have exhibited SLC.

Posted by Luxfer