Leadking
Contributor
From a post over five years ago;
U.S.tensile strength for 3AA cylinders (105,000-125,000 psi) is not the same as European tensile strength (135,000-155,000 psi as required by EN 1964 part 1 and ISO 9809 part 1) and I have test data that shows Faber cylinders delivered to us show a tensile strength of 115,000-123,000 psi (as required by DOT)
The genius behind the design of Exempt tanks was John Dimik (spelling may not be correct) of the old Pressed Steel Tank. He used the same tooling with a new high strength steel that was developed. Everyone assumes because the sizes are the same, everything is the same, FALSE. Exempt cylinders are made from a completely different steel than 3AA cylinders. I will keep posting accurate, honest information each time I find these posts which I consider mis-leading at a minimum and dangerous at most.
U.S.tensile strength for 3AA cylinders (105,000-125,000 psi) is not the same as European tensile strength (135,000-155,000 psi as required by EN 1964 part 1 and ISO 9809 part 1) and I have test data that shows Faber cylinders delivered to us show a tensile strength of 115,000-123,000 psi (as required by DOT)
The genius behind the design of Exempt tanks was John Dimik (spelling may not be correct) of the old Pressed Steel Tank. He used the same tooling with a new high strength steel that was developed. Everyone assumes because the sizes are the same, everything is the same, FALSE. Exempt cylinders are made from a completely different steel than 3AA cylinders. I will keep posting accurate, honest information each time I find these posts which I consider mis-leading at a minimum and dangerous at most.
