pablowdude83
Mechanical
- Jul 1, 2010
- 1
Hi,
I'm new to the forum so I apologize if I break any rules. I am currently operating an 18" diameter metal diaphragm shock tube with 3003-H14 sheet (.016" & .025" thickness). Historically we have ordered this material from McMaster Carr and despite the lack of material test reports, we've obtained fairly consistent rupture performance (+/- 10% burst pressure). Recently, we've received several rolls of material that rupture at 50% of our historical burst pressure average. Does someone know the yield and ultimate strength tolerance of 3003-H14 sheet? Does sheet metal this thin have additional properties that could cause such a large variation?
I'm now sourcing .025" thick material with test sheets from a different supplier, but the burst pressure is just on par with the historical average we obtained using .016" material (despite the fact that we anticipated a roughly 1.5X difference). I'd really appreciate any insight from a materials guy on this.
Thanks,
Paul
I'm new to the forum so I apologize if I break any rules. I am currently operating an 18" diameter metal diaphragm shock tube with 3003-H14 sheet (.016" & .025" thickness). Historically we have ordered this material from McMaster Carr and despite the lack of material test reports, we've obtained fairly consistent rupture performance (+/- 10% burst pressure). Recently, we've received several rolls of material that rupture at 50% of our historical burst pressure average. Does someone know the yield and ultimate strength tolerance of 3003-H14 sheet? Does sheet metal this thin have additional properties that could cause such a large variation?
I'm now sourcing .025" thick material with test sheets from a different supplier, but the burst pressure is just on par with the historical average we obtained using .016" material (despite the fact that we anticipated a roughly 1.5X difference). I'd really appreciate any insight from a materials guy on this.
Thanks,
Paul
