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#1
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Edge distances in steel
Folks -
How many diameters of edge distance do you need in steel? I know it's 1.5 in aluminum. thanks Ed |
#2
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There is no definite rule (as is also the case for alumnium). It depends on
the stress levels in the part. In general MIL-HDBK-5 provides data for e/D = 1.5 and 2.0. Unfortunately the copy I have handy right now (which is Rev F) does not have any data for e/D = 1.5 for 4130N. However the data for other steels indicates that you could have a 20%+ reduction in strength when using e/D = 1.5 cf e/D = 2.0. I would use 2.0 unless you know what the stresses, can source some allowables for e/D = 1.5 and have run the numbers to show that you have adequate margins. "Ed Wischmeyer" wrote in message news:2004082215291516807%edwisch@alummitedu... Folks - How many diameters of edge distance do you need in steel? I know it's 1.5 in aluminum. thanks Ed |
#3
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ok I'll bite. What's an "edge distance"?
Bill |
#4
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The distance of a fastener hole from the edge of a sheet of materials.
Edge distance is measured via and e/D ratio (minimum is typically 1.5 - 2.0) e = distance from centre of hole to sheet edge. D = diameter of fastener. "Bill Chernoff" wrote in message news:aPKWc.197841$M95.174071@pd7tw1no... ok I'll bite. What's an "edge distance"? Bill |
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