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ASME 8 Bolting

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welding1

Mechanical
Joined
Dec 2, 2000
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122
Location
GB
If I use an A320 B8 bolt in an ASME 8 vessel the max temperature it can see is only 100F, If I use an A193 B8 bolt it can see 1500F. Why is this as both bolts are basically 304 stainless steel, with identical UNS number and mechanical properties?
 
It's a matter of reference specifications: A320 is for low temperature service, A193 for high temperature service.
I agree that the two are quite similar, especially for austenitic steels, but the fabricator has to choose one and to fulfil it.

prex
motori@xcalcsREMOVE.com
Online tools for structural design
 
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