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Yep understood - so is that why 321 is typically offered in different decimal thicknesses to 316?

I've been doing some research on stainless gauges (archaic) recently to try to find what the actual standard nominal thickness is for each one, and which ones are commonly available from suppliers. It has been quite frustrating and a little surprising/enlightening. Below is what I've found -...

Thanks to all for your replies and discussion. I tend to agree with no length for standard solid rivets, but detailed call out for non-standard special hardware such as Cherries or Hi-loks. So, assuming the rivet length is not specified on the drawings and left up to the technician at time of...

We don't call-out rivet lengths on drawings. We specify the rivet type as far as possible and then put XX for the length e.g. MS20615-4MXX. The quantity in the BOM is "as required", and we stock a selection of lengths that are reordered at a minimum quantity reorder point. Rivet lay-out is...

Me again. Take take take. I need the temperature dependent values for Sm (now Sps I believe) from the ASME BPVC for Inconel 625 annealed sheet. It's not in the 1986 edition. I've been told that it does exist in the later versions, which I don't have. Typically, I believe temp dependent Sm...

Hello all, This question could sit in many a forum, so I'll put it here and see what happens. In the austenitic stainless steels section of MIL-HDBK-5, Table 2.7.1.0(b), reference to CRES 321 has been omitted in rev J (i.e. AR-MMPDS-01). It was originally included in H. There is no rev I. I...

I'm using it because that's all I have. Is IN625 in the latest version? Can you give me the allowable for combined Primary and Secondary stresses please? Or is it not a simple matter?

Hi, Please can anyone give me the 3Sm (now Sps I believe) allowable from the ASME BPVC for Inconel 625 annealed sheet? It's not in the 1986 edition. Is it even in the later editions? Thanks, JE.

ctmfab - I have similar FEA weld issues. I am working with ANSYS, and have included a batch file here of a typical case for those interested ANSYS users to run if they wish. Apologies then for the length of this thread, but they do say a picture speaks a thousand words... Fundamentally, it is...

James, I would certainly also be interested in seeing the more obscure references which you may have found. As Ed said, the goal is to try and confirm techniques for predicting fatigue in riveted structures. Do you have any experience with FE analysis and random vibration spectra? Maybe I...

Jetmaker - any references? (legally I'd be pushing it with ref: "jetmaker from eng-tips", although I've gotten away with a lot in my time ;-)). Thanks, JE

Ed, Thanks, for replying; this stuff must be fairly proprietary info as it seems to be a well guarded secret...aerospace companies must do it all the time. Being part of a small company means that we do not have the resources or funding to conduct significant suites of experimental testing on...

Hi, I'm currently using Ansys and attempting to predict the fatigue life of a sheet metal structure containing many rivets subjected to a random vibration spectrum. I am using 4 noded 3D elastic shell elements for the sheeting. My first issue is how to model the rivets? I have used coupled...

A conservative method of predicting the fatigue life of a riveted joint is to extract nodal forces from an elastic finite element model with the rivets represented as beams, calculate the maximum sheet bearing stress using the quotient of highest load and rivet bearing area on the thinnest...