Epoxy FR4/FR5 A & B-basis allowables

[laremise]

All,

I am looking for A & B-basis allowables for structural applications for Epoxy FR4 and FR5.

Does anybody have any guidance/reference/extracts ?

Thx.

 

[der8110]

MIL-HDBK-17 is your best bet.

There was also an effort several years back, part of the AGATE program, to publish allowables for the common resin/matrix systems. These were considered "FAA Approved," if that applies to your program.

Sometimes the suppliers will do the allowables program, and will let you have access unless it is proprietary (and that is the usual case). Can't blame a design approval holder for wanting to retain the value of their investment.

 

[SWComposites]

Who is the vendor for FR4/FR5? What fiber and type (tape/fabric) are you using?