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Up Topic Welding Industry / ASME Codes / Coupon Definition
- - By Superflux (****) Date 06-26-2016 02:34
ASME Sec. IX, Article III, QW 302.2
Please define coupon for me.
Parent - - By Don56 (**) Date 06-27-2016 21:28
It is the two pieces of metal joined together by welding.  In QW-302.2 your weld length must be at least 6" that can be examined by the appropriate NDE.
Parent - - By Superflux (****) Date 06-28-2016 02:28
Thank you.
I wanted a confirmation on this as "someone" seems to think that coupon length is 2-3" pipe nipples with a butt weld in the middle...
Parent - - By pipewelder_1999 (****) Date 06-28-2016 02:36
So would 2 pcs of pipe 3" long not be suitable as a coupon? Please enlighten me as I see nothing wrong with dimension?

The dimensions for bend specimens are listed as 6" or as required.
Parent - - By Don56 (**) Date 06-28-2016 21:22
For WPQ you have to weld a weld at least 6" in length.  If qualification is by RT, the length of a pipe coupon is not important as long as the weld is 6" long.
Parent - - By pipewelder_1999 (****) Date 06-29-2016 12:13
May be wrong but I think the 6" length of weld is required for RT and bends. But for Rt you are right, OAL length doesn't matter for RT.
Parent - By Superflux (****) Date 06-29-2016 13:41 Edited 06-29-2016 13:48
Thanks all of you for the confirmation.
Hey I just work here and am a "good soldier" who follows orders from the commanding officer.
Parent - - By pipewelder_1999 (****) Date 06-28-2016 01:11 Edited 06-28-2016 09:51
a weld or braze assembly for procedure or performance qualification testing. The coupon may be any product from plate, pipe, tube, etc., and may be a fillet weld, overlay, deposited weld metal, etc.

EDIT: From ASME Sec IX Definitions
Parent - - By 803056 (*****) Date 06-28-2016 02:49
I get so confused at times. I thought we were discussing the things my wife cuts from the Sunday newspaper to get a quarter off of an item she would never otherwise purchase.

Parent - By pipewelder_1999 (****) Date 06-28-2016 09:55
It happens to all of us :)

Have a good day Al.

Parent - - By Superflux (****) Date 06-29-2016 13:52
C'mon Al,
You secretly want a 25ยข off deal on a can of Spaghetti-os. Dontcha?
Parent - By CWI555 (*****) Date 07-01-2016 15:54
Or 50 cents off that box of fruit loops.
Parent - - By welderbrent (*****) Date 06-28-2016 23:09
The annual interest rate paid on a bond, expressed as a percentage of the face value. It is also referred to as the "coupon rate," 

But I don't know what my investments have to do with your welding code  :confused:
Parent - By Don56 (**) Date 07-01-2016 21:19
Bond, wasn't he a secret agent?
Happy Fourth of July Y'all!
Up Topic Welding Industry / ASME Codes / Coupon Definition

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