ASME Section IX WPS Thickness Range
ASME Section IX WPS Thickness Range
(OP)
I'm confused by the ASME IX, 403.2, "the max thickness qualified is the thickness of the coupon", and 403.6, "the minimum base metal is T/2 when T<1/4".. Compare that to the table 451.2, where a coupon over 3/8 is qualified for thickness range from 3/16 - 2T.
I want to develop a WPS that ranges from 1/8 - 2". I'm thinking of using a coupon <1/4, and a 1" coupon. Does that cover my range? Am I missing a coupon between 1/2" and 1" for that range thickness? Or, if we qualify the min and max does that cover us?
I want to develop a WPS that ranges from 1/8 - 2". I'm thinking of using a coupon <1/4, and a 1" coupon. Does that cover my range? Am I missing a coupon between 1/2" and 1" for that range thickness? Or, if we qualify the min and max does that cover us?





RE: ASME Section IX WPS Thickness Range
If no impact qualification is required, what you propose will work for the BM thickness range.
QW-451.1
1/16" to 3/8" coupon thickness (T) qualifies for 1/16" to 2T
1" coupon thickness (T) qualified from 3/16" to 2T
so you have overlap
RE: ASME Section IX WPS Thickness Range
Where does it specify that 403.6 is relative to impact testing? I'm sure it's right there, I just can't see it.
I do require impact testing. Is section 403 related to impact testing? Because I have impact testing, does the combination of 403.2, and 403.6 mean I have gaps?
Thanks again for your help- I was up past midnight reading the code last night trying to find something that clears this up for me.
RE: ASME Section IX WPS Thickness Range
RE: ASME Section IX WPS Thickness Range
Thank you for your help.