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Re: [MW:14152] regarding- thickness range for LTCS piping material for WPS

By Materials & Welding
hello darshan
its Ajay here
 
your thickness limit will be 7.11 to 14.22
this is as per ASME sec IX......bcouse for LTCS u have to do the impact test............in dis case ur limit will me in lower side is 7.11 but limited to 2T in higher side........
jus go thorugh ASME sec IX chapter 4 clause no QW-403.6

QW-403.6

The minimum base metal thickness qualified

is the thickness of the test coupon

T or 5⁄8 in. (16 mm),

whichever is less. However, where

T is less than 1⁄4 in.

(6 mm), the minimum thickness qualified is

1⁄2T. This variable

does not apply when a WPS is qualified with a PWHT

above the upper transformation temperature or when an

austenitic or P-No. 10H material is solution annealed after

welding.



On Thu, Apr 19, 2012 at 11:12 AM, Darshan Maheshwari <darshan.maheshwari@yahoo.com> wrote:
Can any body suggest what thickness range is applied for qualifying a WPS (for thickness 7.11mm) for LTCS piping material. Please provide reference also.
 
Regards,

Darshan Maheshwari.

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