On Feb 16, 2017, at 7:39 AM, 'AGUSTIN JIMENEZ' via Materials & Welding <materials-welding@googlegroups.com> wrote:HI. FOR THAT THICKNESS YOU NEED WIRE IQI NUMBER 4 IS THCK 0.063" SEE TABLE T-233.2WIRE IQI DESIGNATION, WIRE DIAMETER,AND WIRE IDENTITY IN ASME SECTION V ARTICLE 2, THE SPECIFICATION CLIENT IS MANDATORY.BEST REGARSAgustin Jimenéz+58 4167801321
De: Rajendra Jadhav <raj04aug@gmail.com>
Para: Materials & Welding <materials-welding@googlegroups.com>
Enviado: Jueves, 16 de febrero, 2017 7:44:37
Asunto: [MW:26085] Re: Regarding 2% sensitivity in radiography film.
Refer UW-51--
On Tuesday, January 10, 2017 at 11:43:00 AM UTC+5:30, Prasad Rode wrote:Dear sir,
I have 1" s.s. pipe having thkness of 4.1mm. We have used x ray quality with D4 size film. We have shown the client, required IQI as per sec V.
But client wants 2% sensitivity as per specification.
Sensitivity= min thk of visible wire/ thk of base metal*100
In our case, sensitivity= 0.20/4.1*100.
So, it will come as 4.84 % .
So, how we will get 2% sensitivity.
Regards
Prasad
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Hi, You are correct, Minimum refers to the one cycle for which this part will expose until final work shop PWHT. hence mill test certificate shall include this. Max. SPWHT, refers to additional cycles of heat treatment that are reserved for future repairs during equipment lifetime. Again, these simulated no. Of cycles shall be specified in MTC. The idea is we need to make sure that steel mechanical properties are not compromised upon exposure to multiple repairs (i e 4 cycles in your case). One could say, if steel is subjected to 4 cycles and is ok, then it should by defacto be good for one cycle, yet, this is wrong assumption cause mechanical problems and microstructure of materials varies accordingly based on no. Of cycles for which material will expose. This is apparent in alloy steel and especially for impact test values as an example. In your case, this forged CS with properties before PWHT can be understood to be " as forged" condition (i.e. Wit...
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