[MW:3086] RE: 3083] Re: Regarding the NDT to be carried out for 60 mm thick austenitic stainless steel plates

Dear friends ,

As per my suggestion, you better to select Co.60 only because the Ir -192 source is can do max .50 mm is sufficient but the code says can do upto 69mm .practically you can select the source Co -60 and you can save time as well as will achieve the sensitivity ,what the code and spec. recommended.

R.Ramu

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Shashank Vagal
Sent: Sunday, August 30, 2009 1:21 PM
To: materials-welding@googlegroups.com
Subject: [MW:3083] Re: Regarding the NDT to be carried out for 60 mm thick austenitic stainless steel plates

Nilesh,
Why would you do these things?
1. No co60 for 69 mm SS?
2. High Strength and Low Strength Ir 192 are same in their pen power.
3. UT of 60 mm SS - well, can you please pass me the proc? I am curious. Twin crystal for what reasons?
Shashank Vagal

--- On Sun, 30/8/09, SENTHILKUMAR SWAMINATHAN <skumarswami@yahoo.co.in> wrote:

From: SENTHILKUMAR SWAMINATHAN <skumarswami@yahoo.co.in>
Subject: [MW:3082] Re: Regarding the NDT to be carried out for 60 mm thick austenitic stainless steel plates
To: materials-welding@googlegroups.com
Date: Sunday, 30 August, 2009, 2:44 PM

High Curie or Low Curie only helps in time factor. But Ir 192 Penetration is same from Low and High. If am wrong correct me.

S.Senthilkumar

--- On Sun, 30/8/09, Yadav Shiva <luvshiv2002@gmail.com> wrote:

From: Yadav Shiva <luvshiv2002@gmail.com>
Subject: [MW:3080] Re: Regarding the NDT to be carried out for 60 mm thick austenitic stainless steel plates
To: materials-welding@googlegroups.com
Date: Sunday, 30 August, 2009, 2:38 PM

hi,

you can go for high strength - 192, but dont go for cobalt 60 since we use for thickness ranging more than 100 to & 150 mm above.

On Sun, Aug 30, 2009 at 11:48 AM, Nilesh Pathare <patharenil@gmail.com> wrote:

Hi,
If your specification permits for RT or UT you can carry out any of these test for 60 mm Thick S.S.
For RT you may need cobalt 60 or High strength iridium 192.
For Ultrasonic Testing you shall use the RTD Twin crystal longitudinal wave Angle probes.

Regards,
Nilesh Pathare.

On Sun, Aug 30, 2009 at 10:35 AM, Stephen <stephenipr@gmail.com> wrote:

I wanted to know which NDT to be carried out for 60 mm thick
austenitic stainless steel plates welded using TIG welding

--
Best Regards,

Nilesh Pathare

start: 2008-06-21 end: 0000-00-00

Looking for local information? Find it on Yahoo! Local

See the Web's breaking stories, chosen by people like you. Check out Yahoo! Buzz

--~--~---------~--~----~------------~-------~--~----~
To post to this group, send email to materials-welding@googlegroups.com
To unsubscribe from this group, send email to materials-welding-unsubscribe@googlegroups.com
For more options, visit this group's bolg at http://materials-welding.blogspot.com/
The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
-~----------~----~----~----~------~----~------~--~---

Re: [MW:34105] SA266 GR4N 4 Cycle SPWHT

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...

Materails FAQs

Q: What are equivalents for standard Q 235 B (and Q 235 A) for U-channels? (asked by: boris.vielhaber@vait.com) A: DIN Nr. = 2393 T.2, 2394 T.2, EN 10025 W. Nr. DIN 17007 = 1.0038 Design DIN 17006 = RSt 37-2, S235JRG2 (Fe 360 B) Q: What is St DIN 2391 BK material? (asked by: dmcandrews@automaticstamp.com) A: Precision steel tubes, cold-finished/hard. Q: What is C.D.W. Boiler Tube? (asked by: montydude123@yahoo.com) A: Cold Drawn Welded Boiler Tube. Q: WHAT IS W.Nr. 1.4301? PLS TELL US IN EASY LANGUAGUE (asked...

Heat tint (temper) colours on stainless steel surfaces heated in air // Heat tint

Introduction The colour formed when stainless steel is heated, either in a furnace application or in the heat affected zone of welds, is dependent on several factors that are related to the oxidation resistance of the steel. The heat tint or temper colour formed is caused by the progressive thickening of the surface oxide layer and so, as temperature is increased, the colours change. Oxidation resistance of stainless steels However, there are several factors that affect the degree of colour change and so there is no a single table of colour and temperature that represents all cases. The colours formed can only be used as an indication of the temperature to which the steel has been heated. Factors affecting the heat tint colours formed Steel composition The chromium content is the most important single factor affecting oxidation resistance. The higher the chromium, the more heat resistant the steel and so the development of the heat tint colou...

Materials & Welding

Search This Blog