Skip to main content

[MW:13697] Re: Drop Weight Test.

The drop weight test (DWT) is a testing procedure where the behaviour
of material on brittle, extending crack is investigated.
During the test only test condition modified is temperature.
Now the term Nil ductility temperature (NDT) is that temperature where
a test piece break through while at 5K higher testing temperature, two
furhter test peices of the same material do not break any more is
called NDT.
The testing creteria is same as told by Mr. Gosawmi.

Regards
Sandeep

On Feb 14, 10:59 pm, "pgoswami" <pgosw...@quickclic.net> wrote:
> Hi Mohit,
>
> The purpose of drop weight test is to detect the Nil Ductility Temperature
> (NDT).The applicable standard is ASTM E-208. See the attached brief
> description for your information.Sec-III, NB2330 explains the basis for
> establishing the NDT.
>
> Hope this would clarify your query.
>
> Thanks.
>
> Pradip Goswami,P.Eng.IWE
>
> Welding & Metallurgical Specialist & Consultant
>
> Ontario, Canada.
>
> Email-pgosw...@sympatico.ca <blocked::mailto:Email-pgosw...@sympatico.ca> ,
>
> pgosw...@quickclic.net <blocked::mailto:pgosw...@quickclic.net>
>
>   _____
>
> From: Mohit Aggarwal [mailto:aggarwalmohi...@gmail.com]
> Sent: Tuesday, February 14, 2012 10:17 AM
> To: materials-welding
> Cc: christopher_rajku...@yahoo.com; george.dilin...@gr.bureauveritas.com;
> manojac...@gmail.com; welding_engr_r...@charter.net; AA karandish; Abuhanip
> bin Abdul; Ahmed Osman; akcme; Ali Asghari; Aly; AMIT PAHUJA; Amos Majola;
> Anil Hegde; antony jenis; Arun Jacob; Arunachalam A; Ary Agung Prasetyo;
> asad azmi; Brl Pp; Dindo; Dinesh Somwanshi; duc hoang; ENAYAT ZAREI; Endri
> Prasetyo; Fitria Rahman; fredric; Garry Mat Eng.; Himan Nikdin; james
> gerald; John Henning; jose; Kaja Mohideen; kannayeram gnanapandithan;
> Karthik; Kavin Murugam; ketan shah; khemici badri; lakshman kumar;
> Madhusudan Rout; mahesh sanghvi; Mahmoud; meemo prasad; Mehdi Emami; mpk
> mpk; MRG; Muhammed Ibrahim PK; muthu barathi; Nadgauda, Subhas; Nandesh
> Kumar; Narendra Gohil; Neilash Kumar; Nizam Mohamad; pgoswami; Pieper QSI;
> prabhakar...@gmail.com; prem nautiyal; R.Lenin; rajeev arora;
> rajkumarantoni; Ramchandra vichare; Ramin Kondori; ravi varman; S C Balawat;
> sanggyu LEE; santhosh kumar; SAQIB SHIRAZI; sevak hiren; Shadab Alam Ansari;
> shanmuga mari; snbagchi; Srinivas Engr; srinivasu; T. Mahendran; U
> WYNN-NAING; vaibhav Joshi; venkat ramana; Vijay Katkar; vinit.deshpande;
> Vino Varghese; Wu Hua; yogeshkumar Kumbhar; ZUL MAS
> Subject: Drop Weight Test.
>
> Respected Experts,
>
> As per client Requirement We will have to conduct Drop  Weight Test IN
> NPCIL.. What is Drop Weight Test and how we will determine Nil ductility
> transition temp..PLease reply
>
> Thanks & REgards
> MOhit Aggarwal.
>
>  ASTM E208 - 06.pdf
> 54KViewDownload

--
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.

Comments

Popular posts from this blog

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...

[MW:5202] RE: 5200] NDT after PWHT

------------------------------------- Interpretation:  I‑89‑14 Subject:         Section I (1986 Edition, 1987 Addenda), PW‑11,                  NDE Prior to PWHT Date Issued:     December 15, 1988 File:            BC88‑393   Question: Does PW‑11 require that NDE be performed on welds after they have been subjected to the postweld heat treatment required by PW‑39?   Reply: No, unless the conditions described in PW‑11.2.2 exist. ---------------------------------------------- Interpretation:  VIII-1-98-09 Subject:         Section VIII, Division 1 (1995 Edition, 1996 Addenda); NDE                 ...

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...