Skip to main content

Re: [MW:34528] Digest for materials-welding@googlegroups.com - 2 updates in 2 topics

Dear welding enthusiast,

 Sub; Procedure for repair of 17-4PH grade steel components

I Regret that i cannot suggest complete WPS for this job..but can 

advise on the right grade of consumable.

The suitable matching grade to weld 17-4PH is ER630 wire  and E630 electrode.

Regards

C C GIROTRA
WELDWELL SPECIALITY PVT LTD
MUMBAI-400074

on 

On Mon, Sep 4, 2023 at 10:22 AM <materials-welding@googlegroups.com> wrote:
Pravin Mohite <praveenss224@gmail.com>: Sep 03 05:58AM -0700

Hi Experts,
 
Need your advise on the interpretation of statement referred in *Cl -
10.2.12.2 (b) of API 5L 46th *edition for tensile retest of Gr. X65M SAWL
line pipe.
 
The statement of this clause which I am looking for your advise is - *'the
retest specimen should be taken from two different mother coils or plate,
as applicable' *
 
Below are the queries on this statement :
1. For the word *'should'* referred in this statement. Since as per API 5L
terms, 'should' refers to recommended practice & does not make it mandatory
to manufacturer to comply.
 
2. The term referred as *'mother Coils or plate'. *Since specification
doesn't referring the term as 'Mother Coils or *Mother* Plate' , I can
consider the other daughter plates from mother plates to take retest
samples.
 
My interpretation on the statement is -
*'It is not mandatory for the manufacturer to take the retest sample from
the two different mother plates. He can take retest samples from the other
daughter plates of same mother plates from which initial tensile test
specimen was taken '.*
 
Requesting experts to advise on the interpretation of above statement and
opinion about my interpretation.
 
With regards,
Pravin Mohite
+91 9664 232573
"Dương Vinh Quang" <duongvinhquanga13@gmail.com>: Sep 01 07:55PM -0700

Hi bro,
Please share me WPS relate you job because I have the problem same you!
Thank you!
my email: duongvinhquanga13@gmail.com
 
Vào lúc 17:02:09 UTC+7 ngày Thứ Năm, 1 tháng 3, 2018, Balasubramanian.N đã
viết:
 
You received this digest because you're subscribed to updates for this group. You can change your settings on the group membership page.
To unsubscribe from this group and stop receiving emails from it send an email to materials-welding+unsubscribe@googlegroups.com.

--
https://materials-welding.blogspot.com/
https://www.linkedin.com/groups/122787
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/CAMrhEo_g1QQdZx-pDZuZwo2CaVfx4hHFhjkO0WTxrfKybQ8FtA%40mail.gmail.com.

Comments

Popular posts from this blog

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...