Skip to main content

Re: [MW:35373] Pipe 304L(P8) – Pipe 304L(P8)

By Materials & Welding
ER308H filler wire does have a higher risk of intergranular corrosion compared to ER 308L due to its
higher Carbon content which leads to Carbide precipitation at the grain boundaries during welding. 
Hence it is not advisable to use ER308H filler wire in any case.

ER 308H  is suited for high temp. applications like power generation and where intergranular corrosion 
is less critical and where strength is critical.
C Sridhar.
---------------------------------------------------------------------------------------------------------------------------

On Wed, 25 Dec 2024 at 13:01, Vinay <vinay.thattey@gmail.com> wrote:
Yes . E/ER 308L is having beter corrosion resistance  but strength reduces marginally. You can also try E/ER 308LM

On Mon, 18 Nov 2024 at 17:39, Marco Nunes <marcovsky82@gmail.com> wrote:
Can  anyone provide some assistance in the issue identified below:


The details are as follows:

 
Details

Parent material Pipe 304L(P8) – Pipe 304L(P8)
Inservice temperature range – 35-85 °C
Operating Pressure – 0.4 -0.5 MPaG
Process Type – Process Condensate.
Carbonic acid – there may be the presence of carbonic acid as indicated by CGCL.
 

Approved Process

WPS# P8-P8 AR - Filler material ER308L- F6 filler metal
 

Quality Issue

ER308H rods were used instead of ER308L on two locations of the 304L piping.
 

Technical Advice Request

The client indicated that the use of the ER308H Filler Wire instead of the ER308L has a higher risk of intergranular corrosion and corrosion related issues.  
 

Please advise on the short term or long-term quality effects on the integrity of the welded joints where the ER308H filler wire were utilized.

 

Thanking you in advance.

Mark Nunes

--
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 visit https://groups.google.com/d/msgid/materials-welding/CAHXTn13_GqEVg7xyKfzH26pgfOGr8us4_2HTsfih1tPZn-vFwQ%40mail.gmail.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 visit https://groups.google.com/d/msgid/materials-welding/CA%2BQ29Oh5yaenUFNs4TGO8OCh7ix39xJHMJwiSzAbuNRQpmbAsg%40mail.gmail.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 visit https://groups.google.com/d/msgid/materials-welding/CAHo%3DYig9W6%2BTgSprGPNuUATfD8NNPDNZ2dL29NK7b-mxAb3YUA%40mail.gmail.com.

Comments

Post a Comment

Popular posts from this blog

Materails FAQs

By Materials & Welding
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...
21 comments
Read more

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

By Materials & Welding
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...
Post a Comment
Read more

Re: [MW:10788] ON PLOT PIPING & OFF PLOT PIPING

By Materials & Welding
Piping systems involved for the flow lines and gathering lines from the well head isolation valve to the production facility or processing plant isolation valve are determined as OFF PLOT. ON PLOT defines piping system in the processing plant and production platform. ANSI/ASME B31.4 applies for off plot piping system. B31.4 allows the use of either API 1104 or ASME section IX (as appropriate). However, occasionally, a very small system such as piping within 500 feet of a processing plant (some client also said 400 feet) may be declared B31.3 rather than B31.4. When B31.3 is invoked, only ASME Section IX is used. before you decide which code to use for welding procedure and/or welder qualification for pipe welding, you have to know the design and construction code applicable to the system. Please read far enough into scope and diagram illustrating the application of either B31.3 and B31.4 hope this helps rgds 2011/4/21 pradip kumar sil < pradipsil@gmail.com > Dear all, ...
Post a Comment
Read more