Welding Chrome-molley valves to 304 SS Pipe

[drocknden]

I'm looking for some guidlines to help me select filler metals for welding dissimilar metals. Specifically SA-182 F22 (P-5A) to SA-312 TP 304 Seamless Pipe (P-8). I would like the resource so I have a way to look this up in the future and would welcome any input on my delima at hand. Thanks!!

 

[stanweld]

The general weld filler metal guidelines are provided below but may require alternate selection based on corrosive environment.

Use ER/E309 for welds not requiring PWHT or operating below 500 F to 600 F.

When PWHT is required or the operating temp is greater than 500 F to 600 F, use a nickel base alloy filler metal; eg., ENiCrFe-3 or ERNiCr-3 or similar.

 

[strider6]

drocknden,

Look at these publications, i think it's something that can help u.

http://www.ssina.com/publications/welding.html

http://www.euro-inox.org/pdf/map/BrochureWeldability_EN.pdf

regards

Strider

http://www.corrosionist.com

 

[SJones]

http://www.nickelinstitute.org/inde...oc_id/3286/search_keyword/14018/method/2.html

Steve Jones
Materials & Corrosion Engineer

http://www.pdo.co.om/pdo/

 

[0707]

Stanweld has given the right answer. If your service permits, I will add use TP 304 flanged valves and use F22 flanges on your P22 pipe to make the connection between your valve and your pipe.

luis marques

 

[MaterialPurchaser]

625 or ERNiCr-3 or similiar nickel content.

Chad Kinnaird