SA 182 F22 welding

[WeldGk]

Does anyone know of a source of information for this material? I have not been able to find much information and am working towards developing a weld procedure.

 

[metengr]

KimberleyS;
If you need a source of information for this material, my advice to you is to review the following;

Material Specification - ASME Boiler and Pressure Vessel Code, Section II, Part A Ferrous Material. The SA 182 is a material specification where you will find the stated chemical composition requirements and mechanical property requirements for this Grade of low alloy steel.

For welding procedure development, I would suggest ASME Boiler and Pressure Vessel Code, Section IX. Here you will find the necessary requirements for weld procedure qualification and welder qualification.

Both Section II and Section IX are requirements for what you need for development of a weld procedure.

 

[WeldGk]

Metengr

My question was meant to be directed towards finding information regarding experiences welding this material specifically. Has anyone welded this material and has any sources of information that are specific to property changes during welding, distortion due to welding, etc...

 

[metengr]

KimberleyS;
Ok. We have welded on this material for a number of years. It is very weldable. If you are familiar with Grade 22, which is a 2.25% Cr- 1% Mo product from in tube or pipe, Grade D is a plate product form of 2.25% Cr-1% Mo and the F product form is a forging. All three product forms are very weldable and follow the preheat and post weld heat treatment requirements in the code of construction.

What more do you need? If you are looking for metallurgical information on this material, use the internet and Google search for 2.25% Cr-1% Mo steel.

 

[WeldGk]

Thank you, this is very helpful.

 

[moltenmetal]

Welding this material WITHOUT doing post-weld heat treatment is very, very difficult. You'll wish you didn't...

 

[WeldGk]

PWHT will be part of the procedure. Thanks,

 

[stanweld]

Proper application of preheat is paramount. Low preheat temperature can lead to delayed (hydrogen) cracking, especially when PWHT can not be done immediately after or within a short time after weld completion.

 

[WeldGk]

PWHT will be completed within 3 hours of welding completion.

In terms of preheat, any specific suggestions?

 

[0707]

pre heat is required at 177º C


lm

 

[Mr168]

We preheat to 400F for all P5A's if the tensile strength is over 60 KSI, or a thickness greater than 1/2".

 

[WeldGk]

For thin-section welding, would you lower your preheat? Thus far, 400F has been the baseline. This preheat would be the same for both overlay and butt welds?

 

[0707]

For preheat and pwht in F22 2 1/4 Cr 1 Mo materials I sugest you to consult tables 330.1.1 and 331.1.1 of ASME B31.3

luis marques

 

[metengr]

For thin-section welding, would you lower your preheat? Thus far, 400F has been the baseline. This preheat would be the same for both overlay and butt welds?

No, with the exception of a root pass using GTAW for groove welds. Preheat would apply for overlay and butt welds again with the exceoption of the root pass (lower preheat to 300 deg F).