welding of 13% cr steel

[Ezat Adel]

Dear Experts,

 

i have to weld  (4 1/16'' 5K) Flange to ( 4'' Api 5L , X 60 ) Pipe, the flange material is 13% cr-110 and the mechanical properties as following:

 

Tensile Strength is 120,000 psi ,Yield Strength is 110,000min. & 130,000 max. , Hardness 32 HRC 

 

 and the chemical composition as following :

Grade	C	Si max.	Mn	P max.	S max.	Cr	Ni	Mo	Cu max.
13CR -110	max. 0.04	0.50	max. 0.60	0.020	0.010	12.0~14.0	3.50~4.50	0.80~1.50	-

 
 plz send me the proposed welding process and proposed filler metal and thanx for your attention 

[c sridhar]

Mr. Adel,

Because of the potential for cracking, alloy or carbon steel consumables must not be used when

welding alloy or carbon steel to stainless steels, and 400 series stainless consumables must not be

used when welding 400 series stainless to austenitic stainless.

 

When welding a martensitic or ferritic stainless steel to carbon or alloy steel, both sides of the joint can

be "buttered" or coated with an austenitic weld rod such as E/ER309 (or) 309Mo  or 312, , using

preheat and heat treating after buttering as necessary. Then the joint can be made without the need

for preheat.

Alternatively, the joint can be made using austenitic filler E/ER309 (or) 309Mo or 312, without the initial

overlays; however, control of dilution is critical in this case.

Sridhar.

---

From: Ezat Adel <ezatad...@gmail.com>
To: material...@googlegroups.com
Sent: Thursday, 7 February 2013 8:00 PM
Subject: [MW:16712] welding of 13% cr steel

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[Ramin Kondori]

Dear Ezat:

As a general recommendation for welding 13%Cr alloy you can use 309 or
310 filler metal (I recommend 310 over 309)
Use preheat of 250-300 degrees and try to maintain it during welding.
You may need PWHT (holding temperature is higher than 650 degrees)
based on the thickness of the pipe and your process fluid.

Regards
Ramin Kondori
QC/Welding Engineer
IWE AT 0070

[kannayeram gnanapandithan]

309 is best one

[Prakash Hegde]

Hi! For 13% Cr material i) If design temp is below 350C it is better to use 309MoL  ii) If design temp is higher It is better to use Inconel filloer i.e NCrFe2 or NiCrFe3 , or NiCrMo3 Regards   Hegde Prakash Pune --- On Fri, 8/2/13, kannayeram gnanapandithan <kgpan...@gmail.com> wrote:

> materials-welding+unsub...@googlegroups.com

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[Purav Desai]

Hi

refer to API RP 582. It has a table of selecting filler metal according to type of material to be welded.

Regards
Purav Desai

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