Re: [MW:16716] welding of 13% cr steel

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.

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From: Ezat Adel <ezatadel2008@gmail.com>
To: materials-welding@googlegroups.com
Sent: Thursday, 7 February 2013 8:00 PM
Subject: [MW:16712] welding of 13% cr steel

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 

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