309 is best one
On 2/7/13, Ramin Kondori <
raminkondori@gmail.com> wrote:
> 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
>
> On 2/7/13, Ezat Adel <
ezatadel2008@gmail.com> wrote:
>> 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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