NiCrMo-3 or 309L for Welding Carbon Steel to Stainless Steel
NiCrMo-3 or 309L for Welding Carbon Steel to Stainless Steel
(OP)
Hi Guys,
I am seeing more and more customers specify NiCrMo-3 for welding dissimilar welds instead of 309/309L, i.e CS to SS.
Can anyone help me understand why?
Thanks
I am seeing more and more customers specify NiCrMo-3 for welding dissimilar welds instead of 309/309L, i.e CS to SS.
Can anyone help me understand why?
Thanks





RE: NiCrMo-3 or 309L for Welding Carbon Steel to Stainless Steel
RE: NiCrMo-3 or 309L for Welding Carbon Steel to Stainless Steel
Could you or someone else elaborate on why 309/309L is not so good at the higher temps?
Thanks
RE: NiCrMo-3 or 309L for Welding Carbon Steel to Stainless Steel
As stanweld told 309/309L is not so good at the higher temps due to thermal expansion coefficient mismatch issues. In other words in high temperatures the CS and the SS will not have equal expansion and thus induced stresses will be produced. Such stresses may give cracking in the weldment. Please note that the nickel filler metals give welds that have thermal expansion coefficient between stainless steel and carbon steel. Please have a look at this post: http://www.weldinguide.com/gdanastasiadis/viewtopi...
that cllarifies such an issue
regards
wegm
RE: NiCrMo-3 or 309L for Welding Carbon Steel to Stainless Steel
Richard
RE: NiCrMo-3 or 309L for Welding Carbon Steel to Stainless Steel
RE: NiCrMo-3 or 309L for Welding Carbon Steel to Stainless Steel
RE: NiCrMo-3 or 309L for Welding Carbon Steel to Stainless Steel
Ian
RE: NiCrMo-3 or 309L for Welding Carbon Steel to Stainless Steel
RE: NiCrMo-3 or 309L for Welding Carbon Steel to Stainless Steel
RE: NiCrMo-3 or 309L for Welding Carbon Steel to Stainless Steel
Is there a similar problem when PWHT'ing a dissimilar joint between carbon steel and stainless steel using 309 as the filler. The time at the elevated temp may only be 1 to 2hrs.
thanks
RE: NiCrMo-3 or 309L for Welding Carbon Steel to Stainless Steel
RE: NiCrMo-3 or 309L for Welding Carbon Steel to Stainless Steel
Development of a New Nickel Filler
for Dissimilar Metal Welds and
Repair
1018991
Final Report, July 2009
RE: NiCrMo-3 or 309L for Welding Carbon Steel to Stainless Steel
Repair Methods for Dissimilar
Metal Welds—Development,
Weldability, and Properties of
EPRI P87 Solid Wire Filler Metal
1019786
www.epri.com Final Report, December 2011
RE: NiCrMo-3 or 309L for Welding Carbon Steel to Stainless Steel
RE: NiCrMo-3 or 309L for Welding Carbon Steel to Stainless Steel
Thanks so much for your help.
RE: NiCrMo-3 or 309L for Welding Carbon Steel to Stainless Steel
I really beg your pardon but, the OP never mentioned that the application would be at high temperature, it was only said "welding CS to SS". So, it can be inferred that, for a "not high temperature application" (< 700°F) the filler 309 can be used?
El que no puede andar, se sienta.
RE: NiCrMo-3 or 309L for Welding Carbon Steel to Stainless Steel
The OP's question was to understand why ERNiCrMo-3 is specified. I believe that question has been answered; however, I have not seen ER/ENiCrMo-3 being mandated for use with austenitic stainless steel to carbon steel welds regardless of operating temperature conditions. We normally see Owner requirements for ERNiCr-3 and similar ENiCrFe-X weld filler metals for these joints when operating temperatures dictate. For lower tempearture applications and those applications that do not require PWHT, ER/E309 is most commonly specified.
RE: NiCrMo-3 or 309L for Welding Carbon Steel to Stainless Steel
I should have stated that my question was in regards to operating temps >600F.
Thanks