welding 4140 to st 37
welding 4140 to st 37
(OP)
hello,
I need info about welding (corner weld 2 passes) st 37 on a 4140 shaft. Can this be welded with 16%Cr and 65 % Ni electrode ?
I need info about welding (corner weld 2 passes) st 37 on a 4140 shaft. Can this be welded with 16%Cr and 65 % Ni electrode ?





RE: welding 4140 to st 37
RE: welding 4140 to st 37
Yes, this consumable can be used for the application detailed. Refer to Metalguy's words of caution though.
Metalguy
for St37 refer following posts:
Thread330-62886 refersa to St37 which is equivalent of S235
Thread330-56039 refers to USt37-2 which is equivalent of A283
Finally see the last post in Thread330-17608 which explains what St37 stands for!!!
Thanks and regards
Sayee Prasad R
Ph: 0097143968906
Mob: 00971507682668
email: sayee_prasad@yahoo.com
The whole of science is nothing more than a refinement of everyday thinking!!!
RE: welding 4140 to st 37
Thanks for reply
Shaft will be preheated at 250degree C(482 degree F) . After welding, the shaft will be "insulated" during some time, so cooling will be slowly.
St 37 Analyse : %C <=0.17
%Si <= 0.55
%Mn <=1.60
%P <=0.04
%S <=0.04
RE: welding 4140 to st 37
I did a little study with a low alloy steel (P3) welded with the worst case-a single pass. Preheating to 400 deg. F. wasn't high enough, but we never did go back and try higher temps.
RE: welding 4140 to st 37
RE: welding 4140 to st 37
This is a proposal from manufacturer
RE: welding 4140 to st 37