12L14 Cold forming
12L14 Cold forming
(OP)
Hi,
I'm having some trouble with cold forming tubular parts made of SAE 12L14 steel. We machine parts from 12L14 cold drawn bars which are heated to ~500°C during 9s after machining to stress relief, even with the heat treatment, some of the parts breaks during the bending.
I always have used free machining steels for this kind of part with cold bending, but usually with SAE 1215 steel, this is the first time with 12L14. Could this problem be related with the added lead?
Thanks in advance!
I'm having some trouble with cold forming tubular parts made of SAE 12L14 steel. We machine parts from 12L14 cold drawn bars which are heated to ~500°C during 9s after machining to stress relief, even with the heat treatment, some of the parts breaks during the bending.
I always have used free machining steels for this kind of part with cold bending, but usually with SAE 1215 steel, this is the first time with 12L14. Could this problem be related with the added lead?
Thanks in advance!
RE: 12L14 Cold forming
SAE 1215 adds S and P, but not Pb.
SAE 1214 adds all three, which is the horror scenario for everything other than machining.
So yes I think your problem is directly related to the change in material.
BTW if your part carries potable water it should NEVER be made using lead-bearing material.
"Everyone is entitled to their own opinions, but they are not entitled to their own facts."
RE: 12L14 Cold forming
This kind of part are applied for hydraulic oil, so we are safe about lead contamination in water.
RE: 12L14 Cold forming
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P.E. Metallurgy, consulting work welcomed