welding different grades of steel?
welding different grades of steel?
(OP)
Hi. What are the limitations in welding different grades of carbon steel? For instance, can I weld grades 1045 and 4140 together?
If I use SMAW, can I just specify electrode E60 and not worry about the grades of steel that I'm welding?
Thanks
If I use SMAW, can I just specify electrode E60 and not worry about the grades of steel that I'm welding?
Thanks





RE: welding different grades of steel?
1. Material thickness and weld joint detail.
2. Preheat.
3. Selection of filler metal - one size does not fit all applications. The selection of filler metal is based on matching one or more of the two base materials you intend to join. The filler metal can be under or overmatched in terms o composition and strength properties.
4. Need for post weld heat treatment to achieve certain properties of the weld region.
I am not going to get into any further detail than above. My suggestion is to hire the services of a welding engineer.
RE: welding different grades of steel?
I'm a mechanical designer. I'm trying to understand what materials/welds I can specify on fabrication drawings, especially when the grades of material differ, which is likely if say I'm welding a RHS to plate. I guess the welding shops will always recommend alternative materials/weld types when they quote for the parts.
RE: welding different grades of steel?
RE: welding different grades of steel?
"If you don't have time to do the job right the first time, when are you going to find time to repair it?"
RE: welding different grades of steel?
B.E.
You are judged not by what you know, but by what you can do.
RE: welding different grades of steel?
1. Yes you can weld 1045 to 4140.
2. You should not indicate electrode E60. The fabricator may well take you at your word and you will end up with a weld with inadequate strength and will very likely crack. A Change Order may be required to correct the problem and you will pay dearly for the Change.
RE: welding different grades of steel?
RE: welding different grades of steel?
GTAW I would use ER70-S6
These are extremely common fillers, and a slight overmatch for the 1045. Not hardenable, and an undermatch for the 4160. Thus the cautions you are getting on the welding of these two wildly dissimilar steels.
RE: welding different grades of steel?
RE: welding different grades of steel?