4140 vs 4130
4140 vs 4130
(OP)
Hey Guys:
I am looking for some more detailed information about the difference between 4130 and 4140 alloy. What if a tube size is
4130 .750 OD X .156 W (.438 ID)
vs
4140 7/16" outside diamter x 14 gauge (.083")
Now i know that 4140 has a higher carbon content than 4130 but if you have a larger diameter 4130 over the 4140 where does that 4130 become equally strong if not stronger than the 4140. 4140 is harder yes and can be hardened to a high Rockwell but doesn't that also make the material more brittle?
I am open to all information on this topic.
I am looking for some more detailed information about the difference between 4130 and 4140 alloy. What if a tube size is
4130 .750 OD X .156 W (.438 ID)
vs
4140 7/16" outside diamter x 14 gauge (.083")
Now i know that 4140 has a higher carbon content than 4130 but if you have a larger diameter 4130 over the 4140 where does that 4130 become equally strong if not stronger than the 4140. 4140 is harder yes and can be hardened to a high Rockwell but doesn't that also make the material more brittle?
I am open to all information on this topic.





RE: 4140 vs 4130
RE: 4140 vs 4130
RE: 4140 vs 4130
RE: 4140 vs 4130
If this is for a heat exchanger, you probably want to bias toward thinner gauge for efficiency. If this is a structural application, remember that strength is a function of geometry as well as material properties.
"If you don't have time to do the job right the first time, when are you going to find time to repair it?"