Heat Treating and UTS Graphs
Heat Treating and UTS Graphs
(OP)
Hi everybody!
Looking for some help. I'm trying to compare and ultimately duplicate a 4130 tubing graph after UTS testing of two similar materials.
In graph 1, this is the material I currently have. The graph shows that it is very resilient up to the yield point and very linear (and typical of the UTS graphs I see from past testing).

In graph 2, this the material I want to duplicate. On the graph it is much more pliable and progressive all the way to yield on to max tensile.

Could this be a post welding heat treat that changes the material in graph 2 to act this way? Both materials are extremely similar in yield, UTS and elongation. They are also the same heat treat finish GBK (+A), and they also are extremely similar on the chemical analysis. I'm really at a loss to explain the large difference in the graph shape and what can be done to the material I have to make it behave in a similar fashion.
Looking for some help. I'm trying to compare and ultimately duplicate a 4130 tubing graph after UTS testing of two similar materials.
In graph 1, this is the material I currently have. The graph shows that it is very resilient up to the yield point and very linear (and typical of the UTS graphs I see from past testing).

In graph 2, this the material I want to duplicate. On the graph it is much more pliable and progressive all the way to yield on to max tensile.

Could this be a post welding heat treat that changes the material in graph 2 to act this way? Both materials are extremely similar in yield, UTS and elongation. They are also the same heat treat finish GBK (+A), and they also are extremely similar on the chemical analysis. I'm really at a loss to explain the large difference in the graph shape and what can be done to the material I have to make it behave in a similar fashion.





RE: Heat Treating and UTS Graphs
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P.E. Metallurgy, Plymouth Tube
RE: Heat Treating and UTS Graphs
RE: Heat Treating and UTS Graphs
Have you looked at micros?
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P.E. Metallurgy, Plymouth Tube
RE: Heat Treating and UTS Graphs
RE: Heat Treating and UTS Graphs
RE: Heat Treating and UTS Graphs
I'm really at a loss to explain the graph shape. Seems like everyone I talk to can't explain how to get 4130 tubing to look copy the graph either.
I'd love to see a UTS graph for stainless steel tubing. I am wondering if it could possibly look similar.