Is there a fatigue factor when calculating cold vs hot rolled designs?
Is there a fatigue factor when calculating cold vs hot rolled designs?
(OP)
I am aware of some of the advantages in cold vs hot rolled products.
This is what I have:
1050 steel shaft, currently cold rolled and turned down to size, and threads added.
Possible savings in switching to a hot rolled product.
The UTS/YTS of the hot rolled product is less, but still within the endurance limit of the design.
Is there a quantitative factor I can use to show a difference between hot and cold rolled?
I would image the grain structure benefits of cold rolled would play a part? Or is this already realized in the higher mechanical properties.
This is what I have:
1050 steel shaft, currently cold rolled and turned down to size, and threads added.
Possible savings in switching to a hot rolled product.
The UTS/YTS of the hot rolled product is less, but still within the endurance limit of the design.
Is there a quantitative factor I can use to show a difference between hot and cold rolled?
I would image the grain structure benefits of cold rolled would play a part? Or is this already realized in the higher mechanical properties.





RE: Is there a fatigue factor when calculating cold vs hot rolled designs?
RE: Is there a fatigue factor when calculating cold vs hot rolled designs?
The bar is 1.25" dia and it has 1" threads that are cold rolled. Most of the bar is machined to 1.125" with a few transitions to less then 1"
I image my fatigue failure locations would be in one of these machined transitions as the threads are rolled.
So... any benefit to cold rolled material?
RE: Is there a fatigue factor when calculating cold vs hot rolled designs?
You may want to think about rolling the threads since you are giving up a bit of strength.
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RE: Is there a fatigue factor when calculating cold vs hot rolled designs?