4130 Endurance Limit
4130 Endurance Limit
(OP)
I am designing an axle shaft and have specified HT to be Rkw C 34-38 quench and tempered. Does anyone have a feel for what the endurance limit modifier should be as a funciton of the ultimate tensile strenght? I know that for most purposes I would start with half of the tensile strength and then use the appropriate deraters.
Thanks for your input.
Thanks for your input.





RE: 4130 Endurance Limit
http://www.fatiguecalculator.com/
RE: 4130 Endurance Limit
Why not do what others do? Up the endurance limit by going to 4340.
RE: 4130 Endurance Limit
RE: 4130 Endurance Limit
RE: 4130 Endurance Limit
There are factors beyond what some formulas may tell you.
The question was based on what truck axle manufacturers and race axle companies use; 4340 (which includes 300m), 1550 and "Hy-Tuf". Although 4130 is good for many things and highly weldable, it is not particularly inexpensive, much easier to work with than other alloys, or very popular for axles.