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Hardening of 4140 2

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xydrex

Automotive
Joined
Mar 15, 2005
Messages
38
Location
AU
Hi, what impact on fatigue life would through hardening have on 4140 steel?
 
In general, with all other things equal, there is a direct correlation between tensile strength and fatigue limit for steels. As the tensile strength increases, the fatigue limit will increase.

Below is a web site that has various technical articles on fatigue (see "Effect of Metallurgical Variables on Fatigue". I believe you will find it informative on this subject;

 
Top link thanks
 
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