What are the disadvantages of using 45 steel for shaft components?
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1: A student. I would like to ask what are the disadvantages of using 45 steel for shaft components? Can 65Mn steel be used as a substitute? 2: I saw on Baidu Baike that alloy steels such as Cr15 and 65Mn can be used in applications that require high precision but operate under harsh conditions; after quenching and tempering as well as surface hardening, these materials exhibit good wear resistance and fatigue strength. But after searching through all available information, I couldn’t find any use of 65Mn for shaft components I would like to ask for your guidance on where I can find relevant academic papers and such I searched in databases such as CNKI, but really couldn’t find this introduction
Steel grade 45 is a medium-carbon steel with high hardness and relatively low brittleness; it requires quenching and tempering treatment, and 40Cr is more commonly used. 65Mn is an elastic steel that is wear-resistant; however, it is generally hard and brittle, and is used only when there are special requirements. I hope you can refer to this, look up more information, and conduct analysis and comparisons.
For axes that are not particularly important, 45 steel can be considered; the key is to ensure proper heat treatment and flaw detection. 65Mn is used as a spring steel in the manufacture of shaft components due to its good elasticity and wear resistance, as seen in construction machinery
45# steel is the most widely used steel for shafts, as it possesses excellent comprehensive mechanical properties
For applications with slightly poor operating conditions, steel grade 45 is not necessary; since our medium consists mainly of urine, the shaft material is usually 2Cr13； 65Mn is generally used in environments with high medium temperatures!
Well, thank you. I don’t know how to rate it either. I’ve searched through all available materials but couldn’t find any information on 65Mn being used for drive shafts; it’s really frustrating
Is it really useful to use 65Mn for shafts? Are there any specific examples? ! ! ! ! ! ! ! ! ! ! !
65Mn is generally not used for drive shafts; it is commonly used in the manufacture of springs.
Haha, there’s also a drive shaft with a spring-like structure
If you go and take a look at torsion springs, you’ll understand. What I’m referring to is making use of the good elastic properties of 65Mn steel, in comparison with the torsional properties of ordinary 45 steel after heat treatment.
A torsion bar spring is a type of spring, but it is not a drive shaft; it is not used for transmitting power