10 Spline Halfshaft Material

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AlbertDefender90

Active Member
Posts
955
Location
Ellesmere, Shropshire
Hi all,

I'm currently doing an assignment at uni and I have based it on a 10 spline halfshaft from a defender. Does anyone know what the material properties of the halfshafts are?

Thanks
Albert
 
It bloody hurts if you hit somebody over the head with one?




Try James Martin, this sounds like his territory.
 
You want to know the metallurgy of a half shaft?

It's a high carbon content (which is why if you look at a broken half shaft you can see the metal has a crystalline structure) it's then super super heated and quenched to harden it, it will then be tempered to remove some of the hardness, different heats will reduce the hardness of the metal, a half shaft is pretty damn hard as they don't want them to twist (nightmare to remove) but rather break and obviously they want them hard as hell so the forces can be transferred through them.

They will then use milling and grinding machines to put in the splines etc. they will then be ground at the bearing surfaces where it sits through the inner ring of the bearing which is then polished using abrasive stones and oil lubricant.
 
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i've being doing tensile strength at uni recently too but im only 1st year so a bit of a noob at the moment. I dont see how you would get the tensile for it as they wouldnt be tested for that, surely just torsion? or did you just mean the material type?
 
yield strength would be nice aswell

How long is a piece of string, if I was making a half shaft I may use better stronger steel than the manufacturers would use as they need to be sensible and save money!

Assuming it's a chomium molybdenum steel, then it could have a tensile strength of somewhere between about 50000 and 200000psi, it will have a hardness probably in the C Rockwell hardness scale or high B. It depends on the quality though.
 
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