superior spring (leaf spring) materials to 17-7 ch900
superior spring (leaf spring) materials to 17-7 ch900
(OP)
Hello all,
Do you have any suggestions for alternate spring materials, in sheet of plate form, with superior or similar properties to 17-7 ch900? Any material options are welcome. Titanium, composite, etc.
Thanks
Do you have any suggestions for alternate spring materials, in sheet of plate form, with superior or similar properties to 17-7 ch900? Any material options are welcome. Titanium, composite, etc.
Thanks





RE: superior spring (leaf spring) materials to 17-7 ch900
RE: superior spring (leaf spring) materials to 17-7 ch900
Intrisnic properties are less of a factor.
RE: superior spring (leaf spring) materials to 17-7 ch900
https://sites.google.com/site/israelkk/home
RE: superior spring (leaf spring) materials to 17-7 ch900
At this point its designed with 17-7 ch900. Lookng to up the displacement on the spring so in order to meet sress/fatigue I woulk like to investigate alternate materials in order to not change the envelope.
Just looking for spring material options here in plate or sheet form, that's all.
I've seen composite and titanium leaf springs in automotive racing applications hence Im asking.
RE: superior spring (leaf spring) materials to 17-7 ch900
1. Load and deflection desired?
2. Strip thickness?
3. Actual design and support fixing
You can try to look for Elgiloy (has higher strength for strip thickness below 1.2 mm).
RE: superior spring (leaf spring) materials to 17-7 ch900
Definately will look into Elgiloy, thank you for the suggestion.
RE: superior spring (leaf spring) materials to 17-7 ch900
RE: superior spring (leaf spring) materials to 17-7 ch900
I have considered titanium as the material for a pre-loader spring. The advantage of titanium is that it has a yield stress equivalent to spring steel, and a much lower elastic modulus. In an application with a given deflection, titanium will see a lower stress. The titanium spring can be deflected more than a steel spring.
I wound up calling up beryllium copper, which has yield stress and elastic modulus similar to titanium, but it appeared to be cheaper and more available. When the spring failed, I tested it with a current and ammeter, and it turned out to be pure copper, not beryllium copper.
What are you doing with your spring?
Do you have a source of titanium, and is your fabricator willing to fabricate it?
Beryllium copper is similar to titanium unless you have problems with corrosion and/or high temperatures. In the absence of a harness tester, your electrical technicians can verify the material.
I have designed springs out of Delrin. Typically, I needed high deflection, and I required or was willing to tolerate low force. Our machine shop likes Delrin.
If you are not having problems with large deflections, I would stick with conventional materials.