Bridge Pins, was Bridge Capping Materials: Ebony?

[Dean May]

Hardness in steel is tested by machines that try to put a dent in it.
The bigger the dent, the softer the steel. The hardness number given is
inversely proportional to the diameter of the dent left in the steel. In
other words, the smaller the hardness number the harder the steel. 

Check out http://www.gordonengland.co.uk/hardness/vickers.htm 

Dean
Dean May             cell 812.239.3359
PianoRebuilders.com   812.235.5272
Terre Haute IN  47802


-----Original Message-----
From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] On
Behalf Of Ron Nossaman
Sent: Friday, December 02, 2005 5:41 PM
To: Pianotech
Subject: Re: Bridge Pins, was Bridge Capping Materials: Ebony?


> Titanium probably does resist grooving better that what is 
> usually used for bridge pins. 

I find a Vickers hardness of 60 for titanium, and 98 for mild steel. 
Why would titanium "probably" resist grooving better when it's a 
softer material?


> I've thought about stainless, is it 
> harder than what we usually use?  Any other improvements to consider?

Go here.
http://www.matweb.com/search/search.asp
Prospect to your heart's content.

Ron N
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