[TheForge] Steel Vs. Glass

Sat Aug 23 17:08:12 2003

OK mild steel.

----- Original Message ----- 
From: "A. Vida" <[email protected]>
To: <[email protected]>
Sent: Saturday, August 23, 2003 12:08 PM
Subject: Re: [TheForge] Steel Vs. Glass

> 
> 
> Ed F wrote:
> > 
> > You can easily scratch steel with glass.  But you can't easilly scratch
> > glass with steel.
> 
> Ce?!  I take it you are not aware that this is not at universally
> the case?  Just to give an extreme example, take an M-2 HSS lathe
> tool.  It will scratch glass quite readily but I do not think 
> that there are too many glass compositions that will scratch it
> readily.
> > 
> > Is the difference in abrasion resistance explained by the ductility,
> > brittlness, combination of the two or none of the above?
> 
> You talk of steel and glass as if they were entities with only
> a single set of well defined properties.  Clearly this is not
> the case.  There are literally thousands of different steels.
> Add to them the usually broad continuum of physical properties
> those steels may possess, imparted by physical working, heat
> treating, etc., and you have a very large range of possible
> properties from dead soft (e.g. pure iron) to extremely hard
> (e.g. nitrided steel).
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