On Mon, 11 Mar 2019 16:30:12 -0700, MOP CAP wrote:
A few kinds of stainless steel are used in golf club heads (see eg
<https://www.hirekogolf.com/clubheads-material-differences ) but it
looks like all of those mentioned there (17-4, 431, maraging) are
martensitic and magnetic. Zinc putter heads are mentioned near the
end of the page, and are a good possibility for a $1 putter. Zinc
is a little less dense than iron but significantly softer. If it's
zinc you could easily drill it, or carve shavings off.
Lots of them have been made of bronze, which is quite heavy compared
to steel and steel alloys. Its density varies a bit with the alloy but
it's generally around 8.5 g/cm^3 versus 7.7 for steel. Some bronze
alloys, such as gunmetal, do not look like brass.
There also are tungsten-head putters. They're much heavier still --
19.3 g/cm^3 -- alsmot twice as heavy as lead.
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