ShopTalk: Carbon Steel/from Tom W

[jhm]

here's another one from TomW. I was going to erase his name and pretend it was my answer but he probably would have noticed...:-) john

Mike:
Yes it would - in the normal naming convention for steels under the AISI
(American Iron and Steel Institute) edicts, the number 10 means carbon
steel while the 20, 30, 40 etc means the percentage of carbon in terms
of tenths of a percent - normally then you get 1020 carbon steel to be
0.20% Carbon, 103- is 0.30% and so forth. The nomenclature of S30C is
from Japan - wouldn't it be nice if we all used the same terms and spoke
the same language but we don't. Virtually all of the high tech
countries have their own nomenclature for materials and each one is
different - at least in carbon steels the Japanese use the 20, 30, 40
etc to denote the carbon percentage.

Lower the carbon content, softer the steel. A 1020 or S20C would really
be so soft that it would 'ding' very easily from ironheads clacking
against each other in the bag - that would be the primary reason that I
would not use it in a forged carbon steel iron design. 1030 or S30C
would be where I would draw the line - for the limited benefits of going
softer in the steel (tighter packing the forging dies is one good one
though for fewer voids in the microstructure of the steel in the
forging) you do have to watch the durability because most golfers cannot
see the reduction of voids inside the head, but they sure can see the
dings after a year of play. And in terms of feel - nada in my book for
that so no benefit to going softer for feel - only for the forging die
being able to compress the steel tighter for a more dense head.

TOM W

-----Original Message-----
From: J. Mike Walker [mailto:[EMAIL PROTECTED]]
Sent: Monday, January 27, 2003 5:24 PM
To: [EMAIL PROTECTED]
Subject: ShopTalk: Carbon Steel

Ok metal experts, here is your chance to shine.
I was wondering about the s20c carbon. Is that softer than the 1030
carbon?
Thanks.

Mike Walker, [EMAIL PROTECTED]
www.WalkTech.com
--
Thanks!
John Muir
http://clubmaker-online.com
http://gripscience.com
http://tourpure.com
810.220.4918