Furnace
Room 
8981 SE 76th Drive Portland Or U.S.A. Phone 503-771-3346 Fax
503-771-9702 E Mail barrcast@barrcasting.com
Please
note: This brand of alloy is
no longer made. However there are other smelters making
there own version of this metal.
Please check with us for availability.
We offer many different alloys for you to choose
from.
This page, in particular, is dedicated to giving the
specifications for,
formally Bronwite. Now available, White Tombasil UNS No C99700. The ingot numbers
that you
find listed in the furnace room pages, such as UNS
No C99700, are the alloys that we
have found to be the most popular, and are arranged in three main
categories (Bronze, Aluminum, and Zinc.) We have an inventory of
each of the alloys listed in the furnace room pages, while other alloys
are available on request.
(Tip) Please keep in
mind that each alloy is engineered for a particular purpose. For
example, sheet metal can require different characteristics of an alloy
than tubing, extruded metal or sand casting . Because certain projects require different alloy
characteristics, we certify our alloys. Not all foundries offer
alloy certification, and some cast their parts from mixed alloys of
scrap. This can greatly weaken an alloy, or make it
unpredictable. If you have a particular purpose, that will
require the full strength of your metals property's with predictable
result's, then certified material is crucial. At Barr Casting we
keep a record of the certifications for each new bundle of ingot.
Please note: In the designation system numbers from
C1000
through C7999 denote wrought (sheet and plate)
alloys. Cast
alloy UNS No. numbers start at C80000 through
C99999
Note: The unified numbering system
(UNS) is an alloy designation system, widely accepted in North America.
White
Tombasil is the equal
of nickel silver, some times called, German
silver in respect to color, luster, strength, ductility, hardness, and
it
is a grate deal more versatile because of its lower melting
temperature.
Major uses: Ornaments, Marine
Hardware, Musical instruments Parts, Building Hardware, Flanges.
White Tombasil
| Copper |
min 54.0 to 56.5
max |
| Tin |
1 max |
| Lead |
min1.5 to 2.0 max |
| Nickel |
min4.0 to 6.0 max |
| Zinc |
min19.0 to 25 max |
| Manganese |
min11.0 to 15.0 max |
| Aluminum |
min .50 to 3.0 max |
| Iron Typical Properties |
1.0 max |
| Weight lbs/ in 3 |
0.29 |
| Pattern makers shrinkage in /ft |
5/16 |
| Tensile strength, Ksi |
sand cast 60-70 |
Die cast 75 |
| Yleld strength, Ksi |
30-35 |
40 |
| Elongation % in 2" |
20-40 |
20 |
| Brinall hardness (500 Kg) |
110 |
119 |
| Machine ability rating |
- |
- |
| Heat treatment |
- |
- |
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