ANSONIA COPPER & BRASS, INC.

COPPER ALLOY DATA SHEET

C18900

ACB Copper C18900 was originally developed to make some of the finest quality welds possible in copper. Its nominal composition (98.7% copper, 0.8% tin, 0.3% silicon, 0.2% manganese) also allows one to fabricate equipment for services requiring that both weld and base metal be of the maximum copper content. The alloy is noted for its corrosion and galling resistance, as well as it weldability.

Hot and Cold Working: Although this alloy is typically used as welding rod and wire for joining processes, it possesses both excellent hot and cold workability.

Joining: ACB Copper C18900 can be used with all the inert-gas arc welding processes as well as the oxyacetylene process. It creates weld metal that is sound, ductile, and of maximum strength. Welds made with this alloys on phosphorized copper develop the full strength of the annealed base metal without the costly working or hammering required when ordinary copper rods are used.

Applications: Typically used as welding rod and wire for inert gas, tungsten arc and oxyacetylene welding of copper.

Applicable Specifications: When so specified, C18900 will be manufactured to the latest revision of the following specifications: MIL-E-45829 and/or AWS A5.6 for welding electrode wire, and AWS A5.7 for welding rod.

Standard Forms Available: Rod and wire. For other forms, please consult Ansonia Copper & Brass, Inc.

ADS No. C18900

Rev. No. 5

Rev. Date 7/1/99

C18900

P. O. Box 109 - Ansonia, Connecticut 06401	725 Bank St. – Waterbury, Connecticut 06708
Tel.: 1-800-521-1703 FAX 203-735-3787	Tel.: 1-800-243-3204 FAX 203-756-1330

PROPERTIES OF C18900

Nominal Composition: 98.7% Copper

0.8% Tin

0.3% Silicon

0.2% Manganese

Physical Properties:

Melting Point (Liquidus): 1075°C (1967°F)

Density at 68°F: 0.322 Lbs./In.³

Electrical Conductivity at 68°F (volumetric): 30% IACS (in annealed condition; lower for hard temper)

Thermal Conductivity Btu/ft.²/ft./hr./°F at 68°F: 75

Fabrication Properties:

Annealing Temperature: 500-600°C (925-1100°F)

Approximate Relative Machinability: 20 (free cutting brass arbitrarily rated at 100)

Mechanical Properties:
Rod	Tensile Strength (psi)	Yield Strength (0.5% EUL) (psi)	% Elongation (in 2")
0.125" Dia. – Soft	38,000	9,000	48
0.125" Dia. – Hard (35%)	56,000	52,000	14
Wire
0.045" Dia. – Hard (99%)	95,000	--	--
0.062" Dia. – Hard (96%)	90,000	--	--
0.093" Dia. – Hard (92%)	84,000	--	--

ADS No. C18900

Rev. No. 5

Rev. Date 7/1/99

C18900

The statements and data provided on this data sheet are to be considered only as a general guide. Commercial variations in material properties are expected, so values listed here are not intended to be used for specifications. Please consult the appropriate industry specifications where applicable. Ansonia Copper & Brass, Inc. also cannot assume responsibility for performance of these products in service because we do not control or supervise subsequent use of our products.