ANSONIA COPPER & BRASS, INC.

COPPER ALLOY DATA SHEET

C26000

Cartridge Brass C26000, so named because it is the standard material used to make artillery shell and ammunition cartridge cases, has a nominal composition of 70% copper and 30% zinc. Its color is full brass yellow. It offers excellent to good corrosion resistance in most environments, but it is not suitable for use with certain materials; for instance, acetic acid, moist ammonia or ammonia compounds, hydrochloric acid and nitric acid. The alloy is noted not only for its good corrosion resistance, but also for its damping characteristics, retention of spring, wear resistance, and moderate strength.

Hot and Cold Working: C26000 has only fair hot workability. However, being the most ductile of the brasses, it has superior cold ductility and as a cold heading alloy, is used in greater quantity than any other brass.

Cold Heading: C26000 can be supplied as cold heading wire to form a wide variety of parts. For best cold heading formability, an alloy should combine a low plasticity index (ratio of proportional limit to ultimate tensile strength) with a high reduction in area. In 1/4 hard temper, the plasticity index of this metal is 51%, and the reduction in area is 80%. In 1/2 hard temper, the plasticity index is 58%, and the reduction in area is 73%.

Joining: Joining by soldering and brazing is excellent. Joining by oxyacetylene welding is also good, but gas shielded arc welding only fair. Rod, bar, and wire may be resistance flash butt-welded.

Applications: C26000 is the standard material used to make for innumerable parts made by drawing and other forming processes, although it is not one of the free-cutting copper metals. It is used most frequently in applications where material, maintenance, and tooling costs are important. The following list merely suggests the range of its applications: clips, fasteners, rivets, screws, terminal connectors, odometer contacts, watch parts, decorative hardware, bathroom fixtures, and sound proofing equipment.

As wire, it is used to make wire screens and fireplace screens for indoor use, bird cages, and to form springs of almost every type, except those exposed to weather, due to its good work hardening characteristics.

Applicable Specifications: When so specified, C26000 will be manufactured to the latest revision of the following specifications: ASTM Specification B134 for wire, B135 for tube, AMS Specification 4555 for tube.

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

ADS No. C26000

Rev. No. 3

Rev. Date 10/20/00

C26000

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 C26000

Nominal Composition: 70% Copper

30% Zinc

Physical Properties:

Melting Point (Liquidus): 955°C (1750°F)

(Solidus): 915°C (1680°F)

Density at 68°F: 0.308 Lbs./In.³

Coefficient of Linear Thermal Expansion per °F: 1.11 x 10^-5 (68-572°F)

Electrical Conductivity at 68°F (volumetric): 28% IACS (in annealed condition; lower in hard temper)

Thermal Conductivity Btu/ft.²/ft./hr./°F at 68°F: 70

Modulus of Elasticity - Tension: 16,000 ksi

Modulus of Rigidity: 6,000 ksi

Fabrication Properties:

Hot Working Temperature: 725-850°C (1350-1450°F)

Annealing Temperature: 425-750°C (800-1400°F)

Approximate Relative Machinability: 30 (free cutting brass arbitrarily rated at 100.)

Mechanical Properties:
Wire	Tensile Strength (psi)	Yield Strength (0.5% EUL) (psi)	% Elongation (in 2")
OS 050	48,000	--	64
OS 035	50,000	--	60
OS 025	52,000	--	58
OS 015	54,000	--	56
H00	58,000	--	35
H01	70,000	--	20
H06	124,000	--	4
H08	130,000	--	3
1.0" Dia. Rod
OS 050	48,000	16,000	65
H00	55,000	40,000	48
H02	70,000	52,000	30

ADS No. C26000

Rev. No. 3

Rev. Date 10/20/00

C26000

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.