ANSONIA COPPER & BRASS, INC.

 

 

 

COPPER ALLOY DATA SHEET

 

ACB 3180

 

Lead-free Commercial Bronze, Nickel Bearing ACB 3180 is composed of approximately 89% copper, 9.4% zinc, 1% nickel, and 0.6% tellurium.  The alloy combines the natural corrosion resistance of commercial bronze, the higher strength associated with the addition of nickel, and the higher machinability from tellurium typical of free cutting leaded commercial bronzes.

 

The relatively low zinc content provides excellent corrosion resistance in potable water along with a pleasing golden color that matches C22000 hardware.  It also possesses a particular resistance to stress corrosion cracking.  The tellurium in the alloy enhances its machinability and formability without the detrimental effects often attributed to lead in machining grade alloys.  It is an alloy suitable for outdoor use where higher strength is required.

 

Hot and Cold Working:  ACB 3180 has fair hot workability.  Although it is primarily used for high-speed screw machining, it has good cold workability, sustaining a moderate degree of cold work, and is suitable for cold working operations such as bending.

 

Joining:  Joining by soldering is excellent, and by brazing is good.  The tellurium content prevents successful welding.

 

Applications:  ACB 3180 was developed at Ansonia Copper & Brass, Inc. to provide a non-leaded commercial bronze suitable for plumbing and hardware applications.  The addition of nickel to ACB 3180 gives added strength where mechanical properties are needed in applications such as builders' and lock hardware.

 

Standard Forms Available:  Rod, bar and wire

 

 

 

 

 

ADS No. 3180

Rev. No. 2

Rev. Date 10/19/00

ACB 3180

 

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 ACB 318

 

 

Nominal Composition:                        89% Copper

                                                                9.4% Zinc

                                                             0.6% Tellurium

                                                                1.% Nickel

 

Physical Properties:

 

            Melting Point (Liquidus):                                            1040°C (1900°F)

                                   (Solidus)                                                1010°C (1850°F)

            Density at 68°F:                                                         0.320 Lbs./In.3

            Coefficient of Linear Thermal Expansion per °F:     1.011 x 10-5 (68-527°F)

            Electrical Conductivity at 68°F (volumetric):           32% IACS (in annealed condition; lower in hard temper)

            Thermal Conductivity Btu/ft.2/ft./hr./°F at 68°F:       81

            Modulus of Elasticity - Tension:                                 17,000 ksi

 

Fabrication Properties:

 

            Annealing Temperature:                        425-650°C (800-1200°F)

            Approximate Relative Machinability:    80 (Free cutting brass arbitrarily rated at 100.)

 

Mechanical Properties:

 

Rod

Tensile Strength

(psi)

Yield Strength

(0.5% EUL) (psi)

% Elongation

(in 2")

Rockwell Hardness

 

 

 

 

 

Hard (38%)

70,000

60,000

12

HRB 78

 

 

 

 

 

 

 

 

 

 

ADS No. 3180

Rev. No. 2

Rev. Date 10/19/00

ACB 3180

 

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.