ANSONIA COPPER & BRASS, INC.

 

 

COPPER ALLOY DATA SHEET

 

C31600

 

Similar to C31400, Leaded Commercial Bronze, Nickel Bearing C31600 is composed of approximately 89% copper, 8% zinc, and 2% lead, but also contains 1% nickel.  This alloy combines the natural corrosion resistance and machinability of C31400 with a higher tensile and yield strength resulting from the controlled addition of nickel.  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.  It is an alloy suitable for outdoor use where higher strength is required.

 

Hot and Cold Working:  C31600 has poor hot workability due to its lead content, so hot working is not recommended; however, it can be successfully hot extruded into rod products.  Although it is primarily used for high-speed screw machining, it has good cold workability, sustaining a moderate degree of cold work.

 

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

 

Applications:  The composition of C31600 makes it one of the best alloys for cable clamps and pole-line hardware.  It is also typically used for electrical connectors, fasteners, hardware, nuts, screws, screw machine products, and sprinkler head components.

 

Applicable Specifications:  When so specified, C31600 will be manufactured to the latest revision of the following specification:  ASTM B140.

 

Standard Forms Available:  Rod, wire and shapes.  Normally, C31600 is supplied in half hard temper in rod and extruded shapes for screw machine products; however, special tempers can be designed for applications requiring added ductility to permit cold work (in addition to machining).

 

ADS No. C31600

Rev. No. 2

Rev. Date 10/20/00

C31600

 

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 C31600  

 

 

Nominal Composition:                        89% Copper

                                                                8.1% Zinc

                                                                1.9% Lead

                                                                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:     1.02 x 10-5 (68-572°F)

            Electrical Conductivity at 68°F (volumetric):           32% IACS (in the 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 rated at 100)

 

Mechanical Properties: 

 

 

Tensile Strength

(psi)

Yield Strength

(0.5% EUL) (psi)

% Elongation

(in 2")

Rockwell Hardness

0.500" Dia. Rod

 

 

 

 

Hard (38%)

67,000

59,000

13

HRB 72

 

 

 

 

 

1.0" Dia. Rod

 

 

 

 

Annealed 0.050 mm

37,000

12,000

45

HRF 55

Hard (38%)

65,000

57,000

15

HRB 70

 

 

 

 

 

 

ADS No. C31600

Rev. No. 2

Rev. Date 10/20/00

C31600

 

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.