ANSONIA COPPER & BRASS, INC.

 

COPPER ALLOY DATA SHEET

 

C19140 and C19160

 

Leaded Nickel Coppers C19140 and  C19160 are unique precipitation hardening alloys containing copper, lead, nickel and phosphorus.  The nickel and phosphorus in the alloy combine to form nickel phosphide, which dissolves in the copper on heating to a suitable temperature, and can be retained by quenching.  Subsequent aging will precipitate the nickel phosphide from solid solution in a highly dispersed manner thereby creating a remarkable hardening and strengthening effect with excellent stress relaxation properties.  Subsequent cold working increases the strength still further.  A tensile strength exceeding 100,000 psi is obtainable with diameters of less than 0.100".

 

C19160 is nominally composed of 97.8% copper, 1.0% lead, 1.0% nickel and 0.2% phosphorus, while C19140 is nominally composed of 98.3% copper, 0.5% lead, 1.0% nickel and 0.2% phosphorus.  They are noted for their high corrosion resistance, high tensile and yield strengths, high electrical conductivity, machinability and resistance to stress relaxation.  Since the lead and nickel phosphide are not in solid solution when the alloys are in the precipitation hardened condition, the electrical conductivities are comparatively high.  When suitably heat treated, one can expect a conductivity of about 55% IACS.  The lead content also imparts good machinability to both alloys.

 

Good formability, headability, ease of plating and a high bend strength are also properties for which the alloys are known, allowing them to successfully replace the well known beryllium coppers in many applications where high strength, corrosion resistant alloys are needed.  There is a considerable cost advantage with the leaded nickel copper.

 

Hot and Cold Working:  C19140 and C19160 have fair hot workability and good cold workability.  The lower lead content in C19140 imparts somewhat greater cold workability, although slightly reduced machinability compared to C19160.

 

Joining:  Welding and brazing temperatures degrade the properties developed by heat treatment.  In addition, the lead content would prevent successful welding; however, brazing can be readily performed on soft metal.

 

Applications:  Because C19140 and C19160 exhibit one of the best all-around combinations of strength, machinability, conductivity and resistance to relaxation, the alloys are commonly used for electrical contacts, connector pins and sockets.  In general, the alloys are of special interest in the production of electronic equipment.

 

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

 

 

 

ADS No. 19140 & 19160

Rev. No. 0

Rev. Date 9/5/97

C19140 C19160

 

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 C19140 and C19160          

 

 

Nominal Composition:                       C19140                                                  C19160            

                                                           98.3%  Copper                                  97.8%  Copper

                                                             0.5%  Lead                                         1.0%  Lead

                                                             1.0%  Nickel                                      1.0%  Nickel

                                                             0.2%  Phosphorus                            0.2%  Phosphorus

 

Fabrication Properties:

                Hot Working Temperature:                                           750-875°C (1400-1600°F)

                Solution Annealing Temperature:                               700-800°C (1300-1475°F)

                Aging Heat Treatment Temperature:                           425-475°C (800-900°F)

                Approximately Relative Machinability:                     80 (C19160)

                                                                                                            75 (C19140)

                                                                                                            (Free cutting brass arbitrarily rated at 100)

 

Physical Properties:

                Melting Point (Liquidus):                                             1082°C (1980°F)

                                          (Solidus):                                                1038°C (1900°F)

                Density at 68°F:                                                              0.321 Lbs./in3

                Coefficient of Thermal Expansion per °F:                  9.8 x 10-6 (68-572°F)

                Thermal Conductivity:**                                              146 Btu/ft.2/ft./hr./°F at 68°F

                Electrical Conductivity:**                                           55% IACS at 68°F

                Thermal Capacity (Specific Heat):                              .092 Btu/lb. °F at 68°F

                Modulus of Elasticity - Tension:                                  18,000 ksi

                Modulus of Rigidity:                                                       6,000 ksi

 

**After aging treatment.

 

Mechanical Properties:

 

 

 

 

C19160

0.080" Dia. Wire

Tensile Strength

(psi)

Yield Strength

(0.5% Ext.) (psi)

% Elongation

(in 2")

Conductivity Min., % IACS

TF00 (Age Hardened)

65,000

40,000

25

---

TL01 (1/4 Hard)

78,500

68,000

12

---

TL02 (1/2 Hard)

86,000

70,000

7

---

TL04 (Hard)

95,000

75,000

5

---

TL08 (Spring)

107,000

98,000

3

---

C19140 & C19160 Rod

 

 

 

 

Heat Treated & Drawn

(Up to 3/8" Dia.)

85,000

75,000

5

55

As Heat Treated

(Over 3/8" Dia.)

60,000

50,000

8

55

 

 

ADS No. 19140 & 19160

Rev. No. 0

Rev. Date 9/5/97

C19140 C19160

 

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.