CAC92 CDA No. 72500

CAC92 is a copper alloy containing a solid solution of Ni and Sn which was originally developed in USA and modified by Kobe Steel for commercial production. It has excellent corrosion resistance and solderability and strength equivalent to phosphor bronze, showing high cost performance.

Features

1.        Excellent solderability.

2.        High elastic modulus.

3.        Good platability with various type of plating.

4.        Good resistance to stress relaxation.

5.        No stress corrosion cracking.

Chemical Composition

       Cu: Residual, Ni: 8.5-10.5, Si: 1.8-2.8

Physical Properties

Specific

Gravity

Thermal Expansion Coefficient

(293-725K)

Thermal Conductivity

(293K)

Volume Resistivity

(293K)

Electrical Conductivity

Longitudinal Elasticity Coefficient

8.9 g/cm3

16.6x10-6/K

0.46x102 W/mK

15.7 uohm.cm

11% IACS

1.24x105 N/mm2

Mechanical Properties

Temper

Grade

Tensile Strength

(N/mm2)

Elongation

(%)

Vickers Hardness

(For reference)

Spring Limit

(N/mm2)

(For reference)

O

max 420

min 30

max 120

-

1/4H

345-445

min 20

85-135

-

1/2H

410-515

min 10

115-160

min 215

H

465-570

min 9

140-180

min 295

EH

515-620

min 8

160-190

min 365

SH

550-650

min 7

170-200

min 410

ESH

600-700

min 5

185-210

min 530

Product Range (Unit: mm)

Shape

Thickness

Width

Length

Unit Weight

(kg/1mm width)

Plate

0.1-5.0

max 520

max 1600

-

Strip

0.1-1.0

6-520

-

4

Note: (1) The spool diameter range from 150 mm to 500 mm in increments of 50mm.

        (2) The coil spool is also available in resin and steel.

        (3) Strip with Tin plating is also available, however, only in width less than 300 mm.

        

Uses

       IC leadframes, terminals, connectors, bus-bars, various electrical components.

 

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