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Higher Stress Relaxation Resistance Copper Alloy CAC™ 5

CDA No. 19040

Good Points

Is the copper alloy which optimized the characteristic for terminals with a wire barrel.
Has excellent stress relaxation resistance and is suitable for the automotive application.
Is the copper alloy based on JASO-C400 class.
Has good strength and equipment of phosphorous bronze (C5210) or brass (C2600).
Has the lineup with some pre-tin plating products. Has the plating types of New Tin Reflow and normal tin reflow.

Nominal Compositions

Cu-0.8Ni-1.2Sn-0.07P (mass%)

Characteristics

1. Physical Properties

Specific Gravity	8.9
Coefficient of Thermal Expansion (293～573K)	17.7 x 10^-6/K Thermal
Conductivity (293K)	166 W/m.K
Electrical Resistivity (293K)	43.1 nΩ.m
Electrical Conductivity (293K)	40 %IACS
Modulus Elasticity (293K)	130 GPa

* The above are typical characteristics.

2. Mechanical Properties

Temper	Tensile Strength MPa	Yield Strength MPa	Elongation %	Vickers Hardness MHv: 4.9N
H/SP	500～590	530	7 min	155～185
EH/SP	540～630	570	5 min	165～200

Temper

Tensile Strength
MPa

Yield Strength
MPa

Elongation

Vickers Hardness
MHv: 4.9N

H/SP

500～590

530

7 min

155～185

EH/SP

540～630

570

5 min

165～200

* Yield strength are nominal values.

* The above tensile strength and hardness are our standard specifications.
We will adjust these specifications by your requests.

3. 90°W-type Bend-formability (MBR)

Temper	Good Way	Bad Way
H/SP	0	0
EH/SP	0.2	0.2

* The above are typical characteristics.
The value slightly varies depending on the thickness of specimens.

Use

Terminals and connectors for Automotive wire harness, Terminals and connectors for Consumers, Leadframe for mini-mold type transistor etc.

Others

Not used cadmium (Cd), lead (Pb), mercury (Hg), six value chrome (Cr⁺⁶), polybrominated biphenyl (PBB), Polybrominated biphenyl ether (PBDE) restricted with RoHS etc.

Kobe Steel, Ltd. Advanced Materials Business

Copper Rolled Products Unit

Copper Flat Rolled Products Sales Department

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