Performance Comparison between Enameled Aluminum Wire and Enameled Copper Wire

Performance Comparison: Chart One

Performance	Unit	Aluminum	Copper	Remarks
Tensile Strength	N/m㎡	120	260
Resistivity（20℃）	Ω.mm2/m	≤0.028264	≤0.017241
Temperature Resistance Coefficient	aR /℃-1	0.00429	0.00393	Pure Metal
Thermal Expansion Coefficient	Μm/m. ℃	23.8	16.6
Heat Transfer Coefficient	W/m.K	226	402
Melting Point	℃	660.4	1083	Pure Metal
Boiling Point	℃	2467	2567	Pure Metal
Density	g/mm³	2.703	8.92	Pure Metal

Performance Comparison: Chart Two

Performance	Enameled Aluminum Wire	Enameled Copper Wire
Direct Current Resistance（IACS）	100%	62%---65%
Breakdown Voltage	Good	Good
Film Continuity	Good	Good
Elongation	Excellent	Excellent
Resilience	Good	Excellent
Coiling	Good	Good
Degradation Resistance	Good	Excellent
Single Paint	Excellent	Good
Repeated Paint	Excellent	Bad

The Differences Impact on the Use: the Design of Electric Machinery

1,  The diameter selection of conductor

2,  Motor wire groove design

Reason: the contrast of resistance value

The Differences Impact on the Use :the Method of Paint Removing

1, The Paint Removing of Enameled Aluminum Wire in the Incoming Inspection Process

Special paint remover----class 130 and class 155 enameled aluminum wire

Concentrated sulfuric acid---all types of enameled aluminum wire

2, The Paint Removing of Enameled Aluminum Wire in the Incoming Inspection Process

Special paint remover----class 130 and class 155 enameled aluminum wire

Stripping salt---- all types of enameled aluminum wire

Mechanical stripping---large types of enameled aluminum wire

The Differences Impact on the Use: Attended Mode

The attended mode of enameled aluminum wire

1, Paint removing + Dedicated solder wire

2, Paint removing+ Special flux+ Ordinary solder

3, Terminal Connection

The Differences Impact on the Use :Winding

1, Because the tensile strength of aluminum wire is smaller than copper wire, the winding speed of aluminum wire is slower than copper wire.

2, At the same time, because of smaller tensile strength, winging tension of enameled aluminum wire will be smaller than copper wire.