California Fine Wire is a manufacturer of many types of Copper Wire. We supply the materials below in fine wire and ultra fine wire sizes.
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Copper Fine and Ultra Fine Wires

Beryllium (BE) Copper Alloy 10 CDA 175 Wire
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Copper Fine and Ultra Fine Wires

Beryllium (BE) Copper Alloy 25 CDA 172 Wire
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Copper Fine and Ultra Fine Wires

Brass Free-Cut CDA 360 wire
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Copper Fine and Ultra Fine Wires

Brass 7030 CDA 230 wire
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Copper Fine and Ultra Fine Wires

Brass Gilding CDA 210 wire
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Brands N/A California Fine Wire Co.
Specific Resistance N/A 22.800 Ohm·cm/ft N/A 46.200 Ohm·cm/ft N/A 39.900 Ohm·cm/ft N/A 37.000 Ohm·cm/ft N/A 18.500 Ohm·cm/ft
Specific Resistivity N/A 3.79 µOhm·cm²/cm N/A 7.68 µOhm·cm²/cm N/A 6.63 µOhm·cm²/cm N/A 6.15 µOhm·cm²/cm N/A 3.08 µOhm·cm²/cm
Commercial Resistance Tolerance (On Sizes below 0.020) N/A 3.00 %
Temperature Coefficient of Resistance (0 to 100 Degree Celsius (ºC) Temperature) N/A 0.0028 Ohm/Ohm/ºC N/A 0.0015 Ohm/Ohm/ºC N/A N/A 0.00148 Ohm/Ohm/ºC N/A 0.00231 Ohm/Ohm/ºC
Thermal Electromotive Force (EMF) Vs Copper N/A -0.014
Density N/A 8.61 g/cm³ N/A 8.25 g/cm³ N/A 8.5 g/cm³ N/A 8.53 g/cm³ N/A 8.86 g/cm³
Youngs Modulus N/A 19 x 106 psi N/A 18 x 106 psi N/A 14 x 106 psi N/A 16 x 106 psi N/A 17 x 106 psi
Specific Heat at 20 Degree Celsius (ºC) Temperature N/A 0.100 cal/g N/A 0.100 cal/g N/A 0.090 cal/g N/A 0.090 cal/g N/A 0.090 cal/g
Thermal Conductivity N/A 2.014000 W/cm/ºC N/A 1.069000 W/cm/ºC N/A 1.151000 W/cm/ºC N/A 1.192000 W/cm/ºC N/A 2.301000 W/cm/ºC
Coefficient of Linear Expansion N/A 17.6 x 10-6 in/in ºC N/A 17.6 x 10-6 in/in ºC N/A 20.5 x 10-6 in/in ºC N/A 19.9 x 10-6 in/in ºC N/A 18.1 x 10-6 in/in ºC
Melting Point N/A 1029.00 ºC N/A 865.00 ºC N/A 885.00 ºC N/A 915.00 ºC N/A 1050.00 ºC
Industry Standards N/A American Society for Testing and Materials (ASTM) B-197 American Society for Testing and Materials (ASTM) B-534 N/A American Society for Testing and Materials (ASTM) B-197 N/A N/A American Society for Testing and Materials (ASTM) B-134 N/A American Society for Testing and Materials (ASTM) B-134
Federal Specifications Standards and Test N/A N/A N/A N/A QQ-W-321 N/A QQ-W-321
Wire N/A
Ribbon N/A
Square N/A
Insulated N/A
Plated N/A
Element N/A Beryllium (Be) Cobalt (Co) Copper (Cu) N/A Beryllium (Be) Copper (Cu) N/A Copper (Cu) Lead (Pb) Zinc (Zn) N/A Copper (Cu) Zinc (Zn) N/A Copper (Cu) Zinc (Zn)
Second Element N/A Beryllium (Be) Cobalt (Co) Copper (Cu) N/A Beryllium (Be) Copper (Cu) N/A Copper (Cu) Lead (Pb) Zinc (Zn) N/A Copper (Cu) Zinc (Zn) N/A Copper (Cu) Zinc (Zn)
Nominal Beryllium (Be) Composition N/A 0.5500 % N/A 1.8000 % N/A N/A N/A
Nominal Cobalt (Co) Composition N/A 2.5500 % N/A N/A N/A N/A
Nominal Cadmium (Cd) Composition N/A
Maximum Cadmium (Cd) Composition N/A
Maximum Chromium (Cr) Composition N/A
Minimum Copper (Cu) Composition N/A
Nominal Copper (Cu) Composition N/A 96.9000 % N/A 98.1000 % N/A 61.5000 % N/A 70.0000 % N/A 95.0000 %
Maximum Copper (Cu) Composition N/A
Maximum Iron (Fe) Composition N/A
Maximum Nickel (Ni) Composition N/A
Nominal Nickel (Ni) Composition N/A
Maximum (P) Composition N/A
Maximum Lead (Pb) Composition N/A N/A N/A 3.1000 % N/A N/A
Maximum Tin (Sn) Composition N/A
Maximum Zinc (Zn) Composition N/A N/A N/A 35.4000 % N/A 30.0000 % N/A
Maximum Zirconium (Zr) Composition N/A N/A N/A N/A N/A 5.0000 %
Hard Ultimate Tensile Strength (UTS) N/A 130000 psi N/A 150000 psi N/A N/A 110000 psi N/A 65000 psi
Annealed Ultimate Tensile Strength (UTS) N/A 35000 psi N/A 68000 psi N/A N/A 54000 psi N/A 35000 psi
Hard Yield Tensile Strength (YTS) N/A 110000 psi N/A 125000 psi N/A N/A 70000 psi N/A 58000 psi
Annealed Yield Tensile Strength (YTS) N/A 20000 psi N/A 28000 psi N/A N/A 40000 psi N/A 11000 psi
Note N/A All values may vary dependent on specific design and usage.
Magnetic N/A
Operating Temperature N/A