C10700 Oxygen Free Copper With Silver (OFE)

The following data is provided for informational purposes only. It was provided with permission by the Copper Development Association at www.copper.org.

Last Update: Feb 21, 2005

Chemical Composition (%max., unless shown as range or min.)

Cu(1X2) O Ag
Min./Max. 99.99 min .0010 .085
Nominal

1) Cu is determined by the difference between the impurity total and 100%.
(2) Cu value includes Ag.
(3) In troy ounce: Min = 25, Max = 0 and Nom = 0
Note: This is a high conductivity copper which has, in the annealed condition a minimum conductivity of 100% IACS except for Alloy C10100 which has a minimum conductivity of 101% IACS.

Applicable Specifications

Product Specification
Bands, Projectile Rotating MILITARY MIL-B-20292
Bar ASME SB152
ASTM B152
Bar, Bus ASTM B187
Brazing Filler Metal FEDERAL QQ-B-650
Pipe, Bus ASTM B188
Plate ASME SB152
ASTM B152
Rod, Bus ASTM B187
Shapes, Bus ASTM B187
MILITARY MIL-B-19231
Sheet ASME SB152
ASTM B152
Sheet, Clad ASTM B506
Strip ASME SB152
ASTM B152
Strip, Clad ASTM B506
Tube, Bus ASTM B188
Wire, Medium-Hard Drawn ASTM B2
FEDERAL QQ-W-343
Wire, Coated With Lead Alloy ASTM B189
Wire, Coated With Nickel ASTM B355
Wire, Coated With Silver ASTM B298
Wire, Coated With Tin ASTM B246
Wire, Flat ASTM B272
Wire, Hard Drawn ASTM B1
FEDERAL QQ-W-343
Wire, Soft ASTM B3
FEDERAL QQ-W-343

Common Fabrication Processes
Blanking, Coining, Coppersmithing, Drawing, Etching, Forming and Bending, Heading and Upsetting, Hot Forging and Pressing, Piercing and Punching, Roll Threading and Knurling, Shearing, Spinning, Squeezing and Swaging, Stamping

Fabrication Properties

Joining Technique Suitability
Soldering Excellent
Brazing Excellent
Oxyacetylene Welding Fair
Gas Shielded Arc Welding Good
Coated Metal Arc Welding Not Recommended
Spot Weld Not Recommended
Seam Weld Not Recommended
Butt Weld Good
Capacity for Being Cold Worked Excellent
Capacity for Being Hot Formed Excellent
Forgeability Rating 65
Machinability Rating 20

Physical Properties

US Customary Metric
Melting Point – Liquidus 1981 F 1083 C
Melting Point – Solidus 1981 F 1083 C
Density 0.323 lb/in3 at 68 F 8.94 gm/cm3 @ 20 C
Specific Gravity 8.94 8.94
Electrical Resistivity 10.3 ohms–cmil/ft @ 68 F 1.73 microhm–cm @ 20 C
Electrical Conductivity* 101% IACS @ 68 F 0.585 MegaSiemens/cm @ 20 C
Thermal Conductivity 224.0 Btu · ft/(hr · ft2·oF)at 68F 387.7 W/m · oK at 20 C
Coefficient of Thermal Expansion 9.4 ·10–6 per oF (68–212 F) 16.9 ·10–6 per oC (20–100 C)
Coefficient of Thermal Expansion 9.6 ·10–6 per oF (68–392 F) 17.3 ·10–6 per oC (20–200 C)
Coefficient of Thermal Expansion 9.8 ·10–6 per oF (68–572 F) 17.6 ·10–6 per oC (20–300 C)
Specific Heat Capacity 0.092 Btu/lb/oF at 68 F 393.5 J/kg · oK at 293 K
Modulas of Elasticity in Tension 17000 ksi 117000 MPa
Modulus of Rigidity 6400 ksi 44130 MPa

*Volume and weight basis, minimum value.

Tempers Most Commonly Used

Flat Products
BAR, DRAWN H01, H04, H06, O60
BAR, ROLLED H01, H04, H06, M20, O60
PLATE H00, M20
SHEET H00, H02, M20, O60
STRIP, DRAWN H04, O60
STRIP, ROLLED H00, H01, H02, H04, H08, H10, M20, O60
WIRE, DRAWN H04, H06, O60
WIRE, ROLLED H04, O60

Other
ROD H04, M20
SHAPES H04, M20, M30, O60
WIRE H00, H01, H04, H08, O60

Typical Uses
Automotive
Gaskets, Radiators

Electrical
Conductors, Transistor Bases, Commutator Segments, Busbars, Contacts, Windings, Switches, Printed Circuit Foil, Radio Parts, Conductivity Wire, Terminal Connectors

Industrial
Heat Exchangers, Chemical Process Equipment, Printing Rolls, Applications Requiring Brazing in Hydrogen Atmosphere, Clad Metals