Brass Copper Castings India
Oxygen-Free Copper C10100 Bar & Plate

Copper No. C10100
Oxygen Free High Conductivity Copper
UNS CDA 101 , ASTM B 187 , ASTM B 152
Nominal Chemical Composition % by weight
Copper Residual Deoxidants Phosphorus Tellurium
99.99 - .0003 max .0010 max

Material Properties

High thermal and electrical conductivity and high ductility combined with low volatility makes this material indispensable in the electronics industry.


Some typical uses for Copper Alloy 10100 in the electrical and electronic industries are bus bars, bus conductors, wave guides, hollow conductors, lead-in wires and anodes for vacuum tubes, glass to metal seals and others.

Mechanical Properties 

Typical for 1" solid diameter Hard (35%) Temper

Hardness* Rockwell F Scales 87
Tensile Strength** KSI 48
Yield Strength** KSI 44
Elongation** % in 2 inch 16

*Hardness conversions are approximate

**Test values are nominal approximations and depend on specimen size and orientation.

Physical Properties

Thermal Conductivity BTU/ (sq ft-ft-hr-F) 226
Specific Heat BTU/lb/ºF @ 68F .092
Thermal Expansion Per °F from 68 F to 212 F .0000094
Density lb/cu in @ 68 F .323
Electrical Conductivity % IACS @ 68 F 101
Modulus of Elasticity KSI 17,000

Fabrication Properties

Capacity for being cold worked Excellent
Capacity for being hot formed Excellent
Hot forgeability rating (forging brass=100) 65
Hot working temperature 1400-1600 F or 750-875 C
Annealing temperature 700-1200 F or 375-650 C
Machinability rating (Free Cutting Brass=100) 20
Suitability for being joined by: Soldering/Excellent
Oxyacetylene Welding/Not Recommended
Gas Shielded Arc Welding/Fair
Coated Metal Arc Welding/Not Recommended
Resistance Welding Spot/Not Recommended
Seam/Not Recommended