Oxygen Free Silver-Bearing Copper – UNS C10400

Topics Covered

Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Other Designations
Fabrication and Heat Treatment
Machinability
Welding
Forging
Hot Working
Cold Working
Annealing
Applications

Introduction

Unalloyed copper or oxygen free coppers are provided with high thermal and electrical properties and good corrosion resistance. Based on the amount of impurities present in the metal, the properties and grades of unalloyed coppers vary. The commercially available pure coppers are designated as C10100 to C13000. These oxygen free coppers are best suited for applications, which require good ductility and high conductivity performance.

The following datasheet will give an outline of UNS C10400 oxygen free silver-bearing copper.

Chemical Composition

The following table shows the chemical composition of UNS C10400 copper.

Element Content (%)
Cu, Copper 99.95
Ag, Silver 0.025

Physical Properties

The physical properties of UNS C10400 copper are given in the following table.

Properties Metric Imperial
Density 8.94 g/cm3 0.323 lb/in3
Melting point 1083°C 1981°F

Mechanical Properties

The mechanical properties of UNS C10400 copper are tabulated below.

Properties Metric Imperial
Tensile strength, ultimate 221 - 455 MPa 32100 - 66000 psi
Tensile strength, yield (depending on temper) 69.0 - 365 MPa 10000 - 52900 psi
Elongation at break (in 101.6 mm[4 in.]) 55.00% 55.00%
Modulus of elasticity 115 GPa 16700 ksi
Poissons ratio (calculated) 0.300 0.300
Machinability (UNS C36000 (free-cutting brass) = 100%) 20% 20%
Shear modulus 44.0 GPa 6380 ksi

Other Designations

The designations that are equivalent to UNS C10400 copper are outlined in the following table.

ASME SB152 ASTM B188 ASTM B3
ASTM B1 ASTM B189 ASTM B355
ASTM B133 ASTM B2 ASTM B49
ASTM B152 ASTM B224 ASTM B506
ASTM B187 ASTM B246 MIL B-20292

Fabrication and Heat Treatment

Machinability

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The machinability rate of UNS C10400 copper is 20%.

Welding

Welding procedures such as soldering, brazing, gas shielded arc welding, oxyacetylene welding and butt welding are recommended for UNS C10400 copper. Other welding methods such as coated metal arc welding, spot welding and seam welding are not preferred.

Forging

UNS C10400 copper is forged at hot working temperatures ranging from 760 to 871°C (1400 to 1600°F). The hot forgeability rate of this metal is 65%.

Hot Working

UNS C10400 copper has excellent hot working property.

Cold Working

UNS C10400 copper has excellent cold working property.

Annealing

Annealing of C10400 copper is performed at temperatures ranging from 482 to 760°C (700 to 1200°F).

Applications

UNS C10400 copper is suitable for electrical conductors that are operated at high temperatures.

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