Oxygen Free Low Phosphorus Copper – UNS C10800

Topics Covered

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

Introduction

The UNS numbers C10100 to C1300 represent commercially pure copper. The metal with which copper is alloyed determines the high electrical and thermal conductivity of the metal as well as its resistance to corrosion. The alloying metals also modify the electrical conductivity of copper. The behavior of various grades of unalloyed copper depends on the amount of impurities present in it.

The following data sheet discusses in detail about oxygen free low phosphorus copper UNS C10800.

Chemical Composition

The following table details the chemical composition of UNS C10800 oxygen free low phosphorus copper.

Element Content (%)
Cu 99.95
P 0.009

Physical Properties

The physical properties of UNS C10800 oxygen free low phosphorus copper are outlined in the table below.

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 C10800 oxygen free low phosphorus copper are displayed in the following table.

Properties Metric Imperial
Hardness, Rockwell B 10 10
Hardness, Rockwell F 60 60
Hardness, HR30T 25 25
Tensile strength, ultimate 250 MPa 36300 psi
Tensile strength, yield 195 MPa 28300 psi
Poissons ratio 0.307 0.307
Modulus of elasticity 115 GPa 16700 ks
Machinability 20% 20%
Shear modulus 44.0 GPa 6380 ks
Shear strength 170 MPa 24700 psi

Thermal Properties

The following table shows the thermal properties of UNS C10800 oxygen free low phosphorus copper.

Properties Metric Imperial
Specific heat capacity 0.385 J/g-°C 0.0920 BTU/lb-°F
Thermal conductivity 350 W/m-K 2430 BTU-in/hr-ft2-°F
Solidus 1083°C 1981°F
Liquidus 1083 °C 1981°F

Other Designations

The following table shows the equivalent materials to UNS C10800 oxygen free low phosphorus copper.

ASTM B111 ASTM B359 ASTM B543 ASTM B716
ASTM B133 ASTM B360 ASTM B638 ASTM B743
ASTM B152 ASTM B379 ASTM B640 ASTM B75
ASTM B224 ASTM B395 ASTM B641 ASTM B88
ASTM B280 ASTM B42 ASTM B68 MIL B-20292
ASTM B302 ASTM B432 ASTM B687 MIL T-24107
ASTM B306 ASTM B447 ASTM B698 UNS C10800

Fabrication and Heat Treatment

Annealing

The annealing temperature for UNS C10800 is between 371 and 648ºC (700 and 1200 ºF).

Cold Working

The UNS C10800 oxygen free low phosphorus copper has excellent cold working capacity.

Hot Working

The UNS C10800 alloys can be hot formed in an excellent method.

Welding

The following are the welding methods recommended for the UNS C10800 alloys:

  • Soldering – excellent
  • Brazing – excellent
  • Oxyacetylene welding – good
  • Gas shielded arc welding – excellent
  • Coated metal arc welding - not recommended
  • Spot welding - not recommended
  • Seam welding - not recommended
  • Butt welding - good

Forging

The UNS C10800 alloys are forged at temperature between 760 and 871ºC (1400 and 1600°F) at a hot forgeability rate of 65%.

Machinability

The machinability rating of UNSC10800 alloy is 20%.

Applications

The following are the applications of UNS C10800.

  • Electrical and electronic conductors
  • Wave guides
  • Cavity resonators
  • Superconductor matrixes
  • Vacuum tube and solid-state devices
  • Glass-to-metal seals

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