Tellurium Bearing

Material No. Unified Numbering System (UNS): C14500

Chemical Composition

Element Cu(1,2,3) P Te
Min (%) 0.004 0.4
Max (%) Rem 0.012 0.7
  • Cu value includes Te+P.
  • Includes oxygen-free or deoxidized grades with deoxidizers (such as phosphorus boron lithium or others in an amount agreed upon.
  • Cu value includes Ag.

Tellurium Bearing Alloy is called a "free machining alloy". This is an alloy that, when subjected to machining operations, consumes lower power, gives better surface finish, produces small metal chips, and results in longer tool life.

Common Fabrication Processes

  • Forging
  • Extruding
  • Drawing
  • Machining

Mechanical & Electrical Properties

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Form Tensile Strength In N/MM2 Elongation In % Rockwell B scale - HRB Conductivity% IACS at 20°C
Flat & Bar >262 >12 >42 ≥85
Rod >366 >10 >54 ≥85

Physical Properties

Melting Point – Liquidus °C 1080
Melting Point – Solidus °C 1051
Density lb/cu in. at 20°C 0.323
Specific Gravity 8.94
Electrical Conductivity% IACS at 20°C 85
Thermal Conductivity Btu/ sq ft/ ft hr/ °F at 20°C 205
Coefficient of Thermal Expansion 20 – 300 10-6 per °C (20 – 300°C) 9.7
Specific Heat Capacity Btu/ lb /°F at 20°C 0.092
Modulus of Elasticity in Tension ksi 17000
Modulus of Rigidity ksi 6400

Applicable Form & Size




Thick: 10 mm-50 mm

Width: 25 mm-150 mm

Length: 2 Mtr max


Dia: Ø10 mm-Ø145mm

Length: 2 Mtr max

Apart from above we can also manufacture as per customer specification.

Typical Applications


  • Resistance Welding Application
  • Electrical Connectors,


  • Fixtures for Plumbing fitting Manufacturer