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C14500

Stocked alloy specs

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Reference guide

Stocked size schedules

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✔ Standard-stocked product

Extruded and drawn

C14500, or tellurium copper, has similar Mechanical properties to unalloyed, pure copper but with a higher machinability. The cutting properties of C14500 are enhanced significantly by creating a copper alloy with the addition of tellurium. Tellurium copper is also known for its high electrical conductivity characteristic.

C14500 spec sheet C14500 size schedule Weight calculator Standard products

C14500

Product description: Tellurium copper
Tempers: H02 half hard, H04 hard
Solids: 3/8" to 2 3/4" O.D.*
Standard lengths: 144"

 *Consult mill for other sizes

Typical uses

Architecture: Fire protection
Electrical: Electrical connectors, motor parts, soldering copper, switch parts, transistor bases
Industrial: Forgings, furnace brazed articles, screw machine products, soldering tips, welding torch tips
Plumbing: Fixtures, plumbing fittings, sprinkler heads

Similar or equivalent specification

CDA ASTM SAE AMS Federal Military Other
C14500 B124
B124M
B301
B301M		 J461
J463		       Tellurium-bearing (PTE)

Chemical composition

Cu%1,2 P% Te%
Chemical composition according to ASTM B301/B301M-13(2020)

1Includes silver   2Includes tellurium and phosphorus
Note: includes oxygen-free or deoxidized grades with deoxidizers (such as phosphorus, boron, lithium, or other) in an amount agreed upon. Unless otherwise noted, single values represent maximums.
99.90
min		 0.004-
0.012		 0.40-
0.70

Machinability

Copper alloy UNS no. Machinability rating Density (lb/in3 at 68 °F)
C14500 85 0.323

Mechanical properties

Mechanical properties according to ASTM B301/B301M-13(2020)

C14500

H02 half hard

Size range: 1/16" diameter rod to 1/4" inclusive
Tensile strength, min Yield strength, at 0.5% extension under load, min Elongation, 4x diameter or specimen thickness, min Brinell hardness (500 kg load) Remarks
Ksi MPa Ksi MPa % typical BHN  
38 260 30 205 8 76  
Size range: over 1/4" diameter rod to 2 5/8" inclusive
Tensile strength, min Yield strength, at 0.5% extension under load, min Elongation, 4x diameter or specimen thickness, min Brinell hardness (500 kg load) Remarks
Ksi MPa Ksi MPa % typical BHN  
38 260 30 205 12 76  

C14500

H04 hard

Size range: 1/16" diameter rod (round only) to 1/4" inclusive
Tensile strength, min Yield strength, at 0.5% extension under load, min Elongation, 4x diameter or specimen thickness, min Brinell hardness (500 kg load) Remarks
Ksi MPa Ksi MPa % typical BHN  
48 330 40 275 4 81  
Size range: over 1/4" diameter rod (round only) to 1 1/4" inclusive
Tensile strength, min Yield strength, at 0.5% extension under load, min Elongation, 4x diameter or specimen thickness, min Brinell hardness (500 kg load) Remarks
Ksi MPa Ksi MPa % typical BHN  
44 305 38 260 8 81  
Size range: over 1 1/4" diameter rod (round only) to 3" inclusive
Tensile strength, min Yield strength, at 0.5% extension under load, min Elongation, 4x diameter or specimen thickness, min Brinell hardness (500 kg load) Remarks
Ksi MPa Ksi MPa % typical BHN  
40 275 35 240 8 81  

Physical properties

Physical properties provided by CDA
  US Customary Metric
Melting point - liquidus 1976 °F 1080 °C
Melting point - solidus 1924 °F 1051 °C
Density 0.323 lb/in3 at 68 °F 8.94 gm/cm3 at 20 °C
Specific gravity 8.94 8.94
Electrical conductivity 93% IACS at 68 °F 0.539 MegaSiemens/cm at 20 °C
Thermal conductivity 205 Btu/sq ft/ft hr/°F at 68 °F 355 W/m at 20 °C
Coefficient of thermal expansion 68-212 9.5 · 10-6 per °F (68-212 °F) 16.5 · 10-6 per °C (20-100 °C)
Coefficient of thermal expansion 68-392 9.7 · 10-6 per °F (68-392 °F) 16.8 · 10-6 per °C (20-200 °C)
Coefficient of thermal expansion 68-572 9.9 · 10-6 per °F (68-572 °F) 17.1 · 10-6 per °C (20-300 °C)
Specific heat capacity 0.092 Btu/lb/°F at 68 °F 385.5 J/kg at 20 °C
Modulus of elasticity in tension 17000 ksi 117212 MPa
Modulus of rigidity 6400 ksi 44127 MPa

Fabrication properties

Fabrication properties provided by CDA
Technique Suitability
Soldering Excellent
Brazing Good
Oxyacetylene welding Fair
Gas shielded arc welding Fair
Coated metal arc welding Not recommended
Spot weld Not recommended
Seam weld Not recommended
Butt weld Fair
Capacity for being cold worked Good
Capacity for being hot formed Good
Forgeability rating 65
Machinability rating 85

Thermal properties

Thermal properties provided by CDA
*Temperature is measured in Fahrenheit.
Treatment Minimum* Maximum*
Annealing 800 1200
Hot treatment 1400 1600

Common fabrication processes

Cold - drawing, machining, moderate cold heading; Hot - extrusion, forging (closed die only)

Common fabrication processes provided by CDA

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