C11000 Electrolytic Tough Pitch (ETP)

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Overview

Copper is the standard metal used for electrical conductors. Copper has extremely high electrical conductivity, surpassed only by pure silver and it has excellent tensile, solderability and corrosion characteristics.

C102 is an oxygen free (OF) copper that has better drawing and resistance to hydrogen embrittlement than C110 (ETP). OF copper contains less dissolved oxygen than ETP, which gives OF its performance advantage. In most applications, ETP is an acceptable conductor material and is more economical than OF copper.

Both OF and ETP copper conductors are available bare or plated with silver, nickel or tin.

Physical Properties

Annealing Range (Min) 700 °F
Annealing Range (Max) 1200 °F
Density 0.322 lb/in³
Electrical Resistivity (Annealed) 10.3 Ω·cir-mil/ft @ 68 °F
Electrical Conductivity (Annealed) 101% IACS @ 68 °F
Thermal Conductivity 226 Btu/ft²/ft·hr/°F @ 68 °F
Coefficient of Thermal Expansion 9.8 per °F (68-572 °F)
Modulus of Elasticity (Tension) 17 ksi
Modulus of Rigidity (Tension) 6 ksi
Melting Point (Solidus) 1,700 °F
Melting Point (Liquidus) 1,900 °F
Annealing Range (Min) 371 °C
Annealing Range (Max) 649 °C
Density 8.94 gm/cm³
Electrical Resistivity (Annealed) 1.71 µΩ·cm @ 20 °C
Electrical Conductivity (Annealed) 0.59 MS·cm @ 20 °C
Thermal Conductivity 391 W/m·K @ 20 °C
Coefficient of Thermal Expansion 17.6 per °C (20-300 °C)
Modulus of Elasticity (Tension) 117 Mpa
Modulus of Rigidity (Tension) 44 Mpa
Melting Point (Solidus) 927 °C
Melting Point (Liquidus) 1,038 °C

Round Wire

TEMPER NAME TEMPER CODE TENSILE
STRENGTH (ksi)
Typical
MILL LIMITS
(inch)
Annealed OS050 35.0 .0010 - .1285 inch
Hard Drawn H04 60.0
TEMPER NAME TEMPER CODE TENSILE
STRENGTH (Mpa)
Typical
MILL LIMITS
(mm)
Annealed OS050 240 .0254 - 3.264 mm
Hard Drawn H04 410

Square Wire

TEMPER NAME TEMPER CODE TENSILE
STRENGTH (ksi)
Typical
MILL LIMITS
(inch)
Annealed OS050 35.0 .0100 - .0808 inch 
Hard Drawn H04 60.0
TEMPER NAME TEMPER CODE TENSILE
STRENGTH (Mpa)
Typical
MILL LIMITS
(mm)
Annealed OS050 240 .2540 - 1.905 mm
Hard Drawn H04 410

Rolled Flat

TEMPER NAME TEMPER CODE TENSILE
STRENGTH (ksi)
MILL LIMITS
(inch)
Min Max
Annealed OS050 26.0 38.0 Thickness:
.0100 - .0500 inch

Width:
.0150 - .2500 inch
1/4 Hard H01 34.0 42.0
1/2 Hard H02 37.0 46.0
Hard H04 43.0 52.0
Spring H08 50.0 58.0
TEMPER NAME TEMPER CODE TENSILE
STRENGTH (Mpa)
MILL LIMITS
(mm)
Min Max
Annealed OS050 170 270 Thickness:
.2540 - 1.905 mm

Width:
.3810 - 6.350 mm
1/4 Hard H01 230 290
1/2 Hard H02 250 320
Hard H04 290 360
Spring H08 340 400

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