Copper Alloys - Electrolytic Tough Pitch - Austral Wright Metals

Product Data Sheet    Copper Alloys

Electrolytic Tough Pitch Copper (ETP Copper) Alloy 110   UNS-C1100

Chemical Composition

AS2738.2-1984

Copper 99.90+%, oxygen by agreement, usually 0.04%

Equivalent Alloy Specifications

Specification UNS BSI JIS ISO
Designation

C11000

C101

C 1100

Cu-ETP

Australian Product Specifications

Specification Product Form

AS1566

Rolled flat products

AS1567

Wrought rods, bars & sections

AS1568

Forging stock & forgings

AS1569

Seamless tubes for heat exchangers

AS1571

Seamless tubes for air conditioning & refrigeration

AS1572

Seamless tubes for engineering purposes

Other product specifications available on enquiry

ASTM Product Specifications

Number Title
B5

High Conductivity Tough Pitch Copper Refinery Shapes

B124

Copper and Copper Alloy Forging Rod, Bar and Shapes

B152

Copper Sheet, Strip, Plate, and Rolled Bar

B187

Copper Bar, Bus Bar, Rod and Shapes

B188

Seamless Copper Bus Pipe and Tube

B283

Copper and Copper Alloy Die Forgings (Hot Pressed)

B447

Welded Copper Tube

B577

Detection of cuprous Oxide (Hydrogen Embrittlement Susceptibility) in copper

B694

Copper, Copper Alloy and Copper Clad Stainless Steel (CCS) and Copper Clad Alloy Steel (CAS) and Strip for Electrical Cable Shielding

Mechanical Properties

AS1566, Sheet & Strip

Property Units Temper
Annealed* (soft) Half Hard Hard
Tensile Strength (min) MPa

210*

245

310

Elongation (min) %

40*

10

7

Hardness HV

55 max*

75-90

90-115

1. Properties marked * are typical, for information only
2. Other tempers are available for sufficient quantity on request

 

 

Finish Annealed or cold rolled to temper.

Availablilty Austral Wright Metals can supply this alloy in sheet, strip, coil, plate, circles, bar, sections, wire.

General Description Electrolytic tough pitch (ETP) copper, alloy 110, has excellent ductility and high electrical and thermal conductivity, higher than for any other copper metal except oxygen free grades such as C10200. The electrical conductivity is at least 100% IACS (0.5800 microhm?¹.cm?¹) and is often as high as 101.5% IACS. Electrical and heat exchanger uses are common.

The dominant use of this alloy is in electrical conductors. It is also used widely for gaskets, switches, terminals and connectors, transformers, electronic parts, ball floats, drawn and spun holloware.

Physical Properties

Property Metric Units Imperial Units

Melting Point (Liquidus)

1083°C

1981°F

Melting Point (Solidus, eutectic)

1065°C

1950°F

Density

8.89 gm/cm³ @ 20°C

0.301 lb/in³ @ 68°F

Specific Gravity

8.89

8.89

Coefficient of Thermal Expansion

17.7 x 10 -6 / °K (20-300°C)

9.8 x 10 -5 / °F (68-572°F)

Themal Conductivity

388 W/m. °K @ 20°C

224 BTU/ft³/ft/hr/°F @ 68°F

Thermal Capacity (Specific Heat)

385 J/kg. °K @ 20°C

0.092 BTU/lb/°F @ 68°F

Electrical Resistivity (Annealed)

1.724 microhm.cm @ 20°C

10.3 ohms (circ mil/ft) @ 68°F

Electrical Conductivity (Annealed)

0.58 – 0.59 microhm.cm @ 20°C

100.0-101.5% IACS@ 68°F

Modulus of Elasticity (tension)

115 GPa

17 x 106 psi

Modulus of Rigidity (shear)

44 GPa

6.4 x 106 psi

Poisson’s Ratio

0.33

0.33

Fabrication Properties

Cold Working Capacity

Excellent

Hot Working Capacity

Excellent

Hot Forging Rating

65% of forging brass

Hot Working Temperature

750-875°C

Annealing Temperature

375-650°C

Machinability Rating

20% of free cutting brass

Finishing

Excellent

Joining Properties

Soldering

Excellent

Brazing

Good

Oxy-Acetylene Welding

Not Recommended

Carbon Arc Welding

Fair

Gas Shielded Arc Welding (GTAW/TIG, GMAW/MIG)

Fair

Coated Metal Arc Welding (Manual electrodes)

Not Recommended

Resistance Welding

Not Recommended

Corrosion Resistance

C11000 has excellent corrosion resistance to weathering and very good resistance to many chemicals. It is often used specifically for corrosion resistance. It is suitable for use with most waters, and can be used underground because it resists soil corrosion. It resists non-oxidising mineral and organic acids, caustic solutions and saline solutions.
Depending on concentration and specific conditions of exposure, copper generally resists:

Acids mineral acids such as hydrochloric and sulphuric acids; organic acids such as acetic acid (including acetates and vinegar), carbolic, citric, formic, oxalic, tartaric and fatty acids; acidic solutions containing sulphur, such as the sulphurous acid and sulphite solutions used in pulp mills.

Alkalies fused sodium and potassium hydroxide; concentrated and dilute caustic solutions.

Salt solutions aluminium chloride, aluminium sulphate, calcium chloride, copper sulphate, sodium carbonate, sodium nitrate, sodium sulphate, zinc sulphate.

Waters all potable waters, many industrial and mine waters, seawater and brackish water.

Other media The corrosion resistance of C11000 is not adequate for: ammonia, amines and ammonium salts; oxidizing acids such as chromic and nitric acids and their salts; ferric chloride; persulphates and perchlorates; mercury and mercury salts. Copper may also corrode in aerated non oxidising acids such as sulphuric and acetic acids, although it is practically immune from these acids if air is completely excluded. Copper is not suitable for use with acetylene, which can react to form an acetylide which is explosive. C11000 is considered to be immune to stress corrosion cracking in ammonia and the similar media which cause season cracking in brass and other copper alloys.

Consult Austral Wright Metals for your specific application.

Welding

C11000 contains about 0.04% oxygen, as cuprous oxide. This intentional residue reduces the adverse effect on electrical conductivity of traces of impurity metals. The internal oxide renders the alloy subject to hydrogen embrittlement if heated in reducing atmospheres above about 370°C (dull red heat). C11000 is therefore unsuitable for gas welding and high temperature brazing. Oxygen free copper, C10200, or the deoxidised alloy C12200 is preferred where welding is required.

Effect of cold work on Mechanical Properties

Copper in the annealed condition is among the most ductile of the engineering metals. Cold work, either cold rolling or deformation in fabrication, leads to rapid work hardening. The tempered grades of copper are produced by cold work, and the commercially pure coppers cannot be hardened by heat treatment.

Copper Alloys C11000 ETP Strength Copper Alloys C11000 ETP Elongation

Change of mechanical properties with cold reduction by rolling.

 

The technical advice and recommendations made in this Product Data Sheet should not be relied or acted upon without conducting your own further investigations, including corrosion exposure tests where needed. Please consult current editions of standards for design properties. Austral Wright Metals assumes no liability in connection with the information in this Product Data Sheet. Austral Wright Metals supplies a comprehensive range of stainless steels, copper alloys, nickel alloys and other high performance metals for challenging service conditions. Our engineers and metallurgists will be pleased to provide further data and applications advice.

 

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