Copper (Pure)CW114C (C111) Bar

A free machining sulphur copper with a machinability rating of approximately 80%.

The addition of sulphur to the copper creates Cu2S copper sulphide within the microstructure that acts as a chip breaker and forms the basis of the free machining capacity.

The free cutting properties of sulphur copper combined with its high retention of electrical and thermal conductivity values (usually only associated with purer coppers) enables its use in a wide variety of applications.

CW114C can also be machined at much higher speeds with lower tool wear, giving machinists and designers a more cost effective product.

Sulphur copper is de-oxidised during its manufacture by adding phosphorus, and as a result the material offers a freedom from hydrogen embrittlement. Other benefits of CW114C are high corrosion resistance, a very good formability and can be joined easily by soldering.

Range

Product Form	Size Range
Round Bar (Hard)	¹⁄₂" - 1"

If you do not see what you are looking for, please contact your local service centre with your specific requirements.

Related Specifications

BS2874 C111
C14700
BS EN12164 CW114C
CuSP

Properties

Chemical Composition

Chemical Element	% Present
Sulphur (S)	0.20 - 0.70
Copper (Cu)	Balance

Mechanical Property	Value
Tensile Strength	250-360 N/mm²
Elongation A	7-2 %
Hardness Vickers	65-130 HV

Physical Property	Value
Density	8.94 g/cm³
Thermal Conductivity	347 W/m.K
Melting Point	1079 °C

Applications

Gas valve nozzles
Cable glands & fasteners
Circuit breaker terminals
Electrical contacts
Clamps

Characteristics

Excellent electrical conductivity
Retains high levels of thermal conductivity
Free machinability
Freedom from hydrogen embrittlement
Very good thermal conductivity
High corrosion resistance
Cost effective material since it can be machined at very high speeds without excessive tooling wear
Higher machining speeds when compared with pure copper (up to 4 times quicker)

Additional Information

Welding

Process	Rating
Oxy-acetylene welding	Not Recommended
Gas-shielded arc welding	Not Recommended
Soldering	Excellent
Brazing	Good
Resistance Welding	Not Recommended

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Disclaimer

This Data is indicative only and as such is not to be relied upon in place of the full specification. In particular, mechanical property requirements vary widely with temper, product and product dimensions. All information is based on our present knowledge and is given in good faith. No liability will be accepted by the Company in respect of any action taken by any third party in reliance thereon. Please note that the 'Datasheet Update' date shown above is no guarantee of accuracy or whether the datasheet is up to date.

The information provided in this datasheet has been drawn from various recognised sources, including EN Standards, recognised industry references (printed S online) and manufacturers' data. No guarantee is given that the information is from the latest issue of those sources or about the accuracy of those sources. Material supplied by the Company may vary significantly from this data but will conform to all relevant and applicable standards. As the products detailed may be used for a wide variety of purposes and as the Company has no control over their use; the Company specifically excludes all conditions or warranties expressed or implied by statute or otherwise as to dimensions, properties and/or fitness for any particular purpose, whether expressed or implied. Advice given by the Company to any third party is given for that party's assistance only and without liability on the part of the Company. All transactions are subject to the Company's current Conditions of Sale. The extent of the Company's liabilities to any customer is clearly set out in those Conditions; a copy of which is available on request.