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EN 12420 CW105C

A European copper alloy forging standard for CuCr1 CW105C which is a high copper alloy containing a small amount of chromium. The addition of chromium strengthens by a precipitation hardening mechanism and is used when greater tensile strength and hardness is required whilst still retaining a high level of electrical and heat conductivity. The alloy also meets several additional world specifications EN 12167/12165 CW105C, MIL-C-19311, RMMA Class 11, BS 2872/2874 CC101, DIN 17666 W Nr 2.1291 and GOST 18175 BrH1.

Description	Copper Chrome
Nominal Composition	CuCr1
Alloy Type	Wrought

Typical Mechanical Properties

Tensile Strength (N/mm²)	450
Proof/Yield Strength (N/mm²)	350
Elongation (%)	20
Hardness Brinell	140
Impact Izod J20°C

Typical Physical Properties

Density g/cm³	8.9
Melting Temperature Range °C	950-1050
Thermal Conductivity W/mK	320
Electrical Resistivity μΩ.m15°C	0.022
Coefficient of Thermal Expansion 0-250°C
Relative Magnetic Permeability	<1.01
Coefficient of Friction

Copper Alloys Ltd has the ability to modify existing alloys for improved performance. Many customers have benefited from this in the past.

To discuss your requirements, call a member of Copper Alloys Ltd's technical team on +44 (0) 1782-816888, or email sales@copperalloys.net.

This Data is indicative only and must not be seen as a substitute for the full specification from which it is drawn. In particular, the mechanical property requirements vary widely with tempeter, product and product dimensions. The information is based on our present knowledge and is given in good faith. However, no liability will be acepted by the Company in respect of any action taken by any third party in reliance thereon.

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.

Any 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. Any contract between the Company and a customer will be subject to the Company's 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.