LG4 - Copper Alloys

A British cast leaded gunmetal to BS1400 LG4 CuSn7Zn2Pb3, conforming to the European norm BS EN 1982-2008 CC492K. This alloy has a higher strength than CC490K and CC491K from the additional tin giving superior wear resistance.

Equivalent Specifications

BS 1400 LG4
BS EN 1982-2008 GC CC492K
CuSn7Zn2Pb3-C
NES 838
AS1565-1985 C92410
AS 1565-1974 924B
DIN 1705 2.1052.03

Key Features

A general bearing alloy working under low loads and for non critical uses.

Needs adequate lubrication but good embed ability.

Typical Uses

General bearing and bushing applications and pumps and valves.

Description	Leaded Gunmetal
Nominal Composition	CuSn7Pb3Zn3
Alloy Type	cast

Typical Mechanical Properties

Tensile Strength (N/mm²)	320
Proof/Yield Strength (N/mm²)	140
Elongation (%)	40
Hardness Brinell	85
Impact Izod J20°C

Typical Physical Properties

Density g/cm³	8.8
Melting Temperature Range °C	855 - 1000
Thermal Conductivity W/mK	61
Electrical Resistivity μΩ.m15°C	0.13
Coefficient of Thermal Expansion 0-250°C	18
Relative Magnetic Permeability	1.01
Coefficient of Friction

Copper Alloys 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’s technical team on +44 (0) 1782-816888, or email [email protected].

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 accepted 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.