LG1 / CC490K

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CC490K / LG1 is a leaded gunmetal a reasonable strength and good corrosion resistance in domestic water systems even at elevated temperatures. It also offers an excellent machinability rating and good wear resistance properties.

The CC490 / LG1 material can be used in environments up to 200?C and can be offered in thinner walled sections.

Related Standards

LG1

CC490K

C84400

CuSn3Pb5Zn8

2.1098

 

Chemical Composition (nominal)

Copper                            

81.0%

Tin                        

3.0%

Lead                      

7.0%

Zinc                      

9.0%

Phosphorus             

0.02% max

Mechanical Properties (Minima all sizes Continuous Cast)

UTS

200 N/mm2

0.2% Proof Strength

100 N/mm2

Elongation

8%

Hardness

70 HB

Key Features

  • High wear resistance
  • Excellent Machinability
  • Good corrosion resistance

Typical Physical Properties

Melting Point

1005°C

Density

8.7 g/cm³

Thermal conductivity (RT)                      

61 W/m°K

Electrical conductivity

16.4 % IACS

Thermal expansion coefficient (20-200°C) 

18 x 10-6 / ?C

Modulus of Elasticity

89 GPa

Fabrication Properties

Hot Formability

Not Recommended

Cold Formability

Not Recommended

Machinability rating

(free cutting brass = 100)

90%

Stress Relieving Temp. Range

260°C (1hr per inch thickness)

Maximum operating temperature

230°C

Joining Methods

Soldering

Excellent

Brazing

Good

Oxy-acetylene welding

Not recommended

Gas-shielded arc welding

Not recommended

Typical Uses

Traditional uses for the CC490K / LG1 would be in general hardware, ornamental castings, plumbing supplies and fixtures together with light bearing bushes and low pressure valves and fittings.

This technical information is given by Holme Dodsworth Metals without charge and the user shall employ such information at their own discretion and risk. For more detailed technical advice on temper selection, fabrication, joining, machining, physical and mechanical data please contact us as space does not permit the listing of every feature of the material.

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Holme Dodsworth Metals Limited.
59/69 Heaton Park Road.
Newcastle Upon Tyne NE6 1SQ
Registered in England. Company No. 00842702