LG1 / CC490K
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 John Hood & Co.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.