CC491K Bronze Casting
CC491K Bronze Casting is a leaded tin bronze specified under EN 1982 CC491K (CuSn10Pb2), equivalent to DIN 2.1052. It combines the strength of a 10% tin bronze with improved machinability from the 2% lead addition, making it suitable for precision bearing and valve applications. Indicative price: US$ 10.20/kilogram.
CC491K Chemical Composition (EN 1982)
| Element |
Min % |
Max % |
| Copper (Cu) |
rem |
— |
| Tin (Sn) |
9.0 |
11.0 |
| Lead (Pb) |
1.0 |
3.0 |
| Zinc (Zn) |
— |
0.50 |
| Nickel (Ni) |
— |
1.0 |
| Iron (Fe) |
— |
0.20 |
CC491K Mechanical Properties (Sand Cast – EN 1982)
| Property |
Value |
| Tensile Strength |
260 MPa min |
| Yield Strength (0.2%) |
130 MPa min |
| Elongation |
10% min |
| Brinell Hardness |
80 HB typical |
| Density |
8.77 g/cm³ |
International Equivalents of CC491K
| Standard |
Designation |
Common Name |
| Europe – EN 1982 |
CC491K |
CuSn10Pb2 |
| Germany – DIN |
2.1052 |
CuSn10Pb |
| UK – BS 1400 |
PB1 |
Phosphor Bronze |
| USA – UNS |
C90500 / C92700 |
Gun Metal / Leaded Tin Bronze |
| ISO 1338 |
CuSn10Pb2 |
Leaded Tin Bronze |
| Japan – JIS H5111 |
CAC407 |
Tin Bronze |
Typical Applications
CC491K bronze castings are used for: precision bearings and bushings, pump and valve components, marine fittings, hydraulic equipment components, machinable gear blanks, and structural castings requiring combined strength and machinability.
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