L49
CuNi9Sn2
Cu reste Ni8.5-10.5 Sn1.8-2.8 Pb0.03 max
Chemical composition |
---|
CuBAL
Ni8.5-10.5
Zn0.5 max
Pb0.03 max
Sn1.8-2.8
Fe0.6 max
Mn0.2 max
Alloy name | |
---|---|
RLSA no. | 540 |
EN standard | CW351H |
DIN standard | 2.0875 |
UNS no.* | C72500 |
*Unified Numbering System (USA)
Characteristics and main uses
Physical properties | Units | |
---|---|---|
Density (20°C) | 8,89 | Kg/dm³ |
Melting point | 1060-1130 | °C |
Longitudinal elasticity modulus | 140 | GPa |
Thermal conductivity | W/m·K | |
Electrical conductivity | >4.64 | m/Ω·mm² |
Electrical resistivity | <0.2155 | µΩ·m |
Linear expansion Coefficient | 17,6 | 10⁻⁶·K⁻¹ |
IACS (International Annealed Copper Standard) | 11 | % |
Poisson's ratio | 0,34 |
Capabilities | |
---|---|
Corrosion resistance | 2 |
Hot deformation | 3 |
Cold deformation | 4 |
Electrodepositing | 4 |
Diamond cutting | 4 |
Nitriding | |
Mechanical polishing | 3 |
Welding without filler | 3 |
Brazing | 3 |
1 poor | 2 average | 3 good | 4 very good | - no info