| DESCRIPTION OF THE
MATERIAL: |
| Containg approximately 2,4% Nickel, 0,7%
Silicium and 0,4% Chromium after hot forging and heat treatment
processes this alloy gains relatively good hardness, electrical and
thermal conductivity. CuNi3Si+Cr is an alternative to CuCoNiBe alloy
without contaning Berylium. |
| APPLICATIONS: |
| Spot welding electrodes, electrode holders
and seam welding discs in resistance welding. Plunger tips in
Aluminium Die Casting machines. Injection nozzles, cooling pins in
plastic injection machines. Moulds for casting of non-ferrous
material. Chill moulds in casting of brass and bronze material. Due
to its good surface quality, homogen and fast cooling rate this
alloy has an excelent working performance. CuNi3Si+Cr alloy is an
Beryllium free alternative to CuCoNiBe
alloy |
| MECHANICAL PROPERTIES : |
| Tensile Strenght
Rm |
:
600-700 N / mm2 |
| Yield Strenght Rp
0,2 |
:
450-500 N / mm2 |
| Elongartion (A5)
|
:
5 %min |
| Hardness
(Brinell) |
:
180-220 HB30 |
| Hardness
(Rockwell) |
:
88 HrB |
| Elastic
Modulus |
:
131 x 103 N /
mm2 |
| PHYSICAL PROPERTIES: |
| Density |
:
8.7 g/cm3 |
| Specific Heat
|
:
0,38 j/g.K |
| Electrical Conductivity
|
:
26-28 MS/m |
| Electrical Conductivity
(I.A.C.S) |
:
45 - 48 % |
| Thermal Conductivity
|
:
208 W / m.K |
| Coefficient of Thermal
Expansion |
:
20 - 100 oC 17,5 x 10-6 /K |
| Working
Temparature |
:
480 oC
max | |
