 |
The Leading Supplier of |
| PRECISION SEMI-FINISHED METALS | |
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The Leading Supplier of |
| PRECISION SEMI-FINISHED METALS | |
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CuCoNiBe 260 AVINS |
Designation |
CuCoNiBe 260 EN: CW 103 C, Type A 3/1 RWMA (USA): class 3 |
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Standards |
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Guaranteed Composition |
Co 0.8 - 1.3 Be 0.4 - 0.7 Ni 0.8 - 1.3 Fe max. 0.1 Al max. 0.1 Si max. 0.2 Cu remainder | |
Main technology characteristics |
CuCoNiBe 260 is a precipitation hardening Cu-alloy. In the heat treated normal condition, the material possesses considerable hardness and thermal stability with very good electrical and thermal conductivity. |
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Physical Properties |
Specific weight |
8.8 g/cm³ |
| Specific heat | 0.4 J/g K | |
| Thermal conductivity (heat treated) | 230 - 250 W/mK | |
| Thermal expansion coefficient (68-572 °F) | 17.2 x 10-6 / K | |
| Electrical conductivity (solution heat treated, quenched) | ca. 20 % IACS, ca. 12 MS/m | |
| Electrical conductivity (heat treated) | 48 % IACS, > 28 MS/m | |
| Melting interval | 1832 - 1886 °F | |
| Mechanical Properties | Condition | Hot formed special heat-treated H260 |
| Hardness HB | > 260 | |
| Tensile strength [KSI] | > 109 | |
| Yield strength Rp0.2 [KSI] | > 87 | |
| Elongation A5 [%] | > 8 | |
| Modulus of Elasticity [KSI] | ≈ 20000 | |
| Softening temperature °F | 896 |
| Processing instruction |
Hot forming: |
| CuCoNiBe 260 is suitable for
hot forming at about 1650 - 1300 °F. A highly oxidizing furnace
atmosphere is to be avoided. Rapid cooling is recommended after hot
forming.
Cold forming: |
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| CuCoNiBe 260 is suitable for
cold forming. Intermediate annealing for softening can be carried out at
approximately. 1470 °F with subsequent rapid cooling.
Heat treatment: |
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| To achieve optimum properties,
CuCoNiBe 260 should be solution heat-treated and fast quenched in water. This
is followed by age hardening.
Solution heat treatment: |
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| 1650 - 1760 °F. 15 - 60 minutes. Quenching in water. | |
| Hardness measurement control: max. 100 HB | |
| Conductivity control: approx.
12 m/Ωmm²
Age hardening: |
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| 860 - 930 °F 1 - 5 hours. Air
cooling. NOT IN WATER.
Machining and processing |
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| It is recommended that this type
of machining (e.g. turning, milling, drilling) be carried out in the age
hardened condition. If drilling, a larger angle or twist is recommended.
Allow for sufficient cooling. Solder Capabilities: |
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| CuCoNiBe 260
can be soft soldered in the age hardened condition. However, the maximum
temperature during soldering cannot exceed 750°F. Hard soldering with a
silver solder with a low melting point is also possible. Nevertheless, a
loss of hardness is to be expected even with limited soldering.
Gas-shielded and resistance welding are also possible, though preferably
in a solution heat-treated condition. Allow good aeration and
ventilation as well as welding smoke extraction. Clean metallic surfaces
are required for all soldering.
> Material Safety Data Sheet, Iss. 01.05.97 (acc. to EC-Directive 93/112/EC)
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| Application | CuCoNiBe 260 is used for electrodes, brackets, and shafts for spot, seam, butt and projection welding for materials with high strength and greater electrical resistance as well as cast steel. It can also be used as cooling inserts in molds, molds for non-ferrous metals, inserts in steel tools requiring a fast cooling speed, and molds for plastics, leather and wood imitations as well as for nozzles and needles for hot channel systems, sealing heads, and die-casting pistons. |
| Details of the properties or application of materials are for descriptive purposes only. Confirmation of suitability with regard to specific properties or application require written agreement. | |
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