 |
The Leading Supplier of |
| PRECISION SEMI-FINISHED METALS | |
|
The Leading Supplier of |
| PRECISION SEMI-FINISHED METALS | |
CuCoBe C17500 AVINS |
Designation |
CuCoBe Ident. Symbol: CuCo2Be ASTM-No. (UNS): C17500 RWMA (USA): class 3 |
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| Standards | ASTM (USA): B441, B 534 ISO: R 1187 CuCo2Be | |
| Guaranteed
Composition |
Co
2.4 - 2.7 Be 0.4 - 0.7 Ni max. 0.3
Fe max. 0.1 Al max. 0.1 Si max.
0.2 Cu remainder |
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| Main technology characteristics | CuCoBe is a precipitation hardening Cu-alloy. In the heat treated normal condition, the material possesses considerable hardness and thermal stability with good electrical and thermal conductivity. | |
| Physical Properties | Specific weight | 8.8 g/cm³ |
| Specific heat | 0.4 J/g K | |
| Thermal conductivity (heat treated) | 210 - 240 W/mK | |
| Thermal expansion coefficient (68-572 °F) | 17.2 x 10-6 / K | |
| Electrical conductivity (solution heat treated, quenched) | 22 % IACS, 12 m/Ωmm² | |
| Electrical conductivity (heat treated) | 43 % IACS, > 25 m/Ωmm² | |
| Melting interval |
1832 - 1886 °F |
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| Mechanical Properties | Condition | Solution heat treated quenched TB 00 / H 065 | Hot formed heat-treated TF 00 / H220 | Hot formed special heat- treated H250 |
Cold formed heat-treated Th 02 / H 270 |
| Hardness HB | 65 - 95 | > 220 | > 250 | > 270 | |
| Tensile strength [KSI] | > 36 | > 94 | > 109 | > 116 | |
| Yield strength Rm0.2 [KSI] | > 20 | > 73 | > 87 | > 102 | |
| Elongation A5 [%] | > 25 | > 8 | > 8 | > 5 | |
| Modulus of Elasticity [KSI] | ≈ 20000 | ≈ 20000 | ≈ 20000 | ||
| Softening temperature °F | 896 | 896 | 896 |
| Processing Instruction |
Hot forming: |
| CuCoBe is suitable for
hot forming at about 1650 - 1300 °F. A high oxidizing furnace
atmosphere should be avoided. Rapid cooling is recommended after hot
forming.
Cold forming: |
|
| CuCoBe is suitable for
cold forming. Intermediate annealing for softening can be carried out at
approx. 1470 °F with subsequent rapid cooling.
Heat treatment: |
|
| To achieve optimum properties,
CuCoBe should be solution heat-treated and fast quenched in water. This
is followed by age hardening.
Solution heat treatment: |
|
| 1650 - 1760 °F. 15 - 60 minutes. Quenching in water | |
| Hardness measurement control: max. 100 HB | |
| Conductivity control: approx.
12 m/Ωmm²
Age hardening: |
|
| 860 - 930 °F 1 - 5 hours. Air
cooling (Not in water!)
Machining and Processing: |
|
| It is recommended that this type
of machining (e.g. turning, milling, drilling) be carried out in the age
hardened condition. If drilling, using a larger angle or
twist is recommended. Please allow for sufficient cooling.
Soldering Capabilities: |
|
| CuCoBe 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. Attention must be paid to good aeration and
ventilation as well as welding smoke extraction. Clean metallic surfaces
are required for all soldering.
> Material Safety Data Sheet, Issue 01.05.97 (acc. to EC-Directive 93/112/EC)
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| Application | C17500 (CuCoBe-) 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. C17500 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, and sealing heads. |
| 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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