Copper-beryllium
These copper alloys - beryllium with Cu have high mechanical chateristics similar to the high ressistance steels, once submitted to the accurate thermal processing.
Also have a good thermal and electrical conductivity, as well as an excellent flexible characteristics.They are resistant to the corrosion and gets magnetical properties.
| DESIGNACION | K-301 | K-302 | K-303 | K-304 |
| Chemical composition | 98,35%Cu 0.35%Be 1,3%Ni |
96,9%Cu 0,6%Be 2,5%Co-Ni |
98%Cu 1,7%Be 0,3%Co-Ni |
97,5%Cu 2%Be 0,5%Co-Ni |
| Electrical Conductivility ( % I.A.C.S. ) |
50-80 | 40-50 | 25 | 18 |
| Hardness Rockwell Hardness Brinell HB |
R/B 76-86 140-170 |
R/B 89-97 180-230 |
R/C 33-37 320-360 |
R/C 33-43 360-410 |
| Tensile strenght (Kg/mm²) | 62-69 | 65-75 | 101-110 | 109-115 |
| Elongation 50 (mm - %) | 5-11 | 3-10 | 2-4 | 1 |
| Yield strenght (Kg/mm²) | 32-39 | 40-55 | 63-69 | 70-84 |
| Softening temperature (ºC ) | 500 | 500 | 300 | 300 |
| Density (Kg/dm³) | 8,65 | 8,62 | 8,26 | 8,09 |
| Equivalences | C.A.N.º822 | Class 3 R.W.M.A. UNE C-54 XX C.A.Nº820 UH 2 Be from AFNOR | Class 4 R.W.M.A. UNE C-54 C.A.N.º824 |
C.A.N.º825 |
| Applications | Tweezers arms, carries electrodes and utillajes of weld by resistance | Parts of you scheme useful and weld electrodes by resistance, aparellaje electrical, contacts, pistons to you scheme of injecting aluminium... | Security tools, unspark and antimagnéticas, court pieces, supports for contacts, elastic clips | Molds to I talk, trolley pulleys... |
| Supply | Melted, Wrought, Print | Melted, Wrought, Print | Melted, Laminated | Melted |
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