Zhuzhou Jiabang Refractory Metal Co., Ltd
Zhuzhou Jiabang Refractory Metal Co., Ltd
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Hot sale tungsten Copper alloy bar W80Cu20
| RWMA CLASS | RWMA NO. | RWMA GENERAL USE | RWMA DESCRIPTION |
| 10 copper tungsten | C74450 | Flash and butt welding electrodes where good electrical and thermal conductivity is necessary and where a degree of malleability is desired. | A powder metallurgical combination of 45% copper and 55% of the refractory metal tungsten. Not a true alloy. This combination produces dense, hard metals of superior wear resistance and strength at elevated temperatures. In addition, they possess good thermal and electrical conductivity. |
| 11 copper tungsten | C74400 | Projection welding electrodes, flash and butt welding electrodes, light upsetting and seam welding bushings. Harder than Class 10 and used where moderate pressure is required. This material can also be used for spot welding low conductivity steels such as stainless. | A powder metallurgical combination of 25% copper and 75% of the refractory metal tungsten. Not a true alloy. This combination produces dense, hard metals of superior wear resistance and strength at elevated temperatures. In addition, They possess good thermal and electrical conductivity. |
| 12 copper tungsten | C74350 | Heavy duty projection welding electrodes, electro-forming and electo-forging electrodes facings for upsetting of studs and rivets, cross wire welding of large diameter wire and rod. | A powder metallurgical combination of 20% copper and 80% of the refractory metal tungsten. Not a true alloy. This combination produces dense, hard metals of superior wear resistance and strength at elevated temperatures. In addition, they possess good thermal and electrical conductivity. |
Advantages
Higer thermal conductivity
Low thermal expansion
High arc resistance combined with good electrical conductivity
Applications
Electrodes for resistance welding
Heat sinks as passive cooling elements of electronic devices
Electrodes in electric spark erosion cutting machines
Arcing contacts and vacuum contacts in high and medium voltage breakers or vacuum interruptions
Copper Tungsten Technical Data
| Composition | Density | Hardness | Resistivity | IACS | Bending Strength |
| g/cm3≥ | HB Kgf/mm2≥ | µΩ.cm≤ | %≥ | Mpa≥ | |
| W50/Cu50 | 11.85 | 115 | 3.2 | 54 | |
| W55/Cu45 | 12.3 | 125 | 3.5 | 49 | |
| W60/Cu40 | 12.75 | 140 | 3.7 | 47 | |
| W65/Cu35 | 13.3 | 155 | 3.9 | 44 | |
| W70/Cu30 | 13.8 | 175 | 4.1 | 42 | 790 |
| W75/Cu25 | 14.5 | 195 | 4.5 | 38 | 885 |
| W80/Cu20 | 15.15 | 220 | 5.0 | 34 | 980 |
| W85/Cu15 | 15.9 | 240 | 5.7 | 30 | 1080 |
| W90/Cu10 | 16.75 | 260 | 6.5 | 27 | 1160 |