The illustration shows the manufacturing process of titanium clad copper bars.
The quality of clad materials can be demonstrated with a torsion test,. During this test strips of the material are taken out of the bond zone and twisted around their own axis several times. Clad materials of high quality must not demonstrate any separation of material after the test. TiCu Clad is a metallurgical clad material of high quality where no impairment of the bonding materials will occur.
Further processing
The clad material is so strong that the clad titanium can be welded with other titanium components by tungsten-inert gas welding (TIG-welding), laser or spot welding without damaging the compound.
Connections
The professional connection to the power supply is a constantly recurring question in dealing with titanium clad copper bars.
Electrical specialists often plead for the removal of the more poorly conducting titanium from the the contact surfaces.
In order to guarantee optimal current transfer, the connection surfaces are cleaned of titanium by milling or turning. This is a correct method with respect to the electrical conductivity of copper (58 mS) compared to titanium (2.2 mS).
This means that a copper wire with a length of 58 m and a cross section of one square millimeter has a resistance of one Ohm. With titanium the resistance of one Ohm is already achieved at a length of 2.2 m.
However practice shows that environmental influences must be taken into consideration.
When the contact surfaces are cleaned of titanium, the copper is now exposed to corrosive media like aggressive acids, steams and condensates in the galvanic treatment.
The copper then gradually corrodes resulting in point contact on the contact surfaces and bad current transfers.
Standards and material
Standards
Coat titanium, material-No. 37025 or 3.7035, DIN 17850, ASTM B 265 Grade 1 or 2
Core material acc. to EN 13601, CU-HCP, CW021A, ANSI / ASTM B 244, UNS No.C 10300
Electric conductivity
Cu-HCP ≥99 % IACS 58 MS/m
General informationen
Relation to copper
| Titanium | 1 : 26 at 20° C 1 : 66 at 400° C | |
| Stainless steel | 1 : 42 | |
| TiAI6V4 | 1 : 100 |
Material
| Material | Electrical conductivity in mS / m | |
| Titanium / Cu on titanium | 2.153 | |
| Titanium grade 2 1.5 mm sheet | 2.110 | |
| Titanium grade 2 | 2.240 | |
| TiAI VT 01 12.7 x 6.3 mm | 1.645 | |
| TiAI VT 01 25.4 x 12.7 mm | 1.819 | |
| TiAI6V4 | 0.58 | |
| Copper | 58.0 | |
| CuCoBe | 30.0 | |
| CuCrZr | 49.0 | |
| W/Cu 75/25 | 19 – 24.0 | |
| CuP6 | 4.0 | |
| AI | 28.65 | |
| AIMgCuPb | 20.45 | |
| Stainless steel | 1.3 |
Bearing dimensions
| Form | Dimension in mm | Dimension in Zoll (inch) | ||
| Round | 6,35 - 44,45 mm | ¼” - 1 ¾” | ||
| 4-kt | up to 38 mm | up to 1 ½” x 1 ½ | ||
| Rectangle – flat | up to 20 x 120 mm | up to 0.8' x 4 “ | ||
| Wire | 0,75 – 6,35 mm | 0,030' – 1/4' |
Further clad materials
| Compound extrusion pressed bars | Explosion-platinated sheets | |
| Zirconium Clad copper | Zirconium – Copper | |
| Niobium Clad copper | Niobium - Copper | |
| Nickel Clad copper | Nickel - Copper | |
| Titanium - Copper | ||
| and a lot of others | and a lot of others |
