CuCrZr (CW106C / C18150 / 2.1293 / RWMA Class II) is a specialized copper alloy strengthened with chromium (Cr) and zirconium (Zr), offering a unique combination of high electrical conductivity and mechanical strength. After heat treatment, it provides an ideal balance between mechanical performance and electrical conductivity, delivering high reliability under demanding industrial conditions.
The C18150 alloy is an excellent choice particularly for resistance welding systems, hot runner mold components, and parts operating at elevated temperatures.
Technical Advantages:
- High electrical conductivity (75–85% IACS)
- Increased tensile and yield strength after heat treatment
- Outstanding resistance to wear and thermal fatigue
- Dimensional stability at high temperatures
- Good weldability and precision machinability
- Long service life with minimal deformation risk
Main Application Areas:
Resistance Welding: Spot and seam welding electrodes, welding tips, pressure heads
Mold Making: Core inserts in plastic injection molds, hot runner system components
Electrical & Automation: High-current terminals, conductive components
Defense & Aerospace: Structural components under thermal stress, radar cooling elements
Automotive & White Goods: Welding equipment parts, heat transfer components
Standards and Quality Assurance:
EN: CW106C
UNS / ASTM: C18150
DIN: 2.1293
RWMA: Class II
All products undergo full quality control procedures and are supplied with chemical analysis reports and mechanical test certificates. They are fully compliant with RoHS and REACH directives.
CHEMICAL COMPOSITION
| Cu | Cr | Zr |
|---|---|---|
| % rem | % 0.3-1.2 | % 0.03-0.3 |
AVALIABLE STANDART
| EN | ASTM | AMS | DIN | RWMA |
|---|---|---|---|---|
| CW106C | C18150 | 2.1293 | CLASS II |
APPLICATIONS
- Resistance welding electrodes
- Spot welding electrodes
- Seam weldings
- Molds, Guns and Tips
- Rod Extensions
- Short Circuit Rings (Rotor End Rings)
- Rotor Bars
- Circuit Breaker Switches
- Electrical components
SUPPLIED FORM
- Ring
- Plate
- Disc
- Centifurigal
- Square bars
- Hexagon bars
- Rectangularbars
- Tubes as Forged
- Round bar
- Custom shapes are available upon request
PHYSICAL PROPERTIES
| Density | Specific Heat | Electrical Conductivity | Electrical Conductivity (I.A.C.S.) | Thermal Conductivity |
|---|---|---|---|---|
| 8.9 g/mm3 | 0.38 J/g.K | min. 43 MS/m | min. 75% | 320 W/m.K |
MECHANICAL PROPERTIES
| MATERIAL CONDITION | Tensile Strenght Rm N/mm² | Yield Strengh Rp 0,2 N/mm² | Elongation (A5) % | Hardness (Brinell) HB30 |
|---|---|---|---|---|
| EXTRUDED | min. 400 | min. 310 | min. 13 | min. 130 |
| FORGED | min. 360 | min. 270 | min. 15 | min. 125 |
1. Resistance Welding Applications
Spot and seam welding electrodes
Welding holders, adapters, and arms
Welding tips exposed to high temperatures
High-volume automotive welding production lines
2. Electrical and Energy Systems
High-current conductive bars
Short-circuit rings and rotor bars for squirrel-cage motors and generators
Transformer connection terminals
Electrical contact components requiring arc resistance
3. Mold and Injection Industry
Heat-dissipating core inserts used in plastic injection molds
Thermally stable regions in aluminum die-casting molds
Cooled mold components
4. Automotive Industry
Long-life electrodes for high-cycle welding lines
Sensor and connector housings exposed to thermal stress
Welding components for body and chassis joining
5. Aerospace and Defense Industry
Temperature-resistant components in electrical connection systems
Radar systems and signal transmission elements
Connections resistant to EMI/RFI interference
6. Heat Transfer and Cooling Systems
Heat exchangers and cooling blocks
Conductive elements in industrial temperature-control systems
High-efficiency heat-spreading surfaces
