Copper Chromium Zirconium | Alloy Grade - CuCrZr
Material No. Unified Numbering System (UNS): C18150
Chemical Composition
| Element | Cu(1,2) | Cr | Zr |
|---|---|---|---|
| Min (%) | 0.5 | 0.03 | |
| Max (%) | Rem | 1.5 | 0.3 |
1. Cu + Sum of Named Elements 99.7% min.
2. Cu value includes Ag.
This is high conductivity heat treatable copper alloy. Heat treatment cycle consists of Solutionizing followed by ageing Process.
Common Fabrication Processes
Forging
Drawing
Ring Rolling
Machining
Extruding
Impacting
Bending
Mechanical & Electrical Properties
| Form | Range in mm | Tensile Strength in N/MM² | Elongation in % | Rockwell Hardness HRB | Conductivity% |
|---|---|---|---|---|---|
| Rod | < 25 | ≥450 | ≥10 | ≥72 | ≥78 |
| Rod | 25-50 | ≥370 | ≥12 | ≥72 | ≥77 |
| Rod | > 50 | ≥360 | ≥15 | ≥70 | ≥77 |
| Flat Products | - | ≥360 | ≥10 | ≥65 | ≥77 |
| Tube as extruded Condition | - | - | - | ≥65 | ≥77 |
| Forged Block | - | - | - | ≥75 | ≥77 |
| Seam Welding Wheel | minØ 60 max.as per Customer Requirement | - | - | ≥75 | ≥8 |
| SC Ring | OD minØ 200 max. as per Customer Requirement | ≥360 | ≥15 | - | ≥7 |
Physical Properties
| Melting Point – Liquidus °C | 1080 |
| Melting Point – Solidus °C | 1070 |
| Density lb/cu in. at 20°C | 0.321 |
| Specific Gravity | 8.89 |
| Electrical Conductivity% IACS at 20°C | 80 |
| Thermal Conductivity Btu/ sq ft/ ft hr/ °F at 20°C | 187 |
| Coefficient of Thermal Expansion 20-100 10-6 per °C (20 – 100°C) | 9.5 |
| Modulus of Elasticity in Tension ksi | 17000 |
Applicable Form & Size
| Form | Size Dimensions |
|---|---|
| Rod | Dia: Ø6 mm-Ø50mm | Length: 2 Mtr. max Dia: Ø51 mm-Ø100mm | Length: 1 Mtr. max Dia: Ø101 mm-Ø145mm | Length: 0.5 Mtr. max |
| Flat | Thick: 5 mm-60 mm | Width: 20 mm-150 mm | Length: 2 Mtr. max |
| Profile | Circumscribing circle of Dia 30 to 150 mm |
| Wheel | Dia: Ø400 mm max | Thick: 6 mm – 50 mm |
| Tube as extruded Condition | ID: Ø45 mm- Ø117mm | OD: Ø85 mm- Ø150mm |
| Forged Block | Thick: 170 mm max | Width: 320 mm max | Length: 600 mm max |
| Short Circuit Ring | OD: Ø270 – Ø830 mm | ID: Ø160 – Ø700 mm | Thick: 17mm to 90mm |
Apart from above we can also manufacture as per customer specification.
Typical Industrial Applications
Electrical Sector
- Electrical Connectors in Transformer Applications
- Electrical Contacts in MV/HV Switch Gear Application
- Short Circuit Ring and Rotor Bars in Traction & Industrial Motor Applications
- Rotor Current Carrying Rod for MV & HV Turbo Generators
- Electron Tube Grid Side Rods
- Parts for Electronic Devices
- Semi-Conductor Industry
Industrial & Automotive Sector
- Resistance Welding Machine Electrodes
- Seam Welding Wheels in Automobile Industry
- Mould plates for casting in steel & Brass melting Industry