Technical Specifications
Conductivity
≥45% IACS
Hardness (AWS J1.3)
≥90 HRB
Beryllium
0% Be
Advantage
Beryllium Free
Properties Table
| Property | Value | Unit |
|---|---|---|
| UNS Code | C18000 | - |
| Composition | Cu + Cr + Ni + Si (No Beryllium) | % wt |
| Electrical Conductivity | ≥45 | % IACS (AWS J1.3 min) |
| Hardness | ≥90 | HRB (AWS J1.3 min) |
| Thermal Conductivity | ~190 | W/m·K |
| Softening Temperature | ~480 | °C |
| Density | 8.75 | g/cm³ |
When to Use C18000?
C18000 meets AWS J1.3 Class 3 specifications (≥45% IACS, ≥90 HRB) but without beryllium:
- 100% beryllium free - No special machining protocols required
- Meets Class 3 specification - ≥90 HRB minimum per AWS J1.3 Table 5
- Cost-effective alternative - Without beryllium or cobalt costs
- Simplified compliance - No beryllium MSDS required
- Safe for all processing - No machining restrictions
- Different composition - Uses Ni + Si + Cr instead of Be for hardening
Comparison: C18000 vs Beryllium Class 3
| Characteristic | C18000 (Be Free) | C17510 (CuNiBe) |
|---|---|---|
| Beryllium Content | 0% Be | 0.2-0.6% Be |
| Conductivity (AWS J1.3) | ≥45% IACS | ≥45% IACS |
| Hardness (AWS J1.3 min) | ≥90 HRB | ≥90 HRB |
| Composition | Cu + Ni + Si + Cr | Cu + Ni + Be |
| Safety | No restrictions | Solid bars safe * |
| Cost | More economical | Higher investment (beryllium) |
| Availability | Made to order | Permanent stock |
* Solid C17510 bars are safe to handle. Risk only during machining with dust generation. See OSHA Guide
Main Applications
Strict Regulatory Compliance
Companies with zero beryllium policies or strict regulatory requirements
Export to Europe
Markets with more restrictive regulations on beryllium materials
Shops Without Special Infrastructure
Operations without HEPA extraction systems for beryllium machining
Class 3 Alternative
When higher hardness than Class 2 is needed but without beryllium
C18000 Positioning: Meets AWS J1.3 Class 3 specification (≥45% IACS, ≥90 HRB minimum) but without beryllium. Ideal for companies with zero-beryllium policies or for applications requiring simplified regulatory compliance. All three Class 3 alloys (C17510, C17500, C18000) meet the same minimum specification.