Arsenical Copper C14700 is a high-purity copper alloy containing a small, controlled addition of arsenic (typically 0.02–0.10%). This minor alloying element significantly improves resistance to corrosion in aggressive water and steam environments.
Unlike brasses and bronzes, C14700 retains copper’s excellent thermal and electrical conductivity while offering superior resistance to erosion–corrosion, making it a preferred material for condenser and heat exchanger service.
Chemical Composition (Typical)
| Element | Typical % |
|---|---|
| Copper (Cu) | ~99.9 |
| Arsenic (As) | 0.02 – 0.10 |
| Oxygen | Very low |
| Other Impurities | Strictly controlled |
Electrical & Thermal Properties
| Property | Typical Value |
|---|---|
| Electrical Conductivity | 85 – 90% IACS |
| Thermal Conductivity | Very high |
| Heat Transfer Efficiency | Excellent |
Mechanical & Physical Properties
| Property | Typical Range |
|---|---|
| Tensile Strength | 210 – 260 MPa |
| Yield Strength | 70 – 220 MPa |
| Elongation | High |
| Density | ~8.94 g/cm³ |
| Erosion–Corrosion Resistance | Excellent |
| Stress Corrosion Resistance | High |
Strengthening & Metallurgical Behavior
C14700 is a solid-solution strengthened copper alloy. Arsenic dissolves uniformly in the copper matrix and stabilizes protective oxide films on the surface.
✔ Suppresses erosion–corrosion
✔ Prevents selective leaching
✔ Improves resistance to impingement attack
✔ Slightly increases strength without embrittlement
Mechanical properties are controlled by cold working and temper; no precipitation hardening is involved.
Key Applications
Condensers & Heat Exchangers
Power plant condenser tubes
Desalination heat exchangers
Industrial heat exchanger tubing
Marine & Coastal Systems
Seawater piping
Marine condensers
Shipboard heat exchangers
Water & Steam Systems
Boiler feedwater lines
Steam condensate tubing
High-velocity water service
Industrial Process Equipment
Chemical plant heat exchangers
Cooling water systems
Oil & gas auxiliary heat transfer
Advantages of Arsenical Copper C14700
✔ Exceptional corrosion resistance in water and steam
✔ Excellent heat transfer efficiency
✔ Superior resistance to erosion–corrosion
✔ No dezincification or stress cracking issues
✔ Good fabrication, brazing, and soldering
✔ Long service life with reduced maintenance
Why Choose Arsenical Copper (C14700)?
Choose C14700 when your application demands high thermal conductivity combined with long-term corrosion resistance in aggressive water, steam, or marine environments.
In simple terms:
Pure Copper – best conductivity
DHP Copper – general fabrication
Arsenical Copper (C14700) – best copper for aggressive water and condenser service