Copper Alloy 706 (C70600)
Copper-Nickel, 90/10 Tubing
Alloy C706 copper tubing, commonly known as 90/10 Copper-Nickel, has excellent corrosion resistance, particularly in marine and industrial environments. This alloy is widely used in seawater piping systems, heat exchangers, and condensers due to its superior resistance to biofouling and stress corrosion cracking.
C706 Copper Alloy Designations
- UNS Number: C70600
- CDA Number: 706
- EN Number: CW352H
- EN Symbol: CuNi10
- Wieland: L23
Chemical Composition:
- Copper (Cu): 86.5%
- Iron (Fe): 1.0 – 1.8%
- Lead max (Pb): 0.05%
- Manganese max (Mn): 1.0%
- Magnesium max (Mg): .005%
- Nickel (Ni): 9.0 – 11.0%
Custom Engineered Shapes and Custom Fabricated Parts are available on request.
Available Forms:
- Straight Lengths:
- OD: 0.055″ to 2.250″
- Wall Thickness: 0.005″ to 0.110″
- Lengths: 0.125″ to 504″
- Copper Coils:
- OD: 0.055″ to 0.875″
- Wall Thickness: 0.005″ to 0.080″
Coil Formats:
- Bunch Coils:
- OD: 0.055″ to 0.144″
- Level-Wound Coils:
- OD: 0.156″ to 0.750″
- Pancake Coils:
- OD: 0.125″ to 0.750″
Equivalent Standards
- ASTM: B111, B466, B467, B543
- ASME: SB111, SB543
- MILITARY: MIL-T-16420, MIL-T-15005
- DIN: 17664, 1785
- EN: 12451
- JIS Standard: H3300
- Please reach out if you have a specific material specification you need us to review.
Industry Applications
Thermal
- Heat exchangers
- Evaporators
- Condensers
- Distillery
- Marine
- Chemical processing
- Aerospace
- Defense
Fluid & Gas Lines
- Oil and gas
- Distillery
- Hydraulic
- Refrigeration
- Seawater piping
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