C70600 Copper Nickel, commonly referred to as cupronickel, is a family of copper-nickel alloys known for their excellent corrosion resistance, particularly in marine environments, and good thermal and electrical conductivity, making them ideal for applications such as heat exchangers, condenser tubes, and components in the naval and marine industries.
Volume: 0
When seawater corrosion costs offshore platforms millions yearly, C70600 (90% Cu, 10% Ni, 1.4% Fe, 1% Mn) fights back. This marine alloy forms a self-repairing oxide layer that laughs off salt, sulfides, and sand abrasion. UNS C70600-certified — it’s the go-to for desalination plants, ship condensers, and LNG systems where failure means catastrophic downtime.
TECH SPECS: ENGINEERED FOR MARINE WARFARE
(Compliant with ASTM B122 / UNS C70600 / DIN 2.0872)
| Property | C70600 | 316 Stainless | Aluminum Bronze |
|---|---|---|---|
| Composition | 90% Cu, 10% Ni, 1.4% Fe, 1% Mn | 16% Cr, 10% Ni | 81% Cu, 11% Al |
| Corrosion Rate (Seawater) | 0.025 mm/yr | 0.12 mm/yr | 0.07 mm/yr |
| Max Flow Velocity | 4.5 m/s | 1.2 m/s | 3.0 m/s |
| Thermal Conductivity | 40 W/m·K | 16 W/m·K | 59 W/m·K |
| Biofouling Resistance | ★★★★★ | ★★☆☆☆ | ★★★☆☆ |
| Cost (2" Sch 40 Pipe) | $65/m | $95/m | $150/m |
Certifications: NORSOK M-630. ASTM B122. KTA 1401. EN 12451
TOP 4 ADVANTAGES: WHY ENGINEERS CHOOSE 90/10
Unbeatable Corrosion Resistance
0.025 mm/yr loss in Persian Gulf trials – protects ADNOC’s offshore rigs for 25+ years.
Biofouling Resistance
Reduces barnacle growth by 70% vs. steel – slashes hull cleaning costs for Maersk tankers.
Cryogenic Toughness
Maintains impact strength at -196°C – certified for Qatar’s LNG export terminals.
Lifecycle Value
50-year service in seawater – 3× lifespan of stainless steel at half the cost of titanium.
KEY FEATURES: MARINE-GRADE INTELLIGENCE
Self-Healing Surface: Fe-Mn oxide layer regenerates after damage within hours.
Cavitation/Crevice Proof: Passes ASTM G48 Method D (ferric chloride test).
Low Magnetic Permeability: <1.05 μ – ideal for naval degaussing systems.
Thermal Shock Resistance: Withstands 300°C→5°C cycles in heat exchangers.
MANUFACTURING PROCESS: PRECISION AGAINST CORROSION
Vacuum Induction Melting
O₂ ≤ 15 ppm eliminates porosity in critical condenser tubes.
Hot Extrusion + Cold Drawing
Seamless pipes up to 24" OD (ASTM B466), tolerances ±0.2 mm.
Solution Annealing
900°C water quench optimizes Fe-Ni dispersion.
Pickling & Passivation
Nitric acid treatment accelerates protective film formation.
DOMINANT APPLICATIONS
| Industry | Critical Components | Performance Validation |
|---|---|---|
| Desalination | Multi-stage flash evaporators | 40-year service in Shuweihat S1 (UAE) |
| Offshore Energy | Seawater cooling pipes, heat exchangers | Zero leaks at Equinor’s Johan Sverdrup |
| Shipbuilding | Condensers, ballast systems | Standard for US Navy DDG-1000 destroyers |
| LNG Processing | Cryogenic transfer lines | -162°C service in Yamal LNG (Arctic) |
| Coastal Power | Nuclear plant cooling circuits | Certified for Hinkley Point C (UK) |
Please Feel free to give your inquiry in the form below. We will reply you in 24 hours.
Products
Phone
