Product Overview: ASTM B111 C70600 Seamless Copper-Nickel Tube (16×1.0mm, 3000mm)
C70600, also known as 90/10 Copper-Nickel, is a marine-grade copper alloy containing 90% copper and 10% nickel. It’s renowned for its outstanding resistance to seawater corrosion, biofouling, and stress corrosion cracking, making it a top choice for condenser tubes and heat exchanger systems, especially in power plants, desalination, and shipbuilding.
This specific product — ASTM B111 C70600 (O61 annealed) seamless tube, with outer diameter 16mm, wall thickness 1.0mm, and length 3000mm — is thoroughly tested with 100% Eddy Current Testing, ensuring every tube is structurally sound and leak-free before use in high-performance systems.
Product Specifications
- Standard: ASTM B111 / ASME SB111
- Grade: C70600 (UNS C70600), 90/10 Copper-Nickel
- Temper: O61 (annealed, for maximum ductility)
- Outer Diameter: 16 mm
- Wall Thickness: 1.0 mm
- Length: 3000 mm
- Type: Seamless Tube
- Testing: 100% Eddy Current Tested (ECT)
- Application: Condensers, coolers, marine heat exchangers
Chemical Composition of C70600 (Typical)
| Element | Content (%) |
|---|---|
| Copper (Cu) | 88.6 min (includes silver) |
| Nickel (Ni) | 9.0–11.0 |
| Iron (Fe) | 1.0–1.8 |
| Manganese (Mn) | ≤ 1.0 |
| Zinc (Zn) | ≤ 1.0 |
| Lead (Pb) | ≤ 0.05 |
| Others (incl. impurities) | ≤ 0.5 |
Nickel and iron in the alloy enhance mechanical strength and seawater corrosion resistance, while maintaining thermal conductivity suitable for condenser performance.
Mechanical Properties (O61 Temper)
| Property | Typical Value |
|---|---|
| Tensile Strength | ≥ 275 MPa |
| Yield Strength | ≥ 105 MPa |
| Elongation (in 5D) | ≥ 30% |
| Hardness (HRB) | ≤ 65 |
| Thermal Conductivity | ~50 W/m·K |
| Maximum Operating Temp | ~300°C (572°F) |
C70600 combines moderate strength with excellent flexibility and long-term reliability under fluctuating thermal and pressure loads.
Key Applications
1. Condenser Tubes (Power Plants & Refineries)
C70600’s excellent resistance to chloride-induced corrosion and biofouling makes it ideal for steam condensers and water-cooled systems.
2. Shipbuilding & Marine Heat Exchangers
Performs reliably in brackish, polluted, or high-velocity seawater, making it suitable for marine engine cooling systems and offshore structures.
3. Desalination Systems
Used in MSF (multi-stage flash) and RO (reverse osmosis) desalination units for long-lasting anti-corrosive performance.
4. Air Conditioning & Refrigeration
Ensures clean heat transfer and resistance to internal corrosion in HVAC systems operating in humid or coastal zones.
100% Eddy Current Testing – Non-Destructive Assurance
Each tube undergoes 100% eddy current testing (ECT) to detect:
- Internal/external flaws
- Surface cracks or pinholes
- Variations in wall thickness
- Manufacturing defects
This test ensures high-integrity tubes, minimizing risk of leaks or failures in critical systems.
Packaging & Delivery
- Packing: End-capped, bundled in PE-wrapped wooden crates for export
- Marking: Clear identification on tubes and bundles (spec, size, heat number)
- Delivery: Global shipping by air or sea with fast turnaround and flexible MOQs
Why Choose ASTM B111 C70600 Copper-Nickel Tubes?
| Advantage | Description |
|---|---|
| Marine-Grade Corrosion Resistance | Withstands seawater, brine, and polluted waters |
| Excellent Heat Transfer | Stable thermal conductivity ensures high system efficiency |
| Low Maintenance | Long service life and low fouling rate |
| Proven Safety | 100% Eddy Current Testing to eliminate defects |
| Weldable & Formable | Easy fabrication during installation and retrofitting |
Call to Action
Upgrade Your Condenser Tubing with Copper-Nickel C70600
For industries where performance, reliability, and corrosion resistance are non-negotiable, DLSS provides ASTM B111 C70600 seamless tubes — tested, certified, and globally trusted.
Request a quote today or speak with a copper alloy specialist:
www.dlsspipeline.com
info@dlsspipe.com
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