ASTM B171 C71500 Copper Nickel 70/30 Alloy Plate, Marine Grade CuNi Sheet Anti-Corrosion for Heat Exchanger & Desalination

ASTM B171 C71500 Copper Nickel 70/30 Alloy Plate, Marine Grade CuNi Sheet Anti-Corrosion for Heat Exchanger & Desalination

1. Product Description
Copper Nickel Plate is a versatile copper‑nickel alloy plate offering balanced mechanical properties and corrosion resistance in marine and industrial environments. The alloy contains nickel (10% or 30%) together with controlled amounts of iron and manganese, which enhance resistance to impingement attack and improve weldability. Typical grades include C70600 (CuNi10Fe1Mn) and C71500 (CuNi30Fe2Mn2), as well as Chinese equivalents BFe10‑1‑1 and BFe30‑1‑1. Plates are produced by hot rolling, with optional cold rolling for thinner gauges and improved surface finish. They are supplied in various conditions (annealed, stress‑relieved, cold rolled) and with surface finishes including hot rolled pickled, cold rolled bright, polished, and chequered (diamond or lentil pattern). All plates meet the requirements of ASTM B171/ASME SB171 or EN 1652.
 
2. Product Applications

• Ballast water treatment systems (BWTS): Plate heat exchanger plates, electrochlorinator cell housings.

• Aquaculture (fish farming): Seawater intake screens, oxygen injection diffuser plates, net cage fittings.

• Tidal energy: Turbine nose cones, structural mounting plates for subsea connectors.

• Marine exhaust systems: Wet exhaust silencer internal baffles, cooling water injection plates.

• Specialty chemical plants: Plate columns for organic acid distillation (acetic, formic acids).

• Desalination waste outfalls: Dilution diffuser plates for brine discharge.

3.Product Advantages

• Predictable long‑term corrosion rates – Typically <0.025 mm/year in clean seawater.

• Excellent resistance to cavitation damage – Suitable for areas of pressure drop and turbulence.

• Good galvanic compatibility with other copper alloys – Can be connected to bronze or brass without severe galvanic issues.

• High fatigue endurance limit – Approximately 100 MPa for C70600, enabling use in dynamically loaded structures.

• Ease of explosive cladding – Can be clad onto carbon steel to produce bi‑metal plates for cost‑effective corrosion protection.

• Low magnetic signature – Desirable for mine countermeasure vessels and submarine applications.

• Wide availability in off‑the‑shelf sizes – Reduced lead times for standard dimensions.

4. Key Product Parameters

 
FAQ
1. Are you trading company or manufacturer ?
We are manufacturer ,You can see the certification.
2. How long is your delivery time?
Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.
3. Do you provide samples ? is it free or extra ?
Yes, we could offer the sample for free charge but need pay the cost of freight.
4. What is your terms of payment ?
Payment<=1000USD, 100% in advance. Payment>=1000USD, 50% T/T in advance ,balance before shippment.