Short answer: Copper-nickel (CuNi) alloys — mainly 90/10 (C70600) and 70/30 (C71500) — combine high resistance to seawater corrosion and biofouling with good strength and weldability, making them the standard for shipbuilding, desalination, condensers, heat exchangers and offshore piping. They resist erosion-corrosion far better than steel or aluminium in flowing seawater and are readily welded by TIG, MIG or brazing with matched filler.
At a Glance
CuNi Selection
Relate to Copper Nickel Supplier, Copper Supplier and Nickel Supplier; selection parallels Stainless Steel Grades Explained.
Quality
Chemistry and mechanicals certified by Mill Test Certificate Guide, verified by Metal Ndt Guide. Relate to Metal Corrosion Inhibitor Guide.
Supply & QA
Protect via How To Prevent Metal Rust. HXSCO supplies CuNi tube, plate and fittings.
Get a Quote
Tell HXSCO your requirements and we will respond with a competitive quote and lead time.
Frequently Asked Questions
A Cu-Ni alloy (90/10 or 70/30) for seawater service.
Excellent corrosion and biofouling resistance.
C70600 (90/10) and C71500 (70/30).
Yes — easily welded by TIG, MIG or brazing.
HXSCO supplies CuNi tube, plate and fittings.
Source Copper-Nickel from HXSCO
HXSCO supplies CuNi 90/10 and 70/30 tube, plate and fittings for seawater and desalination. Send your grade and size for a quote.