Hangbo Alloy Group
Shanghai · Est. 2012
Copper-nickel alloys (90/10 and 70/30) are the reference materials for seawater piping, heat exchangers and offshore firewater systems.
What are Copper-Nickel alloys?
Copper-nickel alloys (90/10 and 70/30) are the reference materials for seawater piping, heat exchangers and offshore firewater systems. This index lists 4 technical articles covering composition, mechanical properties, temperature limits, corrosion behaviour and welding practice for each grade.
Copper-nickel alloys (90/10 and 70/30) are the reference materials for seawater piping, heat exchangers and offshore firewater systems. Hangbo Alloy Group stocks and supplies these grades in round bar, seamless tube, plate, sheet, precision strip, forging, wire and machined-part forms, with mill test certificates to EN 10204 3.1 / 3.2.
| Grade | UNS | Type | Summary |
|---|---|---|---|
| Copper-Nickel 70/30: Complete Properties & Application Guide | — | Grade guide | Complete technical guide to Copper-Nickel 70/30 (UNS C71500 / W.Nr. 2.0882). Chemical composition, mechanical properties, corrosion resistance. |
| Copper-Nickel 70/30: Marine Piping & Offshore Corrosion Resistance | — | Grade guide | Complete technical guide to Copper-Nickel 70/30 (UNS C71500 / W.Nr. 2.0882). Superior seawater corrosion resistance, high-velocity erosion resistance. |
| Copper-Nickel 90/10: Complete Properties & Application Guide | — | Grade guide | Complete technical guide to Copper-Nickel 90/10 (UNS C70600 / W.Nr. 2.0872). Chemical composition, mechanical properties, corrosion resistance. |
| Copper-Nickel 90/10: Seawater Corrosion Resistance & Heat Exchanger Applications | — | Grade guide | Complete technical guide to Copper-Nickel 90/10 (UNS C70600 / W.Nr. 2.0872). Outstanding seawater corrosion resistance, biofouling resistance. |
Round bars · Seamless tubes · Plates & sheets · Precision strips · Forgings & rings · Welding wire. Not every grade is stocked in every form — cast superalloys, for example, are supplied as master alloy ingots and investment castings rather than wrought bar. Contact us for current stock and size ranges.
Supplied to ASTM, ASME, AMS, DIN/W.Nr., EN, GB and GOST specifications. The individual grade articles list the applicable standard numbers for each product form.
Copper-nickel (Cu-Ni) alloys, principally 90/10 (C70600) and 70/30 (C71500), are copper-based alloys with nickel additions for seawater corrosion resistance and biofouling resistance.
90/10 (C70600) is the most widely used for seawater piping and heat exchanger tubing; 70/30 (C71500) is chosen for higher velocity and more aggressive conditions.
Copper-nickel is generally more economical for piping runs, while Monel 400 offers higher strength and is preferred for pump shafts and high-velocity components.
ASTM B111 / B466 cover seamless condenser and heat exchanger tube and pipe; ASTM B171 and B122 cover plate and sheet.
Inconel · Hastelloy · Monel · Incoloy · Pure Nickel · Cast Superalloys — see the full family index.
Send your grade, specification, dimensions and quantity for a quotation. WhatsApp +86 13611656360 or email hangbo@nickel-alloy.com.