Freshwater cooling duty at a cost step below copper-nickel — see the grade table below for full datasheets and equivalents within this family.
See All Grades ↓This family covers copper and its common alloys — brass, aluminium bronze, phosphor bronze, and naval brass — used primarily for freshwater cooling and condenser service where seawater's chloride severity isn't present. These alloys offer good thermal conductivity and adequate corrosion resistance in freshwater at a lower cost than the copper-nickel family, but are not typically recommended for seawater duty.
Naval brass and aluminium bronze offer somewhat better corrosion resistance within this group; phosphor bronze is valued for its mechanical properties in specific fitting and fastener applications adjacent to tube sheet assemblies.
| Grade | Designation | Best For |
|---|---|---|
| Naval Brass (datasheet in development) | UNS C46400 | Freshwater condenser service, moderate corrosion resistance |
| Aluminium Bronze (datasheet in development) | UNS C61400 | Improved strength and corrosion resistance over standard brass |
| Phosphor Bronze (datasheet in development) | UNS C54400 | Fittings and components adjacent to the tube sheet assembly |
Not recommended — for seawater or brackish water service, the Copper-Nickel family (90/10 or 70/30) offers meaningfully better corrosion and biofouling resistance at a modest cost increase.
Primarily cost — since freshwater doesn't present the same chloride corrosion challenge as seawater, the additional nickel content in copper-nickel alloys isn't necessary, making this family more economical for freshwater duty.
Availability varies by specific alloy and size — send your specification and quantity, and our engineering team will confirm current stock and lead time.
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