Equipment that carries seawater, brackish water, or corrosive process fluid needs a material that won't degrade in service, and few alloys handle that environment as reliably as 443 Admiralty brass. 443 Admiralty brass machined parts are manufactured from a copper-zinc-tin alloy with an arsenic inhibitor that resists dezincification and corrosion in some of the harshest water conditions.
E.J. Basler delivers 443 brass machining services for production orders of 100,000 pieces and up, holding tight tolerances across every part.
Properties and Benefits of 443 Admiralty Brass
443 Admiralty brass contains roughly 71% copper, 28% zinc, and 1% tin, with a small addition of arsenic that inhibits dezincification in seawater and brackish water service. With tensile strength of 45,000 to 53,000 PSI and yield strength around 23,000 PSI, it holds up to continuous fluid exposure without sacrificing the machinability needed for precision components.
Key benefits of 443 Admiralty brass:
- Strong resistance to corrosion and dezincification in seawater and brackish water
- Tin content improves resistance to impingement attack in flowing water
- Tensile strength of 45,000 to 53,000 PSI
- Reliable heat transfer performance in tube and heat exchanger applications
- Long service life in marine and industrial water systems
- Cost-effective for production volumes of 100,000 pieces and beyond
Applications of 443 Admiralty Brass Machined Parts
443 brass screw machining supports precision components across marine, power generation, and industrial water systems wherever corrosion resistance is critical. Common applications include:
- Heat exchangers in oil refineries
- Feedwater heaters
- Steam condensers cooled by salt, fresh, or brackish water
- Evaporator and distiller tubes
- Desalination equipment
- Marine piping and fittings
- Bourdon tubes
- HVAC heat exchanger components
443 Brass Machining Services from E.J. Basler
E.J. Basler delivers 443 brass machined parts using Hydromat machining, Swiss machining, Davenport machining, and screw machining, scaled for production runs of 100,000+ pieces. Every component ships with the quality, tolerances, and surface finish your application demands.
Frequently Asked Questions
What makes 443 Admiralty brass resistant to corrosion?
An arsenic addition inhibits dezincification, while the alloy's tin content improves resistance to impingement attack, making 443 Admiralty brass reliable in seawater, brackish water, and other corrosive fluid environments.
Is 443 Admiralty brass suitable for heat exchanger tubes?
Yes. Its corrosion resistance and heat transfer performance make it a standard choice for condenser and heat exchanger tubes cooled by salt, fresh, or brackish water.
What tolerances can E.J. Basler hold on 443 brass machined parts?
On Hydromat, Swiss, and multi-spindle platforms, we routinely hold tolerances within plus or minus 0.0005 inches. Tighter tolerances are available with secondary grinding operations.
How does 443 Admiralty brass compare to standard brass in marine environments?
Standard brass alloys are more prone to dezincification in seawater, while 443 Admiralty brass's arsenic inhibitor and tin content give it much stronger resistance to corrosion in marine and brackish water service.
Can E.J. Basler handle production runs under 100,000 pieces?
Yes. While our high-volume contract manufacturing center is built for runs of 100,000+ pieces, we also accept smaller production volumes when the part fits our process strengths.
Industries
The numerous advantages and benefits of 443 Admiralty Brass make it a preferred material for precision CNC, Swiss, and other machining techniques. E.J. Basler can machine parts, components, and products using brass for virtually any application or industry, including but not limited to the following:
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