Admiralty Brass (UNS C44300) Sheets & Plates to ASTM B171
Admiralty brass (UNS C44300) is an arsenical tin brass with about 71% copper, 28% zinc and 1% tin, plus a small arsenic addition (0.02–0.06%). The tin improves corrosion resistance and the arsenic inhibits dezincification, which is why Admiralty brass is a long-established material for condensers and heat exchangers.
Table of Content
- What is Admiralty Brass Sheets / Plates
- Standard Specification For Admiralty Brass Sheets / Plates
- Types Of Admiralty Brass Sheets / Plates
- Chemical Composition of Admiralty Brass Sheets / Plates
- Mechanical Properties of Admiralty Brass Sheets / Plates
- Available Forms
- Application for Admiralty Brass Sheets / Plates
- Export Destinations for Admiralty Brass Sheets / Plates
Properties and Uses of Admiralty Brass Sheets & Plates
Admiralty brass resists fresh water, brackish water and clean seawater at moderate flow velocities, and has good thermal conductivity and formability for tube expansion into tube sheets.
Where not to use it: Admiralty brass is not recommended for polluted or high-velocity seawater, or for ammonia-bearing service, where stress-corrosion cracking can occur. For those conditions choose aluminium brass, 90/10 cupro-nickel or 70/30 cupro-nickel.
Testing, Documentation and Packaging
Every lot of Admiralty Brass sheets & plates is inspected before dispatch. Typical tests include chemical analysis / PMI, tensile and hardness testing, bend testing, ultrasonic testing of plates where required, and checks of thickness and flatness. Third-party inspection can be arranged on request.
Material is supplied with a mill test certificate to EN 10204 3.1, together with the raw-material report and inspection reports. For export orders it is interleaved with protective paper and packed on fumigated wooden pallets or in wooden cases, with a fumigation certificate included.
Chemical Composition
Mechanical Properties
Available Forms
Applications of Admiralty Brass Sheets & Plates