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Admiralty Brass Tubes – Supplier, Stockist
and Exporter in Mumbai, India

Admiralty Brass (UNS C44300) Tubes to ASTM B111

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



Properties and Uses of Admiralty Brass Tubes

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 tubes is inspected before dispatch. Typical tests include chemical analysis / PMI, tensile and hardness testing, flaring and flattening tests, hydrostatic or eddy-current testing, and dimensional inspection. 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 wrapped in poly bags and packed in fumigated wooden cases, crates or pallets, with a fumigation certificate included.


Admiralty Brass Tubes

Standard Specification for Admiralty Brass Tubes

Standard

ASTM B111/B111M, BS2871, JIS H3300, DIN1785

Size

8mm to 76mm

Wall Thickness

0.5 to 6mm

Outer Diameter

2mm~914mm

Thickness

0.2mm~120mm

Length

1m, 2m, 3m, 4m, 6m, or as required, 1m, 2m, 3m, or as required

Admiralty Brass Tubing Sizes

3.35 mm OD To 101.6 mm OD, 15 NB to 150 NB IN

Wall Thickness

0.2mm~120mm

Admiralty Brass tube Length

Single random length/ Double random length or as customer’s actual request

Other Types of Admiralty Brass Tubes

Admiralty Brass Seamless Tubes

Admiralty Brass Seamless Tubes

Seamless tubes for pressure and heat-transfer service, supplied to ASTM B111.
Admiralty Brass Welded Tubes

Admiralty Brass Welded Tubes

Welded tubes, an economical option for larger sizes and lower-pressure lines, supplied to the customer's specification.

Chemical Composition

GradeCuSnAsFePbZn
UNS C4430070.0 – 73.00.8 – 1.20.02 – 0.060.06 max0.07 maxRem.

Mechanical Properties

Density Melting Point Tensile Strength Yield Strength (0.2%Offset) Elongation
8.53 g/cm3 899 ~ 938 °C 310 MPa 105 MPa 30 %

Available Forms


Seamless tubesWelded tubes
Round tubesSquare tubes
Thin-wall tubesThick-wall tubes
U-bent tubesCut-to-length tubes

Applications of Admiralty Brass Tubes


  •   Power-station surface condensers
  •   Shell-and-tube heat exchangers
  •   Evaporators and distillers
  •   Feedwater heaters
  •   Oil and lube coolers
  •   Desalination plants
  •   Sugar and chemical process heat exchangers
  •   Condenser tube sheets and baffles

Export Destinations For Admiralty Brass Tubes


Bahrain, Sri Lanka, Estonia, France, Chile, Hong Kong, Iraq, Israel, Iran, Mexico, Trinidad & Tobago, Singapore, United Kingdom, Kenya, Poland, Brazil, United States, Denmark, New Zealand, Italy, Argentina, Portugal, Czech Republic, Iran, Austria, Belarus, Russia, Tunisia, Angola, China, Malaysia, Chile, Lithuania, Australia, Azerbaijan, Kazakhstan, Libya, Japan, Saudi Arabia, Switzerland, Vietnam, Ukraine, Norway, Bulgaria, Gabon, Philippines, Thailand, Bangladesh, Pakistan, Serbia, Costa Rica, Peru, Poland, Finland, Jordan, Croatia, Algeria, Belgium, Oman, Ghana, Mongolia, United Arab Emirates, Ecuador, Colombia, Indonesia, Greece, Netherlands, Yemen, South Korea, Bolivia, Kuwait, Mexico, Lebanon, Nigeria, Egypt, Afghanistan, Morocco, Hungary, Taiwan, Bhutan, Canada, Slovakia, Romania, Qatar, Spain, Nigeria, Sweden, Venezuela, South Africa, Turkey.