C44300 – Admiralty brass – CuZn28Sn1

The anti-corrosive properties of Admiralty brass are well-suited to use with contaminated water.

Inhibited Admiralty brass tubes (C44300) offer effective corrosion resistance, making them ideal for use in steam condensers cooled with fresh, salt, or brackish water. These tubes are also widely used in heat exchangers within oil refineries, where they withstand severe corrosion from sulfur compounds and contaminated water.

In power plants, Admiralty brass tubes are also utilized in feed-water heaters to preheat the water before entering the boiler.

UNS no.

C44300 – BSI No. CZ111 ISO name CuZn28Sn1

Chemical comp. (%)

Cu 70 ~ 73 / Sn 0.9 ~ 1.2 / Pb 0.07 / Fe 0.06 max / Zn rem / As 0.02 ~ 0.06

ASTM spec.

B 111, B 395

ASME spec.

SB 111, SB 395

Applications

Heat exchangers, condensers, and cooling systems; desalination equipment.

Temper

O61 annealed

Properties *

Metric

English

Density

8.53 g/cc

0.323 lb/in³

Tensile strength

8.94 g/cm³

0.323 lb/in³

Yield strength

105 MPa

15 ksi

CTE, linear

20.2 10-6/°C @ 20 – 300°C

11.2 10-6/°F @ 70 – 570°F

Specific heat capacity

0.09 cal/g-°C @ 20ºC

0.09 BTU/lb-°F @ 70ºF

Thermal conductivity

109 W/m-K @ 20°C

64 BTU/ft2/ft/h/°F @ 70°F

Melting point

899 ~ 938°C

1650 ~ 1720°F

* The information provided on this page includes typical values which are only for general reference and information. These values are not intended for exact specification, design or engineering purposes.