C44300 – Admiralty Brass Tubes

Inhibited Admiralty Brass tubes – C44300 – have high corrosion resistance, and primarily used for tubing of steam condensers cooled with fresh, salt, or brackish water. They are also used for heat exchangers in oil refineries, in which the corrosion from sulfur compounds and contaminated water may be very severe. For industrial processes, it is used for feed-water heaters and heat-exchanger equipment.

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

Condenser, Evaporator and Heat Exchanger tubes; Distiller tubing.

Temper

O61 Annealed

Properties *

Metric

English

Density

8.53 g/cc

0.308 lb/in³

Tensile Strength, min.

310 MPa

45 ksi

Yield Strength, min.

105 MPa

15 ksi

CTE, linear

20.2 10-6/°C @ 20.0 – 300 °C

11.2 10-6/°F @ 70.0 – 570 °F

Specific Heat Capacity

0.09 cal/g-°C @ 20ºC

0.09 BTU/lb-°F @ 70ºF

Thermal Conductivity

109 W/m-K @ 20.0 °C

64 BTU/ft2/ft/h/°F @ 70.0 °F

Melting Point

899 ~ 938 °C

1650 ~ 1720 °F

* The information provided in this page includes typical values “only” for general reference and information. It is not intended for specification, design or engineering purposes.