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UNS C44300
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Copper Alloy ASTM B171 UNS C44300 Tube Sheets Tubesheets Baffles Tube Plates Support Plates ASTM B171 UNS C44300 Forging Forged Tubesheets discs disks flanges blocks round bars hollow bars ASTM B171 UNS C44300 Forged forging rings seamless rolled rings forged forging Sleeves Bushes Bushing Pipes Piping tube tubings barrels Casing Cases Shells cylinders hubs housings,ASTM B171 UNS C44300 FRONT REAR Fixed STATIONARY Floating Cladding Clad Cladded Welding Welded Overlay Overlayed Coated Tube Sheets TUBESHEET from china


C44300 - has good corrosion resistance and is specially used for tubing of steam condensers cooled with fresh, salt or brackish water. Admiralty metal tubes are also used for heat exchangers in oil refineries, in which corrosion from sulfur compounds and contaminated water may be very severe, and for feed-water heaters and heat-exchanger equipment as well as other industrial processes.

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
ApplicationsCondenser, Evaporator and Heat Exchanger tubes; Distiller tubing.
TemperO61 Annealed

Properties *MetricEnglish
Density8.53 g/cc0.308 lb/in³
Tensile Strength, min.310 MPa45 ksi
Yield Strength, min.105 MPa15 ksi
CTE, linear20.2 10-6/°C @ 20.0 – 300 °C11.2 10-6/°F @ 70.0 – 570 °F
Specific Heat Capacity0.09 cal/g-°C @ 20ºC0.09 BTU/lb-°F @ 70ºF
Thermal Conductivity109 W/m-K @ 20.0 °C64 BTU/ft2/ft/h/°F @ 70.0 °F
Melting Point899 ~ 938 °C1650 ~ 1720 °F