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Product
Inhibited Aluminum Brass tubes – C68700 - resists the action of high-velocity salt and blackish water and is commonly used for condenser tubes. The main characteristic of C68700 is its high resistance to impingement attack. Tubes of this alloys are recommended for use in Marine and Land Power Stations, in which cooling water velocities are high.
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Product Introduction
UNS No. | C68700 – BSI No. CZ110 – ISO Name CuZn22AI2 |
Chemical Comp. (%) | Cu 76 ~ 79 / Al 1.8 ~ 2.5 / 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 | 8.33 g/cc | 0.301 lb/in³ |
Tensile Strength, min. | 345 MPa | 50 ksi |
Yield Strength, min. | 125 MPa | 18 ksi |
CTE, linear | 18.5 10-6/°C @ 20.0 – 300 °C | 10.3 10-6/°F @ 70.0 – 570 °F |
Specific Heat Capacity | 0.09 cal/g-°C @ 20ºC | 0.09 BTU/lb-°F @ 70ºF |
Thermal Conductivity | 100.4 W/m-K @ 20.0 °C | 58 BTU/ft2/ft/h/°F @ 70.0 °F |
Melting Point | 932 ~ 971 °C | 1710 ~ 1780 °F |
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