Admiralty stainless steel tube heat exchanger BS 2871 CZ111 EN CW706R OD 19.05 x 1.65MM
Admiralty stainless steel tube heat exchanger BS 2871 CZ111 EN CW706R OD 19.05 x 1.65MM
Seamless Admiralty Brass Tube 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.
Admiralty brass tube, CZ111, is a Copper Zinc Alloy and constitutes of 30% zinc and 1% tin. Admiralty brass tubes are renowned for their superior corrosion and erosion resistance.
Admiralty Brass Tubes are used in many different applications including; air coolers, evaporators, heaters, vent condensers, condensate coolers, water heaters, generators, ship-building, power plants and desalinations plants.
The most popular specifications in Europe and America are CZ111, CW706R and C44300. These Specifications are most commonly used within the Shipbuilding and Marine sectors.
UNS Designation Number: UNS C44300.
Nominal Chemicals: Copper 71%, Zinc 27.96%, Tin 1.00%, Arsenic 0.04%.
Average Mechanical Properties: Tensile 52,000 psi, Yield 20,000 psi.
Specifications: ASTM B 111, Temper 061 (Annealed).
Seamless Admiralty brass tube is a standard condenser and heat exchanger tube, offering
good corrosion resistance in fresh and salt water (at moderate velocities) and exceptional heat trans fer characteristics.
Technical Details:
| Chemical Composition (%max., unless shown as range or min.) |
||||||
| Cu | As | Fe | Pb | Sn | Zn | |
| Min./Max. | 70.0-73.0 | .02-.06 | .06 | .07 | .8-1.2 | Rem. |
| Nominal | 71.0 | .04 | - | - | 1.0 | 28.0 |
| Mechnical Properties | ||
| 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 |
| 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 |
Admiralty Brass Tube Applications:
1. Evaporator Tube
2. Heat Exchanger Tube
3. Condenser Tube
4. Refrigeration Tube
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