ASTM B111 UNS C68700 Seamless Aluminum Brass Tubes
EN 12451 – CuZn20AI2As Al Brass Tubes JIS H6870
We supply high quality ASTM B111 C68700 Aluminum Brass tube which is widely used in applications of air conditioner, refrigeration, heat exchanger, petroleum industry, power station etc.
ASTM B111 C68700 Aluminum Brass tube
C68700 has especially good corrosion resistance properties in sea water. both C44300 & C68700 have good corrosion resistance. C68700 annealed in O61 Temper. Tensile strength minimum in 345Mpa, Yield Strength minimum in 125Mpa.
Aluminum brass C68700, also known as aluminum bronze C68700, is a specific type of aluminum brass alloy with distinctive properties and applications
C68700 density in 8.33g/cm3, 0.301lb/in.3
Typical Application of C68700 Aluminum Brass
- a: Condenser Tube, Evaporator Tubes, Ferrules, Distiller Tubes, Heat Exchanger Tubes
- C68700 aluminium brass tubes are widely used in “Seawater desalting plants”
ASTM B111 C68700 Chemical Composition
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We can supply tubes in Copper and Copper Alloys for many applications
- Seamless tubes for heat exchanger and condensers
- Seamless copper tubes for water and gas in sanitary and heating applications
- Seamless copper tubes for air conditioning and refrigeration
- Seamless round tubes for general purpose
Non-standard products could be supplied on customer’s request.
C68700 Advantage
- Corrosion Resistance: Aluminum brass C68700 exhibits excellent corrosion resistance, particularly in marine and seawater environments. The addition of aluminum and other alloying elements forms a protective oxide layer on the surface, providing effective protection against corrosion and erosion.
- High Strength: C68700 alloy offers high strength and hardness, making it suitable for structural applications requiring robustness and durability. It can withstand mechanical stresses and loads encountered in demanding environments without undergoing deformation or failure.
- Thermal Conductivity: Aluminum brass C68700 possesses good thermal conductivity, allowing for efficient heat transfer and dissipation. This property is advantageous in heat exchangers, condensers, and other thermal management applications where effective heat exchange is essential.
- Electrical Conductivity: Despite the addition of alloying elements, aluminum brass C68700 maintains good electrical conductivity. It is utilized in electrical and electronic components requiring reliable conductivity, such as connectors, terminals, and conductive fittings.
- Machinability: C68700 alloy is relatively easy to machine and fabricate using standard machining techniques, including cutting, drilling, milling, and welding. Its machinability facilitates the production of intricate components and structures with tight tolerances.
- Wear Resistance: Due to its high strength and hardness, aluminum brass C68700 exhibits excellent wear resistance, making it suitable for applications subject to abrasion and wear. It maintains its dimensional stability and surface integrity even under harsh operating conditions.
| 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 |
ASTM B111 C68700 Aluminum Brass “Arsenical” UNS CDA101, ASTM B111, ASTM B395, ASTM B187, ASTM B152.
C68700 has especially good corrosion resistance properties in sea water. C44300 and C68700 have good corrosion resistance. C68700 annealed in O61 Temper. Tensile strength minimum in 345Mpa, Yield Strength minimum in 125Mpa.
C68700 density in 8.33g/cm3, 0.301lb/in.3
Typical Application of C68700 Aluminum Brass “Arsenical”
- Industrial: Condenser Tube, Evaporator Tubes, Ferrules, Distiller Tubes, Heat Exchanger Tubes
- C68700 aluminium brass tubes are widely used in “Seawater desalting plants”
ASTM B111 C68700 Chemical Composition
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ASTM B111 C68700 Properties
| 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 |
HEAT EXCHANGER AND CONDENSERS COPPER ALLOY TUBES
ASTM B-111 C71500 70/30 Cu-Ni TUBES
ASTM B-111 C44300 70/29/1 Cu-Zn-Ti TUBES
ASTM B-111 C70600 90/10 Cu-Ni TUBES
ASTM B-111 C68700 70/29/1 Cu-Al-Zn TUBES
ASTM B-680 C12200 99/0.5/0.5 Cu-P-Ni TUBES
| Admiralty C44300 | Highly resistant to general corrosion – where pressures, velocities and temperatures are moderate. |
| Alluminium Brass C68700 | These tubes are especially adapted to resist corrosion by both salt and brackish waters. |
| Copper Nickel 90/10 C70600 | This alloy is highly resistant to corrosion by turbulently flowing sea water indicate it to be an excellent condenser tube alloy for salt water use. |
| Copper Nickel 80/20 C71000 | This alloy has intermediate properties between those of 10% and 30% copper nickel. Tubes of this alloy have found widest use in feedwater heaters and evaporators. |
| Copper Nickel 70/30 C71500 | Condenser tubes of this alloy are giving long and dependable service at sea. It is also highly satisfactory for tubes in evaporators, condensers, and superheaters. This alloy is particularly desirable where high temperatures are encountered. |
SEAMLESS COPPER ALLOY TUBE HEAT EXCHANGER
SEAMLESS COPPER ALLOY CONDENSER TUBES
INTERNATIONAL STANDARDS
| Material | European | American |
|---|---|---|
| Copper | EN 12449 – Cu DHP | ASTM B111 / ASTM B 75 C12200 |
| Admiralty Brass | EN 12451 – CuZn28Sn1As | ASTM B111 C44300 |
| Aluminum Brass | EN 12451 – CuZn20AI2As | ASTM B111 C68700 |
| 90/10 Copper Nickel | EN 12451 – CuNi10Fe1Mn | ASTM B111 C70600 |
| 70/30 Copper Nickel | EN 12451 – CuNi30Fe1Mn | ASTM B111 C71500 |
How to order the ASTM B111 C68700 tube?
Example#1, ASTM B111 C68700 Seamless tube, 25.4 x 0.7 (AVG.) x 3500mm
