| Material: | C70600 | Fin Type: | Low Fin Tube |
|---|---|---|---|
| NDT: | HT/ECT | Application: | Heat Exchanger |
| High Light: | Low Finned Copper Tubing， Low Fin Heat Exchanger Tube， O61 Copper Nickel Alloy Pipe | ||
ASTM B111 C70600 O61 LOW FIN TUBE COPPER NICKEL ALLOY CUNI 90/10
ASTM B111 C70600 O61 refers to the standard specification for seamless copper-nickel alloy condenser and heat exchanger tubes. The alloy C70600， also known as CuNi 90/10， is composed of 90% copper and 10% nickel. It is often used in applications requiring good corrosion resistance and thermal conductivity， such as marine engineering， offshore oil and gas platforms， and power plants. The "O61" designation refers to an annealed condition， indicating that the tubes are heat treated to improve their mechanical properties.
Low finned tubes basically consist of a metal tube. This tube can be made of different types of metals. Specifically， for low finned tubes， the low fins offer the advantage that the outer surface of the metal tube is increased. This is reflected in the fact that the heat exchanger has a higher capacity than models with bare tubes.The low finned tubes have an extended surface on the outside of the tube increasing the efficiency of the heat exchanger. The low finned tubes are an indispensable part in their production. We are happy to tell you more about it.
According to user needs， we can produce all kinds of steel strip winding finned tube and steel aluminum composite finned tube. As the heat transfer element finned tube works long-term in high temperature and flue gas condition， such as finned tube in the boiler heat exchanger which use conditions are as high temperature and high pressure and corrosive atmosphere， should have a high performance metrics and they are as follows:Anti-corrosion ，Anti-wear，lower contact resistance ，Higher Stability，Anti-dust stratification.
This intergral low finned tubes are widely used as heat transfer tubes because of their large external surface area and high heat transfer performance compared with a plain tube. This enhanced surface fin tubes allow our customers to either reduce the size of the heat exchanger or increase its perfornance. The low finned tubes we manufacture are designed to meet the most efficient and durable thermal performance for the most challenging situations and long lasting service life.
| Temper | Tensile Str. | Yield Str. | Elong. | Rockwell | |||
| B | C | F | 30T | ||||
| H55 | 414MPa (60ksi) | 393MPa (57ksi) | 10% | 72 | – | 100 | 70 |
| OS025 | 303MPa (44ksi) | 110MPa (16ksi) | 42% | 15 | – | 65 | 26 |
Chemical composition of UNS C70600
| Elements | Content (%) |
| Nickel， Ni | 9.0-11.0 |
| Iron， Fe | 1.0-1.8 |
| Zinc， Zn | 1.0 |
| Manganese， Mn | 1.0 |
| Lead， Pb | 0.05 |
| Copper， Cu | Remainder |
Equivalent materials to UNS C70600
| ASME SB111 | ASME SB171 | ASME SB359 | ASME SB466 | ASME SB467 |
| ASME SB395 | ASME SB543 | ASTM B111 | ASTM B151 | ASTM B122 |
| ASTM B171 | ASTM B359 | ASTM B395 | ASTM B432 | ASTM B466 |
| ASTM B469 | ASTM B543 | ASTM B608 | DIN 2.0872 | MIL C-15726 |
| MIL T-15005 | MIL T-16420 | MIL T-22214 | SAE J461 | SAE J463 |
Low fin tubes:
