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Cupronickel Cupro Nickel Tubes 90/10
Cupro Nickel Tubes 70/30 Lanco Pipes & Fittings supplies smooth bore 70/30 cupro nickel tubes of the highest standard, rigorously tested to make sure they are suitable for the exacting requirement of condensers and heat exchangers. These cupro nickel tubes have the highest resistance to stress-corrosion cracking. These tubes are available in a variety of outside diameter, wall thickness and tempers to meet the requirement. Superior dimensional control with specified mechanical properties offers trouble free performance and cost saving.This form of cupro nickel tube gives the best service life under the most adverse conditions because of improved corrosion resistance and almost insensitive to stress corrosion. These cupro nickel tubes are used in heat exchangers where severe erosion and corrosion have been experienced, especially at elevated temperatures, high velocities and extreme turbulence of the circulating media. These cupro nickel tubes have an important bearing not only on the performance of heat exchangers but also on the cost and delivery cycle time of the condenser and heat exchangers where they are used.
Dimensional Range
These Cupro Nickel tubes & pipes for Marine application are very important for all Industrial fields. The company has experience in these areas and is able to supply these tubes in accordance with most international standards and special customer requirements. Chemical Composition |
This form of cupro nickel tubes produced by Tube Tech possess excellent resistance to corrosion by sea water as well as high resistance to erosion corrosion and air-impingement attack. The addition of iron results in 90/10 performing as good as 70/30 in salt water service heat exchangers. These tubes have good strength and ductility at ordinary temperatures and relatively high strength and other mechanical properties at elevated temperatures.
Curpo Nickel Tubes 95/5 & 90/10 for Marine Application| Classi -fication |
Class | Chemical Composition (%) | Related Standards | |||||||||||||||
| Cu | Zn | Pb | Fe | P | Sn | Ni | Mn | Al | As | Other | ISS | KS | JIS | ASTM | BS | DIN | ||
| Cu-Ni Tube | 1 | rem. | 1.00 max | 0.05 max | 1.3-1.7 | - | - | 4.8-6.2 | 0.3-0.8 | - | - | IS:15 45 CuNi5 Fe |
D 5301 C7040 |
CuNi 95+5 7040 |
B 111 C70400 |
2871 CN101 |
1785 CuNi 5Fe |
|
| 2 | rem. | 1.00 max | 0.05 max | 1.0-1.8 | - | - | 9.0-11.0 | 1.0-ma | - | - | IS:15 45 CuNi 10Fe1 |
C 7060 | CuNi 90:10 C 7060 |
C 70600 |
CN102 | CuNi 10Fe |
||
Mechanical Properties
| Classi- fication |
Temper | Designation | Cu Alloy UNS No. |
Tensile Test | ||||
| Outside diameter (mm) | Thickness (mm) | Tensile Strength Kgf/mm2 | Elongation (%) | Yield Strength (kg/mm2) | ||||
| Copper Nickel Tube |
061 | Annealed | C70400 | 5-250mm | 0.8-10 | 27(260) | 9(85) | |
| H55 | Light Drawn | C70400 | 5-250mm | 0.8-10 | 28(275) | - | 21(205) | |
| 061 | Annealed | C70600 | 5-250mm | 0.8-10 | 28(275) | - | 11(105) | |
| H55 | Light Drawn | C70600 | 5-250mm | 0.8-10 | 32(310) | 25(240) | ||
Cupro Nickel Tubes 90/10 for Heat Exchangers & Condensers
These Cupro Nickel tubes & pipes for Heat Exchangers & Condensers are very important for all Industrial fields. The company has experience in these areas and is able to supply these tubes in accordance with most international standards and special customer requirements.
Cupro Nickel Tubes 90/10 for Automobile Industries
The Move To Copper-Nickel Tubing
Copper had been proved since the early days to have many good attributes. It was easy to bend and had very high corrosion resistance, but there was concern about its low corrosion-fatigue strength. When copper-nickel was introduced, it displayed corrosion resistance similar to copper, higher general strength and better fatigue strength. Good formability allows ease of flaring and bending, and although the metal cost is greater than that of steel alternatives, copper-nickel is very attractive in view of its extra life, trouble-free installation and safety/reliability characteristics.
Properties of Copper-Nickel Brake Tubing
The copper-nickel alloy used for brake tubing typically contains 10% nickel, with iron and manganese additions of 1.4% and 0.8% respectively. The product conforms to ASTM B466 (American Society for Testing and Materials), which specifies dimensions, tensile strength and yield strength. Formability and internal cleanliness conform to specifications SAE J527, ASTM A254 and SMMT C5B (Society of Motor Manufacturers and Traders). Also, the alloy meets the requirements for pressure containment, fabrication and corrosion resistance for ISO 4038 (International Standards Organization) and SAE J1047.
| Dimension Tolerance | |||||
| Material | Ultimate Tensile Strength1000 psi (MPa) |
Yield Strength 0.5% Ext.under Load 1000 psi (MPa) |
Yelongation % in 2 in. |
Fatigue Strength (10x7 cycles) 1000 psi (MPa) |
Burst Pressure* 1000 psi (MPa) |
| Copper-brazed Steel | 48-55 (0.330-0.380) | 28-34 (0.190-0.235) | 30-40 | 30 (0.210) | 19.5 (0.135) |
| C12200-Phosphorus deoxidized Copper |
32-38 (0.220-0.265) | 10-14 (0.070-0.100) | 45-60 | 10 (0.070) | 12 (0.083) |
| C70600-Copper Nickel 90-10 | 48-54 (0.330-0.370) | 16-22 (0.110-0.150) | 40-55 | 15 (0.100) | 19 (0.130) |
Alloy C70600 is normally supplied as redrawn tubing in the annealed condition. The combination of strength and good ductility give excellent formability.
As copper-nickel is softer than steel, it was first feared that fretting might be a problem. Experience has shown this is not the case.
Corrosion Resistance
For many years prior to its application as a brake tubing material, alloy C70600 had been used in ships, power station condensers and hydraulic lines on tankers, and had displayed excellent resistance to saline conditions. Early tests revealed that copper-nickel has almost the same resistance to burst pressure as steel. In testing, however, when exposed to salt spray over 180 days, steel's burst strength decreases significantly. The copper alloy remains consistently resistant.
For tubes covered with a moist, salty mudpack for six months, brazed steel was severely corroded resulting in perforation of the tubing wall; whereas, only superficial general corrosion was found on the copper-nickel tubing. ISO 4038 and SAE J1047 include a corrosion resistance requirement referring to ISO 3768 asking for a minimum burst pressure of 110 MPa after 96 hours in neutral salt spray. Swedish requirements include a resistance at least equal to 25ยต of zinc. In all cases alloy C70600 easily exceeds the required corrosion resistance.
Copper-nickel brake tubing provides superior reliability and assures both manufacturers and vehicle owners improved durability for effective long-life functioning of the brake system.
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Cupro Nickel Pancake Coils
Copper-nickel brake tubing provides superior reliability and assures both manufacturers and vehicle owners improved durability for effective long-life functioning of the brake system.Coils Available in 5 mtr, 10 mtr & 15mtrs.
Sheth Haji Sabu Siddhiq Bldg.,1st Khetwadi,
3rd Floor, Room No- 63, mumbai-400004.