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The Sunflex Metal management team, have over 35 years of collective experience in the steel industry, and we are one of the largest Copper Nickel 70/30 tube manufacturers in Mumbai, India. Cuni 70/30 Fin tube has a slightly better level of strength than 90/10. 70 30 copper nickel tubing is used in salt water piping, salt water flanges, sea water intakes, valve bodies and pipe fittings. Related specifications of Cu-Ni 70/30 Seamless Tubes are DEF STAN 02-879 Annex B, CW354H, ASTM B151, NES780, CN107, 2.0882, EN 12164, C71500, DGS320, DEF STAN 02-780, CuNi30Mn1Fe, BS2874 and C71520. C71500 Tubes can be welded, fabricated and cold worked, without needing any kind of special material considerations. The most accepted specifications of 70/30 copper nickel tubes are C71500 and CN107.
The Chemical Composition of Cu-Ni 70/30 Tubes is Nickel 30%, Manganese 1.0%, Iron 0.7% and Copper is the remainder. The Ultimate Tensile Strength of Cupro Nickel 70 / 30 Seamless Tube is 310 N/mm². 70/30 copper nickel has an Elongation of 27% and a hardness of 80-120. The best cupro nickel 70/30 tube price can be obtained by doing various searches online, till one gets the best deal. Cupro Nickel 70 / 30 Welded Tubes has very good toughness and strength and it offers high resistance to biofouling. In marine environs, 70/30 copper nickel Heat Exchanger Tubes exhibits very good pitting resistance and corrosion. The Charpy Impact of Cuni 70/30 Round Tube is 107 J (78.9 ft-lb). The corrosion resistance of Cupro nickel 70/30 condenser tubes has been noticed to be better in polluted seawater and in high-velocity waters. The applications of 70/30 Copper Nickel Seamless Tubing are many and these include their use in salt water piping and pipe fittings, pump bodies and parts, welding backing rings, refrigerator and condenser components, water boxes, pipe fittings, valve bodies, propeller sleeves, distiller tubes, weld wire and boiler parts, salt water flanges, evaporator tubes, sea water intakes, flexible metal hose, heat exchangers, cooling plants, etc.
Copper Nickel 70/30 / C71500 Seamless Tubes acc.to ASTM B111 or EN12451
Fixed Lengths: Diameter 9.52 to 60.00mm / Wall Thickness 0.6 to 3.0mm / Length 1 to 20.00 metres
In Coils: Not available
Copper Nickel 70/30 / C71640 Seamless Tubes acc.to ASTM B111 or EN12451
Fixed Lengths: Diameter 9.52 to 60.00mm / Wall Thickness 0.6 to 3.0mm / Length 1 to 20.00 metres
In Coils: Not available
70/30 CuNiFe Tube (BS2871 CN107) also available
| GRADES | 70/30 (COPPER/NICKEL) |
| FORM | SEAMLESS |
| TEMPER | ANNEALED (HARD DRAWN IF REQUIRED) |
| SMALLEST O/D | 0.020" |
| LARGEST O/D | 0.591" |
| WALL THICKNESS RANGE | 0.007" - 0.0118" |
| CUT RANGE | ANY LENGTH NO MATTER HOW SHORT |
| SUPPLIED IN | STRAIGHT LENGTHS OR COILS WHERE APPLICABLE |
| Tube, Condenser | ASME SB111, ASTM B552, B111, MILITARY MIL-T-15005, SAE J463, J461 |
| Tube, Finned | ASME SB359, ASTM B359, MILITARY MIL-T-22214 |
| Tube, Seamless | ASME SB466, ASTM B466, MILITARY MIL-T-16420 |
| Tube, U-Bend | ASME SB395, ASTM B395 |
| Tube, Welded | ASME SB543, ASTM B543 |
| International specifications | ASME, SAE, MIL, QQ, ISO, BS, and JIS. |
|---|---|
| Coppernickel 70/30 Tube Standards | ASTM B 111, B543, B552 ASME SB 111, SB543, SB552 |
| Seamless Tube Size | 3.35 mm OD To 101.6 mm OD, 15 NB to 150 NB IN |
| Welded Tube Size | 6.35 mm OD To 152 mm OD |
| Swg & Bwg | 10 Swg., 12 Swg., 14 Swg., 16 Swg., 18 Swg., 20 Swg. |
| Wall thickness | 0.020" –0.220", (special wall thicknesses available) |
| Length | Single Random, Double Random, Standard & Cut length |
| Finish | Polished, AP (Annealed & Pickled), BA (Bright & Annealed), MF |
| Form | Round, Coil, Square, Rectangular, Boiler, Hydraulic, Straight or ‘U’ bent Tubes, Hollow, LSAW Tubes Etc. |
| Type | Seamless, ERW, EFW, Welded, Fabricated |
| End | Plain End, Beveled End, Treaded |
| Marking | All 70/30 Copper Nickel tubes are marked as follows: Standard, Grade, OD, Thickness, Length, Heat No. (Or according to the customer’s request.) |
| Application | Oil Tube, Gas Tube, Fluid Tube, Boiler and Heatexchanger |
| Value Added Service | Draw & Expansion as per required Size & Length, Polish (Electro & Commercial) Annealed & Pickled Bending, Machining Etc. |
| Specialize in | Copper Nickel 70/30 Capillary Tube & Other Odd Size Copper Nickel 70/30 Heat Exchanger & Condenser Tubes |
| Test Certificate | Manufacturer Test Certificate Laboratory Test Certificate from Govt. Approved Lab. Under Third Party Inspection |
| We can also cut, thread, and groove 70/30 Cupro Nickel Tubes to meet your specifications | |
| Wall | Sizes ( O.D.) |
|---|---|
| .010 | 1/16" , 1/8" , 3/16" |
| .020 | 1/16" , 1/8" , 3/16" , 1/4" , 5/16" , 3/8" |
| .012 | 1/8" |
| .016 | 1/8" , 3/16" |
| .028 | 1/8" , 3/16" , 1/4" , 5/16" , 3/8" , 1/2" , 3/4" , 1" , 1 1/2" , 2" |
| .035 | 1/8" , 3/16" , 1/4" , 5/16" , 3/8" , 7/16" , 1/2" , 16" , 5/8" , 3/4" , 7/8" , 1" , 1 1/4" , 1 1/2" , 1 5/8" , 2" , 2 1/4" |
| .049 | 3/16" , 1/4" , 5/16" , 3/8" , 1/2" , 16" , 5/8" , 3/4" , 7/8" , 1" , 1 1/8" , 1 1/4" , 1 1/2" , 1 5/8" , 2" , 2 1/4" |
| .065 | 1/4" , 5/16" , 3/8" , 1/2" , 16" , 5/8" , 3/4" , 7/8" , 1" , 1 1/4" , 1 1/2" , 1 5/8" , 1 3/4" , 2" , 2 1/2" , 3" |
| .083 | 1/4" , 3/8" , 1/2" , 5/8" , 3/4" , 7/8" , 1" , 1 1/4" , 1 1/2" , 1 5/8" , 1 7/8" , 2" , 2 1/2" ,3" |
| .095 | 1/2" , 5/8" , 1" , 1 1/4" , 1 1/2" , 2" |
| .109 | 1/2" , 3/4" , 1" , 1 1/4" , 1 1/2" , 2" |
| .120 | 1/2" , 5/8" , 3/4" , 7/8" , 1" , 1 1/4" , 1 1/2" , 2" , 2 1/4" , 2 1/2" , 3" |
| .125 | 3/4" , 1" , 1 1/4" , 1 1/2" , 2" , 3" , 3 1/4" |
| .134 | 1" |
| .250 | 3" |
| .375 | 3 1/2" |
US $10.00-$40.00 / Kilogram
Above is an approx price, please contact for final price of Copper Nickel 70/30 Tube
| Cu-Ni 70/30 | Cu | Pb | Mn | Fe | Zn | Ni |
| 65.0 min | 0.05 max | 1.0 max | 0.4-1.0 | 1 max | 29-33 max |
| Density | Melting Point | Yield Strength (0.2%Offset) | Tensile Strength | Elongation |
| 0.323 lb/in3 at 68 F | 2260 F | 20000 psi | 50000 Psi | 30 % |
| STANDARD | UNS | WERKSTOFF NR. |
| Cupro Nickel 70/30 | C71500 | 2.0882 |
| KS D5301 JIS H3300 | C7150T |
| ASTM B111 | C71500 |
| ASTM B466 | C71500 |
| BS2871 {PART2} | CN107 |
| AS1752 | C71500 |
| DIN17664 | CuNi30Mn1FE |
| DIN 86019 WL2.1972 | |
| EEMUA 144 | |
| MIL-T-16420K | 771506 |
| EN12449 | CW354H |
| Cupro Nickel 70/30 condenser coil | Cupro Nickel 70/30 Pancake Coils |
| Copper Nickel 70/30 Finned Tube | Cupro Nickel 70/30 Capillary Tube |
| Cu-Ni 70/30 ‘U’ Shaped tubing | Cu-Ni 70/30 Gas Tube |
| ASTM B111 Cupro Nickel 70/30 seamless tubing | ASME SB111 Cupro Nickel 70/30 Thin Wall tube |
| Copper Nickel 70/30 seamless tube | Cupro Nickel 70/30 Furnace Tube |
| Cuni 70/30 welded tubing | Cu-Ni 70/30 tubes |
| Cupro Nickel 70/30 Heat Exchanger Tubes | Copper Nickel 70/30 boiler tube |
| Cu-Ni 70/30 Square Tube | C71500 Hydraulic tubes |
| Copper Nickel 70/30 Rectangle Tube | Cuni 70/30 tubing |
| Cupro Nickel 70/30 Seamless Tubes | Cupro Nickel 70/30 Round Tube |
| ASTM B111 Cupro Nickel 70/30 Welded Tubes | Cu-Ni 70/30 Seamless Tubing |
| Cu-Ni 70/30 Coiled Tubing | Copper Nickel 70/30 Capillary Tubing |
| Cupro Nickel 70/30 Aerospace tubes | Cuni 70/30 High Pressure Tube |
| Copper Nickel 70/30 Sighting Tube | Cupro Nickel 70/30 Polish Tubes |
| Cu-Ni 70/30 Elliptical and Oval Tubes | Cu-Ni 70/30 Rectangular Tube |
| Cupro Nickel 70/30 Condenser Tubes | ASTM B111 Cupro Nickel 70/30 Aero engine tubes |
| SB111 Cupro Nickel 70/30 straight tube boiler | Cupro Nickel 70/30 furnace tube |
| Cuni 70/30 brake tubing | Cold Drawn Seamless tube |
| Copper Nickel 70/30 Extruded Seamless Tube | Cu-Ni 70/30 Precision tube |
| Cu-Ni 70/30 Tubing bends | Cuni 70/30 Capillary tube |
| Cupro Nickel 70/30 Gas Tube | Cupro Nickel 70/30 Fluid Tube |
| Copper Nickel 70/30 ERW Tubes | Copper Nickel 70/30 EFW Tubes |
| Cu-Ni 70/30 Round Tubes | Cu-Ni 70/30 ERW Tubes |
| ASTM B111 Copper Nickel 70/30 Tube | ASTM B552 Cupro Nickel 70/30 Square Tube (Radius Corners) |
| Cupro Nickel 70/30 Instrumentation Tubes | ASTM B543 Cuni 70/30 protective tubes |
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