ASME SB111 / ASTM B111 C71640 (CuNi 70/30, CW353H),Copper Nickel Alloy Steel Tube / Condenser Tube
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C70600 (C706) & C71500 (C715), Copper nickel offers excellent corrosion resistance, especially in marine salt water environments. The main, wrought copper-nickel alloys chosen for sea water service contain 10 or 30 percent nickel. They also have important additions of iron and manganese which are necessary to maintain good corrosion resistance. Some of the primary uses for C706 include copper nickel fittings (CuNi Fittings) as well as condensers and exchanger shells.
Standard: ASTM B111 / B111M.
Description Name: ASTM B111 copper tubes, C44300 copper tubes, C44300 Admiralty brass tubes, C44300 admiralty brass pipes, C68700 copper tubes, C68700 aluminum brass tubes, C68700 aluminum brass pipes, C70600 Copper tubes, C70600 brass pipes, C70400 copper tubes, C70400 Brass tubes and pipes, C70400 Copper-Nickel tubes and pipes. C71500 copper tubes, C71500 Brass tubes and pipes, C71500 Copper-Nickel tubes and pipes, C71640 copper tubes, C71640 Brass tubes and pipes, C71640 Copper-Nickel tubes and pipes.
Size: 6mm to 100 mm.
Wall Thickness: 0.5 to 25mm.
Shape: Round.
Length: Single random length/ Double random length or as customer’s actual request.
Grade: C44300, C68700, C70400, C70600, C71500, C71640.
| Designation | Chemical Composition % |
| Cu | Sn | Al | As | Ni | Fe | Mn | Pb max. | Zn |
| C44300 | 70.0-73.0 | 0.9-1.2 | – | 0.02-0.06 | – | 0.06 max | – | 0.07 | Rem |
| C68700 | 76.0-79.0 | – | 1.8-2.5 | 0.02-0.06 | – | 0.06 max | – | 0.07 | Rem |
| C70400 | Rem | – | – | – | 4.8-6.2 | 1.3-1.7 | 0.3-0.8 | 0.05 | 1.0max |
| C70600 | Rem | – | – | – | 9.0-11.0 | 1.0-1.8 | 1.0max | 0.05 | 1.0max |
| C71500 | Rem | – | – | – | 29.0-33.0 | 0.4-1.0 | 1.0max | 0.05 | 1.0max |
| C71640 | Rem | – | – | – | 29.0-32.0 | 1.7-2.3 | 1.5-2.5 | 0.05 | 1.0max |
The world standard Grade equivalent to ASTM B111:
| Material Designation | Corresponding Material Symbol |
| GB/T8890 | ASTM B111 | BS2871 | JIS H3300 | DIN1785 |
| Copper-Nickel | BFe10-1-1 | C70600 | CN102 | C7060 | CuNi10Fe1Mn |
| BFe30-1-1 | C71500 | CN107 | C7150 | CuNi30Mn1Fe |
| (BFe30-2-2) | C71640 | CN108 | C7164 | CuNi30Fe2Mn2 |
| (BFe5-1.5-0.5) | C70400 | – | – | – |
| B7 | – | – | – | – |
| Aluminums Brass | HAL77-2 | C68700 | CZ110 | C6870 | CuZn20Al2 |
| Admiralty Brass | HSn70-1 | C44300 | CZ111 | C4430 | CuZn28Sn1 |
| Boric Brass | Hsn70-18 | – | – | – | – |
| HSn70-1 AB | – | – | – | – |
| Arsenical Brass | H68A | – | CZ126 | – | – |
| Brass Tube | H65/H63 | C28000/C27200 | CZ108 | C2800/C2700 | CuZn36/CuZn37 |
Tensile Requirements:
| Copper or Copper Alloy UNS NO. | Temper Designation | Tensile Strength | Yield Strength |
| Standard | Former | min ksi | min ksi |
| C44300 | O61 | annealed | 45 | 15 |
| C68700 | O61 | annealed | 50 | 18 |
| C70400 | H55 | light-drawn | 38 | 30 |
| C70600 | H55 | light-drawn | 45 | 15 |
| C71500 | O61 | annealed | 52 | 18 |
| C71640 | O61 | annealed | 63 | 25 |
Product Tags:
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ASME SB111 / ASTM B111 C71640 (CuNi 70/30, CW353H),Copper Nickel Alloy Steel Tube / Condenser Tube Images
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