ASTM B466 Seamless Copper-Nickel Pipe and Tube
- Grade: UNS C44300, C68700, C70400, C70620, C71000, C71500, C71520
- Outside Diameter (OD): 10.3-168mm
- Wall Thickness (WT): 1.47-11.1mm
Features
ASTM B466/B466M Seamless Copper-Nickel Pipe and Tube
Chemical Composition (wt.%) of ASTM B466 Seamless Copper-Nickel Pipe and Tube
| Alloy (UNS No.) | Cu+Ag (min) | Ni+Co | Fe | Mn | Zn (max) | Pb (max) | Other Named Elements |
| C70400 | Remainder | 4.8-6.2 | 1.3-1.7 | 1.0 max | 1.0 max | 0.05 | 0.30-0.8 S |
| C70600, C70620 | Remainder | 9.0-11.0 | 1.0-1.8 | 1.0 max | 1.0 max | 0.05 | – |
| C71000 | Remainder | 19.0-23.0 | 0.5-1.0 | 1.0 max | 1.0 max | 0.05 | – |
| C71500, C71520 | Remainder | 29.0-33.0 | 0.40-1.0 | 1.0 max | 1.0 max | 0.05 | – |
| C72200 | Remainder | 15.0-18.0 | 0.50-1.0 | 1.0 max | 1.0 max | 0.05 | 0.02-0.06 P |
Mechanical Properties of ASTM B466 Seamless Copper-Nickel Pipe and Tube
Temper: O60 (Soft Anneal)
| Alloy (UNS No.) | Tensile Strength (min) | Yield Strength (min) | Rockwell Hardness (30T) |
| C70400 | 37 ksi (255 MPa) | 12 ksi (85 MPa) | 45 max |
| C70600, C70620 | 38 ksi (260 MPa) | 13 ksi (90 MPa) | 45 max |
| C71000 | 45 ksi (310 MPa) | 16 ksi (110 MPa) | 48 max |
| C71500, C71520 | 52 ksi (345 MPa) | 18 ksi (125 MPa) | 51 max |
| C72200 | 40 ksi (275 MPa) | 14 ksi (95 MPa) | 45 max |
Tempers: H55 (Light Drawn), H80 (Hard Drawn), HE80 (Hard Drawn and End Annealed)
Mechanical properties for these tempers vary by alloy and dimensions. Specific mechanical property requirements for products in the H80 temper apply only to certain sizes and should be established by agreement between the manufacturer and purchaser for other sizes.
Technical Specifications
| Specification | Value |
| Standard | ASTM B466/B466M Seamless Copper-Nickel Pipe and Tube |
| Grade | UNS C70400, C70600 (CDA 706, 90-10 Cupronickel, CuNi 90/10, EN CW352H), C70620, C71000, C71500 (CDA 715, 70-30 Cupronickel, CuNi 70/30, EN CW354H), C71520, and C72200. |
| Manufacturing Process | Hot Extrusion, Piercing, and Subsequent Cold Working |
| Seam Type | Seamless |
| Pipe Size | Outside Diameter (OD) Range: NPS 1/8″ -6″, Wall Thickness (WT) Range: 1.47 – 13.2mm |
| Length | 6000-12000mm |
| Delivery Condition | Annealed Temper —O60 (soft annealed). Drawn Tempers—H55 (light drawn), H80 (hard drawn), or HE80 (hard drawn and end annealed). |
| Inspection Certificate | EN 10204 Type 3.1 (Mill Test Certificate), EN 10204 Type 3.2 (Witness Testing or 3rd Party Inspection) |
| Test | Chemical Analysis, Tensile Test ASTM E8/E8M, Rockwell Hardress ASTM E18, Expansion Test, Flattening Test, NDE Test ASTM E243 |
Packing
Both ends should be equipped with plastic pipe caps or bevel protectors. Small-diameter pipes should be packaged in wooden crates, and large-diameter pipes should be wrapped in woven bags.
Application
Marine Engineering: Copper-nickel alloys are extensively used in marine applications due to their excellent resistance to seawater corrosion. They are used for piping, heat exchangers, and condensers in shipbuilding and offshore platforms.
Desalination Plants: These alloys are suitable for desalination plants, particularly in multi-stage flash distillation and reverse osmosis systems, due to their corrosion and biofouling resistance, which is critical for maintaining efficiency in desalination processes.
Heat Exchangers and Condensers: Copper-nickel alloys’ excellent heat transfer properties make them ideal for heat exchangers and condensers in power plants, refineries, and petrochemical plants, mainly where seawater is used as a coolant.
Fire Fighting Systems: Copper-nickel pipes are used in seawater firefighting systems, sprinkler systems, and hydrants on offshore platforms and ships because of their durability and resistance to seawater.
Oil and Gas Production: In the oil and gas industry, these alloys are used for piping, hydraulic lines, and, in some cases, for crude oil distillation columns. Their corrosion resistance is beneficial for handling sour gas and environments with high sulfur content.
Power Generation: Copper-nickel tubes are used in the condensers of power stations and nuclear power plants due to their corrosion resistance and ability to prevent biofouling, thereby maintaining efficiency over time.
Seawater Piping Systems: Copper-nickel pipes are used in seawater piping systems in marine and coastal facilities due to their excellent resistance to corrosion and biofouling.
Automotive Applications: Copper-nickel alloys’ corrosion resistance benefits some automotive applications, like brake lines and oil coolers.
