Hot Products
- Carbon & Carbon Alloy Steel
- Stainless Steel
- Copper & Nickel Alloy
- Heat Efficiency Tubes
- Pipe Fittings
- Pipe Flanges
- Gasket, Stud Bolt &Nut
- Industrial Valves
0102030405
Seamless Copper-Nickel Pipe and Tube Suppliers & Factory in China - ASTM B466/B466M Standards
Ordering Information
Buyers must specify the following when placing an order:
- ASTM designation (B466 or B466M)
- Alloy (UNS number)
- Temper (e.g., annealed, as-drawn)
- Dimensions (OD, wall thickness, length)
- Quantity (total length or number of pieces)
- End finish (e.g., plain, beveled)
- Certification / Test Reports (if required)
- Special Requirements (e.g., hydrostatic testing, non-destructive examination)
Material Codes and Chemical Composition
🔹 UNS C70600 (90-10 Cu-Ni)
Cu: 88.6% min | Ni: 9.0–11.0% | Fe: 1.0–1.8% | Mn: 1.0% max
🔹 UNS C71500 (70-30 Cu-Ni)
Cu: 65.0% min | Ni: 29.0–33.0% | Fe: 0.40–1.0% | Mn: 1.0% max
- Trace elements are strictly limited to prevent detrimental effects on material performance.
Mechanical Properties
- Tensile Strength, Yield Strength, and Elongation requirements vary by temper and alloy.
📌 Example — Annealed C71500:
✦ Tensile Strength: ≥ 380 MPa (55 ksi)
✦ Yield Strength: ≥ 170 MPa (25 ksi)
✦ Elongation: ≥ 30% (2 in. gauge)
✦ Yield Strength: ≥ 170 MPa (25 ksi)
✦ Elongation: ≥ 30% (2 in. gauge)
Dimensions and Tolerances
- Covers OD, wall thickness, and length tolerances.
- Straightness and roundness requirements are clearly specified.
Inspection and Testing Requirements
- Chemical Analysis: Performed to verify composition per ASTM E478.
- Mechanical Tests: Tensile tests conducted on specimens taken from finished tubes.
- Hydrostatic Testing: Optional; if required, pressure and duration must be specified.
- Non-Destructive Testing (NDT): Eddy current or ultrasonic testing available upon agreement.
- Visual Inspection: Surface defects must not exceed specified limits.
Certification and Marking
- Certification: Manufacturer must provide a compliance certification, including all relevant test results.
- Marking: Each piece must display the ASTM standard, alloy designation, temper, size, and manufacturer's name or trademark.
Keywords
Seamless pipe
Copper-nickel alloy
UNS C70600
UNS C71500
Pressure applications
Condenser tubes
📩 Want to order the same? Contact us Now to send your request!
❓ Frequently Asked Questions (FAQ)
What is ASTM B466 / B466M and what does it cover?
ASTM B466 / B466M is the Standard Specification for Seamless Copper-Nickel Pipe and Tube. It covers the requirements for dimensions, chemical composition, mechanical properties, testing, certification, and marking for seamless Cu-Ni pipes and tubes used in pressure and industrial applications.
What are the main alloy grades available under ASTM B466?
The two primary alloy grades are UNS C70600 (90-10 Copper-Nickel) and UNS C71500 (70-30 Copper-Nickel). Each has different nickel and iron content, offering varying levels of corrosion resistance and mechanical strength.
What information must be provided when ordering ASTM B466 tubes?
Buyers must specify the ASTM designation, UNS alloy number, temper condition, dimensions (OD, wall thickness, length), quantity, end finish, whether certification or test reports are required, and any special requirements such as hydrostatic testing or NDT.
What types of testing are required for ASTM B466 compliance?
Required testing includes chemical analysis (per ASTM E478), tensile mechanical tests on finished tube specimens, and visual inspection for surface defects. Optional tests include hydrostatic pressure testing and non-destructive testing (NDT) such as eddy current or ultrasonic methods, subject to buyer-seller agreement.
What are the typical mechanical properties of annealed UNS C71500 (70-30 Cu-Ni)?
For annealed UNS C71500, the minimum tensile strength is 380 MPa (55 ksi), the minimum yield strength is 170 MPa (25 ksi), and the minimum elongation is 30% measured on a 2-inch gauge length. Actual values depend on the specific temper and tube dimensions.
What are common applications for ASTM B466 seamless copper-nickel tubes?
ASTM B466 seamless copper-nickel tubes are widely used in marine heat exchangers, condenser tubing, seawater piping systems, desalination plants, and other high-pressure or corrosive-environment applications where superior resistance to saltwater corrosion is essential.