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0102030405
Seamless Copper-Nickel Pipe and Tube Suppliers in China - ASTM B466 / B466M Factory Products
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
| Alloy (UNS) | Common Name | Cu | Ni | Fe | Mn |
|---|---|---|---|---|---|
| C70600 | 90-10 Cu-Ni | 88.6% min | 9.0 – 11.0% | 1.0 – 1.8% | 1.0% max |
| C71500 | 70-30 Cu-Ni | 65.0% min | 29.0 – 33.0% | 0.40 – 1.0% | 1.0% max |
⚠️ Trace elements are strictly limited to prevent any detrimental effects on material performance.
Mechanical Properties
Tensile Strength, Yield Strength, and Elongation requirements vary by temper and alloy.
📌 Example — Annealed C71500 (UNS C71500)
| Property | Metric | Imperial |
|---|---|---|
| Tensile Strength | ≥ 380 MPa | ≥ 55 ksi |
| 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 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 upon mutual agreement
- Visual Inspection: Surface defects must not exceed specified limits
Certification and Marking
- Certification: Manufacturer must provide full compliance certification including all test results
- Marking: Each piece must clearly show ASTM standard, alloy, temper, size, and manufacturer's name or trademark
Keywords
Seamless Pipe
Copper-Nickel Alloy
UNS C70600
UNS C71500
Pressure Applications
Condenser Tubes
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❓ 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 material requirements, chemical composition, mechanical properties, dimensional tolerances, inspection, testing, certification, and marking for copper-nickel alloys used primarily in pressure and condenser applications.
What is the difference between UNS C70600 and UNS C71500?
UNS C70600 is a 90-10 copper-nickel alloy containing 9–11% nickel, while UNS C71500 is a 70-30 copper-nickel alloy with a higher nickel content of 29–33%. C71500 generally offers superior corrosion resistance, especially in seawater environments, making it suitable for more demanding applications.
What information must buyers specify when ordering ASTM B466 pipe and tube?
Buyers must specify the ASTM designation (B466 or B466M), alloy UNS number, temper condition, dimensions (OD, wall thickness, length), quantity, end finish type, required certifications or test reports, and any special requirements such as hydrostatic or non-destructive testing.
What types of testing are required under ASTM B466?
ASTM B466 requires chemical analysis (per ASTM E478), mechanical tensile testing, and visual inspection as standard. Optional tests include hydrostatic testing (with agreed pressure and duration) and non-destructive examination (NDT) such as eddy current or ultrasonic testing, based on buyer-supplier agreement.
What are the mechanical property requirements for annealed UNS C71500 tubes?
For annealed UNS C71500, the minimum tensile strength is 380 MPa (55 ksi), minimum yield strength is 170 MPa (25 ksi), and minimum elongation is 30% measured over a 2-inch gauge length. These values may vary depending on the temper and specific alloy grade.
What marking is required on ASTM B466 copper-nickel pipe and tube?
Each piece of ASTM B466 pipe or tube must be marked with the applicable ASTM standard designation, alloy UNS number, temper condition, size, and the manufacturer's name or trademark. A compliance certification including all relevant test results must also be provided by the manufacturer.