Industrial Copper-Nickel Tubing Conforming to ASTM B466 for Various Applications

B466 Copper Nickel Tube

- Covers seamless copper-nickel (Cu-Ni) pipes and tubes in nominal sizes for general engineering applications.
- Includes alloys: UNS C70600 (90-10 Cu-Ni) and UNS C71500 (70-30 Cu-Ni).
- Metric (B466M) and inch-pound (B466) versions; dimensions are interchangeable.

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ASTM B466/B466M - Standard Specification for Seamless Copper-Nickel Pipe and Tube

1. Scope

- Covers seamless copper-nickel (Cu-Ni) pipes and tubes in nominal sizes for general engineering applications.

- Includes alloys: UNS C70600 (90-10 Cu-Ni) and UNS C71500 (70-30 Cu-Ni).

- Metric (B466M) and inch-pound (B466) versions; dimensions are interchangeable.

2. Ordering Information

Buyers must specify:

- 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).

3. 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 limited to prevent detrimental effects.

4. Mechanical Properties

- Tensile Strength, Yield Strength, and Elongation requirements vary by temper and alloy.

- *Example (Annealed C71500)*:

- Tensile: ≥380 MPa (55 ksi)

- Yield: ≥170 MPa (25 ksi)

- Elongation: ≥30% (2 in. gauge).

5. Dimensions and Tolerances

- Covers OD, wall thickness, and length tolerances.

- Straightness and roundness requirements specified.

6. Inspection and Testing Requirements

- Chemical Analysis: Performed to verify composition (ASTM E478).

- Mechanical Tests: Tensile tests on specimens from finished tubes.

- Hydrostatic Testing: Optional; if required, pressure and duration specified.

- Non-Destructive Testing (NDT): Eddy current or ultrasonic testing upon agreement.

- Visual Inspection: Surface defects must not exceed specified limits.

7. Certification and Marking

- Certification: Manufacturer must provide compliance certification (including test results).

- Marking: Each piece must show ASTM standard, alloy, temper, size, manufacturer’s name/trademark.

8. Keywords

Seamless pipe, copper-nickel alloy, UNS C70600, UNS C71500, pressure applications, condenser tubes.

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