ASTM B466 / B466M
This specification establishes the requirements for seamless copper-nickel pipe and tube in straight lengths, suitable for general engineering purposes. The alloys involved are copper alloys UNS Nos. C70400, C70600, C70620, C71000, C71500,C71520, and C72200. Copper alloys UNS Nos. C70620 and C71520 are intended for product that will be subsequently welded. Units—The values stated in inch-pound or SI units are to be regarded separately as standard. The values in each system are not exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the specification.
Grades
| Copper Alloy UNS No. | Description |
|---|---|
| C70400 | - |
| C70600 & C70620 | - |
| C71000 | - |
| C71500 & C71520 | - |
| C72200 | - |
Chemical Properties
| Copper Alloy UNS Nos |
Copper incl Silver |
Nickel incl Cobalt |
Lead, max |
Iron | Zinc, max |
Manganese | Sulfur, max |
Phosphorus, max |
Chromium | Other Named Elements |
|---|---|---|---|---|---|---|---|---|---|---|
| C70400 | remainder | 4.8 to 6.2 | 0.05 | 1.3 to 1.7 | 1.0 | 0.30 to 0.8 | 0.02 | 0.02 | . . . | . . . |
| C70600 | remainder | 9.0 to 11.0 | 0.05 | 1.0 to 1.8 | 1.0 | 1.0 max | ... | ... | ... | ... |
| C70620 | 86.5 min | 9.0 to 11.0 | 0.02 | 1.0 to 1.8 | 0.50 | 1.0 max | 0.02 | 0.02 | . . . | Carbon 0.05 max |
| C71000 | remainder | 19.0 to 23.0 | 0.05A | 0.5 to 1.0 | 1.0A | 1.0 max | 0.02 | 0.02 | . . . | A |
| C71500 | remainder | 29.0 to 33.0 | 0.05 | 0.40 to 1.0 | 1.0 | 1.0 max | ... | ... | ... | ... |
| C71520 | 65.0 min | 29.0 to 33.0 | 0.02 | 0.40 to 1.0 | 0.50 | 1.0 max | 0.02 | 0.02 | . . . | Carbon 0.05 max |
| C72200 | remainder | 15.0 to 18.0 | 0.05A | 0.50 to 1.0 | 1.0A | 1.0 max | 0.02 | 0.02 | 0.30 to 0.7 | A,B |
Note:
A When the product is for subsequent welding applications, and so specified by the purchaser, zinc shall be 0.50 % max, lead 0.02 % max, and carbon 0.05 % max.
B Silicon 0.03 max, titanium 0.03 max.
Mechanical Properties
| Standard Temper |
Former Temper |
Copper Alloy UNS Nos. |
Tensile Strength, min, ksi (MPa) |
Yield Strength,A min, ksi (MPa) |
RockwellB Hardness 30 T |
|---|---|---|---|---|---|
| O60 | Soft annealC | C70400 | 37 (255) | 12 (85) | 45 max |
| C70600 & C70620 | 38 (260) | 13 (90) | 45 max | ||
| C71000 | 45 (310) | 16 (110) | 48 max | ||
| C71500 & C71520 | 52 (345) | 18 (125) | 51 max | ||
| C72200 | 40 (275) | 14 (95) | 45 max | ||
| H55 | Light drawn | C70400 | 40 (275) | 30 (205) | 41 to 65 |
| C70600 & C70620 | 45 (310) | 35 (240) | 45 to 70 | ||
| C72200 | 48 (330) | 42 (290) | 55 to 70 | ||
| H80 | Hard drawn | ||||
| C70400 | 45 (310) | 35 (240) | 60 min | ||
| C70600 & C70620 | 50 (345) | 40 (275) | 63 min | ||
| C71000 | 55 (380) | 43 (295) | 67 min | ||
| C71500 & C71520 | 70 (485) | 45 (310) | 70 min | ||
| C72200 | 55 (380) | 44 (305) | 67 min |
Note:
A At 0.5 % extension under load.
B Rockwell hardness values shall apply only to tube or pipe having a wall thickness of 0.020 in. [0.5 mm] or over and an outside diameter of 5⁄16 in. [8 mm] or over. For all other tube no Rockwell hardness values shall apply. Rockwell hardness tests shall be made on the inside surface of the tube. When suitable equipment is not available for determining the specified Rockwell hardness, other Rockwell scales and values may be specified subject to agreement between the manufacturer and the purchaser.
C Although no minimum grain size is specified, the product must nevertheless have fully recrystallized grain structure.
