This specification2 covers nickel-copper alloys UNS N04400 and N04405* in the form of hot-worked and coldworked rod and bar in the conditions shown in Table 1 and cold-worked wire in the conditions shown in Table 2. The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.
| Element | Composition Limits, % | |
|---|---|---|
| UNS N04400 | UNS N04405 | |
| Nickel A | 63.0 min | 63.0 min |
| Copper | 28.0 min - 34.0 max | 28.0 min - 34.0 max |
| Iron | 2.5 max | 2.5 max |
| Manganese | 2.0 max | 2.0 max |
| Carbon | 0.3 max | 0.3 max |
| Silicon | 0.5 max | 0.5 max |
| Sulfur | 0.024 max | 0.025 min - 0.060 max |
A. Element shall be determined arithmetically by difference.
| Condition and Diameter or Distance Between Parallel Surfaces, in. (mm) | Tensile Strength min, psi (MPa) | Yield Strength (0.2 % offset)A min. psi (MPa) | Elongation in 2 in. or 50 mm (or 4D), min, % | Rockwell Hardness (or equivalent) |
|---|---|---|---|---|
| UNS N04400 | ||||
| Cold-worked (as worked): |
||||
| Rounds under 1⁄2 (12.7) | 110 000 (760) | 85 000 (585) | 8B | — |
| Squares, hexagons,and rectangles under 1⁄2 (12.7) | 85 000 (585) | 55 000 (380) | 10B | — |
| Cold-worked (stress-relieved): | ||||
| Rounds under 1⁄2 (12.7) | 84 000 (580) | 50 000 (345) | 10B | — |
| Rounds, 1⁄2 to 3 1⁄2 (12.7 to 88.9),incl | 87 000 (600) | 60 000 (415) | 20 | — |
| Rounds,over 3 1⁄2 to 4 (88.9 to 101.6), incl | 84 000 (580) | 55 000 (380) | 20 | — |
| Squares,hexagons and rectangles, 2 (50.8) and under | 84 000 (580) | 50 000 (345) | 20B,C | — |
| Squares,hexagons and rectangles. over 2 (50.8) to 3 1⁄8 is (79.4), incl | 80 000 (552) | 50 000 (345) | 20 | — |
| Hot-worked (as worked or stress-relieved): | ||||
| Rounds, squares,and rectangles up to 12 (305), incl,and hexagons 2 1⁄8 is (54) and under | 80 000 (552) | 40 000 (276) | 30D | — |
| Rounds.squares,and rectangles over 12 (305) to 14 (356), incl | 75 000 (517) | 40 000 (276) | 30 | — |
| Hexagons over 2\.is (54) to 4 (102), incl | 75 000 (517) | 30 000 (207) | 25 | — |
| Rings and disks | — | — | — | B 75 to B95 |
| Hot-worked (annealed) or cold-worked (annealed}: | ||||
| Rod and bar,all sizes | 70 000 (480) | 25 000 (170) | 35 | — |
| Rings and disks | — | — | — | B 60 to B75 |
| Forging quality:E | ||||
| All sizes | — | — | — | — |
| UNS N04405 | ||||
| Cold-worked (as worked or stress-relieved): | ||||
| Rounds, under 1⁄2 (12.7) | 85 000 (585) | 50 000 (345) | 8B | — |
| Rounds, 1⁄2 (12.7) to 3 (76.2), incl | 85 000 (585) | 50 000 (345) | 15 | — |
| Rounds, over 3 (76.2) to 4 (101.6), incl | 80 000 (552) | 50 000 (345) | 15 | — |
| Hexagons and squares 2 (50.8) and under | 85 000 (585) | 50 000 (345) | 15B,C | — |
| Hexagons and squares over 2 (50.8) to 31⁄8 (79.4), incl | 80 000 (552) | 45 000 (310) | 15 | — |
| Hot-worked (as hot-worked or stress-relieved): | ||||
| Rounds 3 (76.2) and less | 75 000 (517) | 35 000 (241) | 30 | — |
| Hexagons and squares, 21⁄8 (54) and less | 75 000 (517) | 35 000 (241) | 30 | — |
| Hexagons and squares, over 21⁄8 (54) to 4 (101.6), incl | 70 000 (480) | 30 000 (207) | 25 | — |
| Hot-worked (annealed) or cold-worked (annealed): | ||||
| Rod and Bar, All sizes | 70 000 (480) | 25 000 (170) | 35 | — |
B. Not applicable to diameters or cross sections under 3⁄32 in. (2.4 mm).
C. For sections under 1⁄2 in. (12.7 mm), the elongation shall be 10 % min.
D. For hot-worked flats 5⁄16 in. (7.9 mm) and under in thickness the elongation shall be 20 % min.
E. Forging quality is furnished to chemical requirements and surface inspection only. No tensile properties are required.
| Alloy Condition and Size, in. (mm) | Tensile Strength, psi (MPa) | Wrapping Test | |
|---|---|---|---|
| Min | Max | ||
| UNS N04400 and N04405: | |||
| Annealed, all sizes | 70 000 (483) | 85 000 (586) | All wire shall wrap around a rod of the same diameter as the wire without cracking |
| No. 0 temper, under 1⁄2 (12.7) | 80 000 (552) | 95 000 (655) | |
| No. 1 temper, under 1⁄2 (12.7) | 90 000 (621) | 110 000 (758) | |
| UNS N04400: | |||
| Regular temper, under 1⁄2 (12.7) | 110 000 (758) | 140 000 (965) | All wire up to 0.2294 in. (5.84 mm), inclusive, shall wrap around a rod of the same diameter as the wire without cracking. Wire over 0.2294 in. diameter shall wrap around a rod of twice the wire diameter without cracking. |
| Regular temper, 1⁄2 (12.7) and over | 90 000 (621) | 130 000 (896) | |
| Spring temper | |||
| 0.028 (0.71) and less | 165 000 (1138) | ... | |
| Over 0.028 (0.71) to 0.057 (1.45), incl | 160 000 (1103) | ... | |
| Over 0.057 (1.45) to 0.114 (2.90), incl | 150 000 (1034) | ... | |
| Over 0.114 (2.90) to 0.312 (7.92), incl | 140 000 (965) | ... | |
| Over 0.312 (7.92) to 0.375 (9.53), incl | 135 000 (931) | ... | |
| Over 0.375 (9.53) to 0.500 (12.7), incl | 130 000 (896) | ... | |
| Over 0.500 (12.7) to 0.563 (14.3), incl | 120 000 (827) | ... | |