This specification2 covers rolled nickel-copper alloy (UNS N04400)* plate, sheet, and strip. The values stated in inch-pound units are to be regarded as the standard. The other values given are for information only.
Element |
Composition,% |
|---|---|
| Alloy N04400 | |
| Nickel, minA | 63.0 |
| Copper | 28.0 to 34.0 |
| Iron, max | 2.5 |
| Manganese, max | 2.0 |
| Carbon, max | 0.3 |
| Silicon, max | 0.5 |
| Sulfur, max | 0.024 |
A. Element shall be determined arithmetically by difference.
| Element | Composition Limits, % |
|---|---|
| Carbon | 0.2 max. |
| Sulfur | 0.015 max. |
| Aluminum | 0.5 max. |
| Lead | 0.006 max. |
| Tin | 0.006 max. |
| Zinc | 0.02 max. |
| Phosphorous | 0.02 max. |
| Condition (Temper) | Tensile Strength, min, psi (MPa) | Yield StrengthA (0.2 % offset), min, psi (MPa) | Elongation in 2 in. or 50 mm, or 4D, min, % | Rockwell Hardness (B Scale)B,C |
|---|---|---|---|---|
| Hot-Rolled Plate | ||||
| Annealed | 70 000 (485) | 28 000 (195) | 35 | ... |
| As-rolledD,E | 75 000 (515) | 40 000 (275) | 25 | ... |
| Hot-Rolled Sheet | ||||
| Annealed | 70 000 (485) | 28 000 (195) | 35 | ... |
| Cold-Rolled Sheet | ||||
| Annealed | 70 000 to 85 000 (485 to 585) | 28 000 (195) | 35 | ... |
| Quarter-hard | ... | ... | ... | 73 to 83 |
| Half-hard | ... | ... | ... | 82 to 90 |
| Hard | 100 000 (690) | 90 000 (620) | 2 | ... |
| Cold-Rolled Strip | ||||
| Annealed | 70 000 to 85 000 (485 to 585)F | 28 000 (195) | 35F | ... |
| Skin hard | ... | ... | ... | 68 to 73 |
| Quarter-hard | ... | ... | ... | 73 to 83 |
| Half-hard | ... | ... | ... | 82 to 90 |
| Three-quarter-hard | ... | ... | ... | 89 to 94 |
| Hard | 100 000 (690)F | 90 000 (620) | 2F | ... |
| Spring temper | ... | ... | ... | 98 min |
A. Yield strength requirements do not apply to material under 0.020 in. (0.51 mm) in thickness.
B. For Rockwell or equivalent hardness conversions see Hardness Conversion Tables E 140.
C. Caution should be observed in using the Rockwell test on thin material, as the results may be affected by specimen thickness. For thicknesses under 0.050 in. (1.3
mm), the use of the Rockwell superficial or the Vickers hardness test is suggested.
D. As-rolled plate may be given a stress-relieving heat treatment subsequent to final rolling.
E. As-rolled plate specified “ suitable for hot forming” shall be furnished from heats of known good hot-malleability characteristics (see X1.2.2). There are no applicable
tensile or hardness requirements for such material.
F. Not applicable for thickness under 0.010 in. (0.25 mm).
| Tensile Strength, min, psi (Mpa) | 78 000–85 000 (538—586) |
| Yield Strength, min, psi (Mpa) | (0.2% offset) 45,000 (310) |
| Elongation in 2 in., 50 mm, or 4D, min, % | 20 |