Chemical composition
Nominal: mid-range where both limits are given, the cap where only a maximum is, balance takes the remainder. Exact specified ranges below.
| Element | Name | Content % | |
|---|---|---|---|
| Main elements4 elements | |||
| Ni | Nickel | ≥ 63% | |
| Cu | Copper | 27 – 33% | |
| Al | Aluminium | 2.3 – 3.15% | |
| Ti | Titanium | 0.35 – 0.85% | |
| Element | Name | Content % | |
|---|---|---|---|
| Minor & residual5 elements | |||
| Fe | Iron | ≤ 2% | |
| Mn | Manganese | ≤ 1.5% | |
| C | Carbon | ≤ 0.18% | |
| Si | Silicon | ≤ 0.5% | |
| S | Sulphur | ≤ 0.01% | |
Mechanical minima by form
Guaranteed values differ by form, size and delivery condition; quotations confirm the specification, form, size and condition.
| Form | Condition | Rm MPa | Rp0.2 MPa | A ≥ % |
|---|---|---|---|---|
| Bar and forgings | ||||
| Bar and forgings | Hot-worked, aged | ≥ 965 (140 ksi) | ≥ 690 (100 ksi) | ≥ 20 |
| Round bar | Cold-worked, aged, 6.4-25.4 mm | ≥ 1000 (145 ksi) | ≥ 760 (110 ksi) | ≥ 15 |
| Bar and forgings | Annealed, aged, ≤25.4 mm | ≥ 895 (130 ksi) | ≥ 620 (90 ksi) | ≥ 20 |
| Wire and filler metals | ||||
| Cold-drawn coiled wire | Spring temper and aged, ≤2.90 mm | ≥ 1240 (180 ksi) | — | — |
Where this grade is recommended
Matched in 5 service conditions; ranks and scores computed from the condition-scoring matrix.
| Service condition | Industry | Temperature | Rank | Score |
|---|---|---|---|---|
| Shafts, fasteners & propulsion | Marine & Offshore | ≤ 40 °C | 1 / 7 | 94 |
| Hydrofluoric acid | Chemical Processing | ≤ 50 °C | 2 / 6 | 90 |
| Subsea connectors & hydraulics | Marine & Offshore | ≤ 40 °C | 3 / 5 | 88 |
| Generator H₂ cooling & seals | Power & Nuclear | ≤ 60 °C | 2 / 4 | 86 |
| Logging cable & tool housing | Oil & Gas | ≤ 150 °C | 3 / 6 | 86 |
Designations & equivalents
| W.Nr. (Germany) | 2.4375 |
| EN designation | NiCu30Al |
| Trade name(s) | Monel K-500 / Nicorros Al |
| ASTM / AISI | B865 |
| AMS (SAE aerospace) | 4676 |
| BS (UK) | NA18 (BS 3072/3073/3074/3075/3076) |
| NACE sour service | ISO 15156-3: wellhead and valve internals only, H₂S ≤3.4 kPa, ≤35 HRC |
Cross-references are common near-equivalents for search and shortlisting; substitution across standards requires clause-by-clause verification. All grades in one cross-reference table →
Applicable standards
3 specifications. Name the standard and its edition on the order.
Guaranteed values and required tests differ between specifications — see Mechanical minima by form for the figures per form.
Frequently asked questions
What is Alloy K-500 · UNS N05500?
Alloy K-500 · UNS N05500 — Ni corrosion-resistant. Age-hardened Ni-Cu — high-strength pump shafts and fasteners in seawater
What is the maximum service temperature of N05500?
Typically about 480 °C; the practical limit depends on media, stress and design life — acceptance per the governing standard.
What is the tensile strength of N05500?
The specified minimum tensile strength is 965 MPa for the main product form. Minima for other forms and sizes are listed under "Mechanical minima by form" on this page.
Which standards cover N05500?
ASTM B865, SAE AMS 4676, AWS A5.14
Where is N05500 typically used?
Shafts, fasteners & propulsion (Marine & Offshore); Hydrofluoric acid (Chemical Processing); Subsea connectors & hydraulics (Marine & Offshore); Generator H₂ cooling & seals (Power & Nuclear)
In which forms is N05500 available?
Tube, plate, strip, bar, forgings, wire and other forms — sizes and delivery condition confirmed per order, with EN 10204 3.1 / 3.2 certification.
Same series
Download PDF datasheet
This grade’s datasheet as an A4 PDF — for filing, printing or forwarding to colleagues.
Download PDF datasheetSupply & enquiry
Tube & pipeφ1 – 219 × 0.25 – 25 mm
Plate4.76 – 80 mm
Barφ8 – 300 mm
Wire & filler metalsφ0.01 – 8 mmFor this grade we can supply, against your service conditions:
- Tube, plate, strip, bar, forgings, wire and more — with size range and lead time
- Chemistry and mechanical test report (EN 10204 3.1 / 3.2)
- Like-for-like alternatives and selection advice
- Applicable standards and inspection scope
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