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 | 33 – 37% | |
| Co | Cobalt | Bal. | |
| Cr | Chromium | 19 – 21% | |
| Mo | Molybdenum | 9 – 10.5% | |
| Element | Name | Content % | |
|---|---|---|---|
| Minor & residual8 elements | |||
| Fe | Iron | ≤ 1% | |
| Ti | Titanium | ≤ 1% | |
| C | Carbon | ≤ 0.025% | |
| Mn | Manganese | ≤ 0.15% | |
| Si | Silicon | ≤ 0.15% | |
| P | Phosphorus | ≤ 0.015% | |
| S | Sulphur | ≤ 0.01% | |
| B | Boron | ≤ 0.015% | |
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 | Solution annealed: 1050 ± 15 °C for 1–2 h, air cooled or water quenched | ≥ 793 (115 ksi) | ≥ 241 (35 ksi) | ≥ 50 |
| Bar | Cold-worked, medium hard | ≥ 1000 (145 ksi) | ≥ 655 (95 ksi) | ≥ 20 |
| Bar | Cold-worked, hard | ≥ 1207 (175 ksi) | ≥ 1000 (145 ksi) | ≥ 10 |
| Bar | Cold-worked, then aged at 540–645 °C ± 15 °C for 4 h, air cooled | ≥ 1793 (260 ksi) | ≥ 1586 (230 ksi) | ≥ 8 |
| Hot-worked and forged bar | hot-worked | — | — | — |
| Wire and filler metals | ||||
| Wire, dia. ≥1.6 mm | Solution annealed | ≥ 793 (115 ksi) | ≥ 241 (35 ksi) | ≥ 50 |
| Wire, dia. ≥1.6 mm | Cold worked, extra hard | ≥ 1793 (260 ksi) | ≥ 1586 (230 ksi) | ≥ 8 |
| Fine wire (1.473–<1.600 mm) | Annealed | ≥ 827 (120 ksi) | — | ≥ 40 |
| Fine wire (<0.0508 mm) | Cold worked, spring temper | ≥ 2206 (320 ksi) | — | ≥ 1.8 |
Where this grade is recommended
Matched in 17 service conditions; ranks and scores computed from the condition-scoring matrix.
| Service condition | Industry | Temperature | Rank | Score |
|---|---|---|---|---|
| Packers & downhole tools | Oil & Gas | ≤ 150 °C | 1 / 7 | 95 |
| Guidewires & implant wire | Medical Devices | In-body (37 °C) | 1 / 5 | 95 |
| HS fasteners & shafts | Aerospace | ≤ 300 °C | 1 / 9 | 94 |
| Drill string & non-mag collars | Oil & Gas | ≤ 150 °C | 1 / 6 | 93 |
| Stents & cardiovascular | Medical Devices | In-body (37 °C) | 1 / 4 | 93 |
| Shafts, fasteners & propulsion | Marine & Offshore | ≤ 40 °C | 2 / 7 | 90 |
| Subsea connectors & hydraulics | Marine & Offshore | ≤ 40 °C | 2 / 5 | 90 |
| HPHT wells | Oil & Gas | 150 – 230 °C | 3 / 7 | 89 |
| Wellhead & Christmas tree | Oil & Gas | ≤ 120 °C | 5 / 7 | 88 |
| Orthopaedic & dental implants | Medical Devices | In-body (37 °C) | 6 / 8 | 87 |
| Platform structures & clamps | Marine & Offshore | Atmospheric & splash | 3 / 7 | 86 |
| Subsea lines, risers & manifolds | Oil & Gas | ≤ 60 °C | 5 / 7 | 86 |
Top 12 by score shown; 5 more matched conditions — browse them by industry in the selector. Open the selector →
Designations & equivalents
| W.Nr. (Germany) | 2.4999 |
| EN designation | NiCo35Cr20Mo10 |
| Trade name(s) | MP35N / 35NLT |
| ASTM / AISI | F562 |
| AMS (SAE aerospace) | 5758 / 5844 / 5845 |
| ISO | ISO 5832-6 |
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
6 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 MP35N · UNS R30035?
MP35N · UNS R30035 — Ni-Co multiphase. Multiphase Ni-Co-Cr-Mo — ultra-high strength, immune to chloride SCC
What is the maximum service temperature of R30035?
Typically about 400 °C; the practical limit depends on media, stress and design life — acceptance per the governing standard.
What is the tensile strength of R30035?
The specified minimum tensile strength is 1793 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 R30035?
ASTM F562, ASTM F688, ISO 5832-6, AMS 5758, AMS 5844, AMS 5845
Where is R30035 typically used?
Packers & downhole tools (Oil & Gas); Guidewires & implant wire (Medical Devices); HS fasteners & shafts (Aerospace); Drill string & non-mag collars (Oil & Gas)
In which forms is R30035 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
Or email us: info@kochlin.com
Further reading: Wire breaks and strength reversal in strand-annealed MP35N fine wire (0.02–0.065 mm)