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 elements1 element | |||
| Ni | Nickel (incl. cobalt, by difference) | ≥ 99% | |
| Element | Name | Content % | |
|---|---|---|---|
| Minor & residual6 elements | |||
| Cu | Copper | ≤ 0.25% | |
| Fe | Iron | ≤ 0.4% | |
| Mn | Manganese | ≤ 0.35% | |
| C | Carbon | ≤ 0.02% | |
| Si | Silicon | ≤ 0.35% | |
| 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 rod | Annealed, all sizes | ≥ 345 (50 ksi) | ≥ 70 (10 ksi) | ≥ 40 |
| Bar and rod | Hot-worked, all sizes | ≥ 345 (50 ksi) | ≥ 70 (10 ksi) | ≥ 40 |
| Tube and pipe | ||||
| Welded pipe and tube (OD ≤127 mm) | Annealed | ≥ 345 (50 ksi) | ≥ 80 (12 ksi) | ≥ 35 |
| Welded pipe and tube (OD >127 mm) | Annealed | ≥ 345 (50 ksi) | ≥ 70 (10 ksi) | ≥ 40 |
| Welded pipe and tube (all sizes) | Stress-relieved | ≥ 415 (60 ksi) | ≥ 205 (30 ksi) | ≥ 15 |
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 |
|---|---|---|---|---|
| Caustic & molten alkali | Chemical Processing | ≤ 80 °C | 2 / 5 | 92 |
| Water electrolysis | Hydrogen & New Energy | ≤ 90 °C | 3 / 5 | 90 |
| High-purity media | Pharma & Fine Chemicals | ≤ 80 °C | 3 / 5 | 88 |
| Hydrofluoric acid | Chemical Processing | ≤ 50 °C | 5 / 6 | 86 |
| Vacuum electronics | Semiconductor & Vac-Electronics | ≤ 400 °C | 6 / 8 | 85 |
Designations & equivalents
| UNS | N02201 |
| W.Nr. (Germany) | 2.4068 |
| EN designation | LC-Ni99 |
| Trade name(s) | Nickel 201 |
| ASTM / AISI | B160 / B161 / B162 / B163 / B366 / B725 / B730 |
| AMS (SAE aerospace) | 5553 |
| GOST (Russia) | ≈ НП1 |
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
7 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 Nickel 201 (low-carbon)?
Nickel 201 (low-carbon) — Ni corrosion-resistant. Low-carbon grade — preferred above 315 °C and for welded structures
What is the maximum service temperature of N4?
Typically about 320 °C; the practical limit depends on media, stress and design life — acceptance per the governing standard.
What is the tensile strength of N4?
The specified minimum tensile strength is 345 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 N4?
ASTM B160, ASTM B161, ASTM B162, ASTM B163, ASTM B725, ASTM B730, AMS 5553
Where is N4 typically used?
Caustic & molten alkali (Chemical Processing); Water electrolysis (Hydrogen & New Energy); High-purity media (Pharma & Fine Chemicals); Hydrofluoric acid (Chemical Processing)
In which forms is N4 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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