AMS 5555 / UNS N02205 / Nickel 205 Wire
Products Description
AMS 5555 standard Nickel 205 wire is, in essence, a high-purity nickel material (≥99%). It is specifically alloyed with trace amounts of magnesium (0.01–0.08%) and titanium (0.01–0.05%); the purpose of adding these two elements is clear-to strike an optimal balance between the material's electrical properties and its mechanical strength. Simply put, the requirement is twofold: it must possess excellent electrical conductivity while simultaneously being capable of being drawn into fine filaments without fracturing, and it must maintain long-term operational stability within electronic tubes. This specific composition establishes it as a high-performance material serving as the "conductive backbone" of the electronics industry.
Please note: The strength and elongation of Nickel 205 decrease significantly in environments exceeding 315°C (600°F). If your application temperatures exceed this range, we advise you to consider switching to an alternative high-temperature-resistant material.
Nickel 205 Alloy (AMS 5555 / UNS N02205): Properties and Applications
Its typical applications include: anodes and grids for vacuum tubes, lead wires, transistor casings, battery housings, and magnetostrictive transducers. The material requirements for these components are: high purity (to ensure conductivity and consistency), excellent processability (allowing for fabrication into fine wires or thin strips), and stability under vacuum or in specific atmospheric environments.
01
High Ductility
Easily formed and cold-worked
02
Good Electrical Conductivity
Suitable for electrical applications
03
Work-Hardenable
Strengthens through cold working
04
Weldable
Compatible with all conventional welding methods
chemical composition
(Nickel 205 Wire UNS N02205)
| element | Content Range |
| Ni | ≥99.0% |
| Mg | 0.01-0.08% |
| Ti | 0.01-0.05% |
| Mn | ≤0.35% |
| Fe | ≤0.20% |
| Cu / Si / C | ≤0.15% |
Mechanical Properties
(Nickel 205 Wire Annealed)
| performance | Numerical Value |
| Tensile Strength | 345–500 MPa (50–73 ksi) |
| Yield Strength | Approx. 90 MPa (13 ksi) |
| Elongation | 45% |
| Density | 8.89 g/cm³ |
| Melting Point | Approx. 1446°C |
Comparison of Intensities Across Different States
(Annealed Condition): Tensile strength is 400–500 N/mm² (58–73 ksi).
(Hard-Drawn Condition): Tensile Strength is 700–900 N/mm² (102–131 ksi).
This distinction is crucial: through cold working (cold drawing), the material's strength can be doubled. If a client prioritizes strength, we typically recommend the cold-drawn condition; however, if their requirements focus on electrical conductivity or formability, we recommend delivery in the annealed condition.
Manufacturing and Processing
Forming
Nickel 205 is highly ductile and can be shaped using standard forming techniques without significant difficulty.
Heat Treatment
Non-Hardenable by Heat Treatment – Strength improvements are only achievable through cold working.
Annealing Recommended After Cold Working – Helps restore ductility if excessive hardening occurs.
Forging
Optimal forging temperature range: 2250°F to 1650°F (1232°C to 899°C).
Hot Working
Best performed between 2200°F and 1250°F (1204°C to 677°C).
Cold Working
The alloy is highly ductile and responds well to cold forming.
Cold working increases hardness, but excessive deformation may necessitate annealing.
Annealing
Recommended annealing temperature: 1600°F (871°C).
Helps relieve internal stresses and restore workability after cold working.
Hardening
Only achievable through cold working (strain hardening).
No precipitation or heat treatment hardening mechanisms apply.
Technical Points for Material Communication
1. Do you know how to select the appropriate material standards and grades?
AMS 5555 - An aerospace material specification; this is the standard most frequently specified by customers.
UNS N02205 - Unified Numbering System; this serves as the most precise identifier for locating a specific material.
W.Nr. 2.4061 - German standard designation.
Nickel 205 - Commercial trade name.
2. Are you opting for the annealed or hard-drawn state of the Nickel 205 wire?
If you intend to use it for lead wires or welding applications, the annealed state is more suitable for you (it is soft, easily formable, and weldable).
If you intend to use it for structural support components, the hard-drawn state is more suitable for you (as it offers higher strength).
3. How can I obtain the best quotation for Nickel 205 Wire?
Please provide your specific requirements regarding diameter/dimensions, material application, packaging and shipping, delivery timeline, and other relevant details.
4. Could you provide a reference for the current market price of Nickel 205 Wire?
The price of Nickel 205 is primarily influenced by the prevailing market price of nickel. The pricing structure for pure nickel materials follows this logic: Nickel Base Price + Processing Fees + Profit Margin. Given the significant recent fluctuations in nickel material prices, please send us your specific requirements, and we will provide you with real-time pricing.
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