Nickel 211 SpringWire
Supply condition
UNS N02211
For fine electronic-tube grid wire, springs and lead wire where maximum tensile strength and springback are required.
Values for the SpringWire condition
Other Nickel 211 tempers and conditions
Nickel 211 is listed in 5 conditions; see the grade overview at Nickel 211.
- Annealed
- HotWorked
- ColdDrawn
- ColdDrawnSR
- SpringWire
Compare all 5 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
AnnealedDefault fully softened (rod, bar, wire) | Default stocked condition: maximum ductility for bending, heading, drawing and welding of electrode holders and lead wires. | 210 | 480 | 40 | 110 HB | — |
as hot-rolled or forged | Choose for larger-diameter bar and forged electrode blanks where mid-range strength and cost matter more than tight ductility. | 280 | 520 | 35 | 130 HB | 10 % IACS |
rod, bar and wire | Pick when the electrode shank or contact tip needs higher hardness and stiffness against mushrooming, with straight, close-tolerance stock. | 550 | 690 | 15 | 200 HB | — |
Cold Drawn, Stress Relieved | Use where cold-drawn strength is wanted but residual stresses would cause distortion during machining or service heating. | 620 | 720 | 12 | 18 HRC | 10 % IACS |
SpringWireThis page heavily cold drawn fine wire | For fine electronic-tube grid wire, springs and lead wire where maximum tensile strength and springback are required. | 800 | 900 | 3 | 25 HRC | 10 % IACS |
What is Nickel 211 SpringWire?
Nickel 211 SpringWire is Nickel 211 supplied in the SpringWire condition — for fine electronic-tube grid wire, springs and lead wire where maximum tensile strength and springback are required. Nickel 211 SpringWire has a yield strength of 800 MPa (116 ksi) and a tensile strength of 900 MPa (131 ksi) — stronger than 83% of nickel alloy grades. Elongation at break is 3% and the elastic modulus is 207 GPa (30 Msi). Nickel 211 SpringWire has a density of 8.72 g/cm³ (0.315 lb/in³), heavier than 76% of nickel alloy grades. It melts at 1,400°C (2,552 °F). Annealed is the default condition FabDigit quotes; SpringWire is available on request or by drawing note.
Advantages
- Easy to machine — 45/100, better than 99% of nickel alloy grades
- High electrical conductivity — 10 % IACS, better than 96% of nickel alloy grades
- Conducts heat well — 42 W/m·K (24.3 BTU/hr·ft·°F), better than 95% of nickel alloy grades
- High strength — 800 MPa (116 ksi), better than 83% of nickel alloy grades
Limitations
- Limited service temperature — 230°C (446 °F), worse than 99% of nickel alloy grades
- Limited ductility — 3%, worse than 93% of nickel alloy grades
- Limited formability — 20/100, worse than 75% of nickel alloy grades
Nickel 211 SpringWire properties
Typical room-temperature values for Nickel 211 SpringWire; 21 are specific to this condition. Other listed values are Nickel 211 reference data and may not represent this condition. Bars are the position among nickel alloy grades.
Physical3
Nickel 211 SpringWire has a density of 8.72 g/cm³ (0.315 lb/in³), heavier than 76% of nickel alloy grades. It melts at 1,400°C (2,552 °F).
Mechanical14
Nickel 211 SpringWire has a yield strength of 800 MPa (116 ksi) and a tensile strength of 900 MPa (131 ksi) — stronger than 83% of nickel alloy grades. Elongation at break is 3% and the elastic modulus is 207 GPa (30 Msi).
Thermal6
Nickel 211 SpringWire is rated for continuous service to 230°C (446 °F). It conducts heat at 42 W/m·K (24.3 BTU/hr·ft·°F), better than 95% of nickel alloy grades. Thermal expansion is 13.4 µm/m·K (7.44 µin/in·°F).
Electrical3
Nickel 211 SpringWire conducts electricity at 10 % IACS, better than 96% of nickel alloy grades.
Chemical & Environmental3
Corrosion resistance is very good (70/100), worse than 77% of nickel alloy grades.
Sustainability4
Producing a kilogram of Nickel 211 SpringWire takes about 170 MJ of energy and emits 13 kg of CO₂ — more than 61% of nickel alloy grades. Typical recycled content is 30%.
Manufacturability7
Nickel 211 SpringWire's machinability is fair (45/100, better than 99% of nickel alloy grades); weldability good (55/100); formability poor (20/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with Nickel 211 SpringWire
Is Nickel 211 easy to machine?
Gummy and work-hardening — use sharp positive-rake carbide, heavy feeds, low-to-moderate speeds, rigid setups and sulphur-free/chlorinated coolant; cold-drawn stock machines noticeably better than annealed.
Can Nickel 211 be welded?
Readily joined by GTAW/GMAW with Nickel 61 (ERNi-1) or matching Ni-Mn filler; keep joints free of sulphur, lead and low-melting contaminants and avoid oxide entrapment — the Mn addition gives better hot-crack tolerance than Nickel 200.
Can Nickel 211 be formed, bent or molded?
Excellent cold formability in the annealed state (bending, heading, deep drawing, fine wire drawing); hot-work at 870–1230 °C, and interanneal around 760–870 °C when reductions exceed ~50 %.
What surface finishes work on Nickel 211?
Not anodizable; use bright pickling/electropolishing, mechanical polish, or Ni/Ag plating on electrode contact surfaces — natural oxide film is thin and adherent for most service.
Nickel 211 chemical composition (wt %)
Limits by weight percent from the governing specification, written the way the spec states them — a single maximum for impurities, a range for alloying elements, and the base element as balance. Nominal is the typical mid-range value.
| Element | Spec limit (wt %) | Nominal |
|---|---|---|
| Mnties up sulphur, improves hot workability | 4.25 – 5.25 | 4.75 |
| Cgraphitization risk above ~315 °C | ≤ 0.2 | 0.1 |
| Fe | ≤ 0.75 | 0.2 |
| Cu | ≤ 0.25 | 0.05 |
| Si | ≤ 0.15 | 0.05 |
| S | ≤ 0.02 | 0.01 |
| NiNi + Co, minimum per ASTM B160 | ≥ 93.7 (balance) | — |
Nickel 211 SpringWire — frequently asked
What is Nickel 211 SpringWire used for?
Nickel 211 SpringWire is typically used for resistance welding electrodes, spark plug electrodes and electronic components. In short: sulfur-tolerant pure nickel; electrode-grade Ni-Mn wire; better hot working than Nickel 200.
What is the yield strength of Nickel 211 SpringWire?
Nickel 211 SpringWire has a typical yield strength of 800 MPa (116 ksi) and a tensile strength of 900 MPa (131 ksi) — stronger than 83% of nickel alloy grades. Strength varies by condition: see the 5 listed tempers.
Is Nickel 211 SpringWire easy to machine?
Reasonably — machinability is rated fair (45/100, better than 99% of nickel alloy grades). Gummy and work-hardening — use sharp positive-rake carbide, heavy feeds, low-to-moderate speeds, rigid setups and sulphur-free/chlorinated coolant; cold-drawn stock machines noticeably better than annealed.
Can Nickel 211 SpringWire be welded?
Yes — weldability is rated good (55/100). Readily joined by GTAW/GMAW with Nickel 61 (ERNi-1) or matching Ni-Mn filler; keep joints free of sulphur, lead and low-melting contaminants and avoid oxide entrapment — the Mn addition gives better hot-crack tolerance than Nickel 200.
What surface finishes work on Nickel 211 SpringWire?
Not anodizable; use bright pickling/electropolishing, mechanical polish, or Ni/Ag plating on electrode contact surfaces — natural oxide film is thin and adherent for most service.
Can Nickel 211 SpringWire be formed, bent or molded?
Excellent cold formability in the annealed state (bending, heading, deep drawing, fine wire drawing); hot-work at 870–1230 °C, and interanneal around 760–870 °C when reductions exceed ~50 %.
What is the maximum service temperature of Nickel 211 SpringWire?
Nickel 211 SpringWire is rated for continuous use to about 230°C (446 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
Sources
- ASTM B160 — Nickel Rod and Bar (UNS N02200/N02201/N02211) — ASTM International (2019)
- Nickel 211 alloy datasheet — Special Metals Corporation (2020)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys and Special-Purpose Materials — ASM International (1990)
- Nickel alloy property tables (N02211) — MatWeb (2024)
Property data is compiled from published supplier and standards handbooks and normalised for comparison. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.