24 July 2021 Other Alloy
Nickel 211 Pure Nickel Wire
| Principal Design Features |  | This is a nickel-manganese alloy intended for higher strength and better corrosion resistance to sulfur compounds than Nickel 200. |
| Applications | | Electron vacuum tube components such as grids. |
| Machinability | | The alloy can be machined by standard means. High-speed steel cutting tools are recommended and they should have 45 degree positive rake angles. |
| Forming | | The alloy is ductile and may be readily formed by conventional means. |
| Welding | | Nickel 211 is weldable by all of the conventional methods. |
| Heat Treatment | | The alloy is not heat treatable except to anneal following cold working. |
| Forging | | Forging may be done in the 2200 F to 1700 F range. |
Hot Working | | Hot work in the temperature range of 2200 F to 1300 F. |
| Cold Working | | Ductility of this alloy is good and it may be cold formed by standard means. |
| Annealing | | Anneal at 1600 F. |
| Hardening | | Hardens by cold work only. |
Physical Data :
| Density (lb / cu. in.) | 0.315 |
| Specific Gravity | 8.75 |
| Specific Heat (Btu/lb/Deg F - [32-212 Deg F]) | 0.127 |
| Electrical Resistivity (microhm-cm (at 68 Deg F)) | 102 |
| Melting Point (Deg F) | 2600 |
| Thermal Conductivity | 310 |
| Mean Coeff Thermal Expansion | 13.3 |
| Modulus of Elasticity Tension | 30 |
Composition (Nominal)
93.7 min. Ni + Co, 0.02 C, 4.25/5.25 Mn, 0.15 Si, 0.75 Fe, 0.25 Cu, 0.015 S
Slightly harder than Nickel alloy 200 in the annealed condition, this alloy possesses double the electrical resistivity and displays higher strength at elevated temperatures. It has been used for light bulb fuses and grids in vacuum tubes. Meets ASTM F290 specification requirements.