Nov 20 2012
Topics Covered
IntroductionChemical CompositionPhysical PropertiesOther DesignationsFabrication and Heat Treatment Annealing Cold Working Welding Hardening Forging Forming Machinability Heat Treatment Hot WorkingApplications
Introduction
Super alloys also known as high performance alloys are available in three varieties namely cobalt-based, nickel-based and iron-based alloys. These alloys are of different shapes and they contain good oxidation and creep resistance.
Super alloys can be strengthened by precipitation hardening, solid-solution hardening and work hardening methods. They can function under high mechanical stress and high temperatures, and also in places that require high surface stability.
Permanickel 300™ is a high nickel content age-hardenable alloy with good electrical and thermal conductivity.
The following datasheet provides an overview of Permanickel 300™.
Chemical Composition
The chemical composition of Permanickel 300™ is outlined in the following table.
| Element |
Content (%) |
| Silicon, Si |
0.35 max |
| Copper, Cu |
0.25 max |
| Iron, Fe |
0.6 max |
| Magnesium, Mg |
0.5-0.2 |
| Manganese, Mn |
0.5 max |
| Carbon, C |
0.4 max |
| Titanium, Ti |
0.2-0.6 |
| Sulfur, S |
0.01 max |
| Nickel, Ni |
Remainder |
Physical Properties
The following table shows the physical properties of Permanickel 300™.
| Properties |
Metric |
Imperial |
| Density |
8.747 g/cm³ |
0.316 lb/in³ |
| Melting point |
1427°C |
2600°F |
Other Designations
Equivalent material to Permanickel 300™ includes ASTM F290.
Fabrication and Heat Treatment
Annealing
Permanickel 300™ is annealed at 1093°C (2000°F) and then quenched in water.
Cold Working
Conventional techniques are used for cold working Permanickel 300™.
Welding
Electric resistance welding is suitable for Permanickel 300™. Fusion welding is not suitable for this alloy because of its composition.
Hardening
Permanickel 300™ can be hardened by cold working and aging that results in high tensile strength.
Forging
Permanickel 300™ can be forged at 1204-927°C (2200-1700°F). This is then followed by a solution annealing process.
Forming
Conventional forming methods can be easily used for forming Permanickel 300™.
Machinability
Good machining results can be obtained when Permanickel 300™ is in the age-hardened condition. Conventional machining methods can be used for this alloy.
Heat Treatment
Permanickel 300™ is solution annealed at 1093°C (2000°F), quenched in water, age treated for 16 h at 488°C (910°F) and finally cooled in a furnace.
Hot Working
Permanickel 300™ is hot worked between 1204-649°C (2200-1200°F) and finally solution annealed.
Applications
Permanickel 300™ is used for electrical contact applications like springs.