Jul 8 2013
Topics Covered
Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Fabrication and Heat Treatment
Machinability
Forming
Welding
Heat Treatment
Forging
Hot Working
Cold Working
Annealing
Other Designations
Applications
Introduction
Nickel 205 alloy is a wrought nickel alloy with properties similar to that of nickel 200 alloy. It exhibits excellent mechanical, electrical and corrosion-resistant properties and good oxidation resistance.
The alloy is ferromagnetic below 360°C (680°F), and contains small additions of aluminum and titanium for a good combination of mechanical and electrical properties.
The following section will discuss in detail about nickel 205 alloy.
Chemical Composition
The chemical composition nickel 205 alloy is outlined in the following table.
|
Element |
Content (%) |
|
Nickel, Ni |
≥99 |
|
Manganese, Mn |
≤0.35 |
|
Iron, Fe |
≤0.20 |
|
Silicon, Si |
≤0.15 |
|
Copper, Cu |
≤0.15 |
|
Carbon, C |
≤0.15 |
|
Magnesium, Mg |
0.010 - 0.080 |
|
Titanium, Ti |
0.010 - 0.050 |
|
Sulfur, S |
≤0.0080 |
Physical Properties
The following table shows the physical properties of nickel 205 alloy.
|
Properties |
Metric |
Imperial |
|
Density |
8.89 g/cm3 |
0.321 lb/in3 |
|
Melting point |
1435-1446°C |
2615-2635°F |
Mechanical Properties
The mechanical properties of nickel 205 alloy are displayed in the following table.
|
Properties |
Metric |
Imperial |
|
Tensile strength (annealed) |
345 MPa |
50000 psi |
|
Yield strength (annealed) |
90 MPa |
13100 psi |
|
Elongation at break (annealed) |
45% |
45% |
Thermal Properties
The thermal properties of nickel 205 alloy are given in the following table
|
Properties |
Metric |
Imperial |
|
Thermal expansion co-efficient (@20-100°C/68-212°F) |
13.3 µm/m°C |
7.39 µin/in°F |
|
Thermal conductivity |
75 W/mK |
521 BTU.in/hrft².°F |
Fabrication and Heat Treatment
Machinability
Nickel 205 alloy can be machined using high-speed tool steels.
Forming
The alloy is very ductile, and hence it can be formed through conventional methods.
Welding
The alloy can be welded using all common welding techniques.
Heat Treatment
Nickel 205 alloy is not heat-treatable, and hence it may be annealed after cold working.
Forging
Forging of nickel 205 alloy can be performed at temperatures from 899°C (1650°F) to 1204°C (2200°F).
Hot Working
Nickel 205 alloy can be hot-worked at temperatures from 677°C (1250°F) to 1204°C (2200°F).
Cold Working
Since the alloy is ductile, it may be readily cold-worked.
Annealing
Nickel 205 alloy can be annealed at 871°C (1600°F).
Other Designations
Other designations that are equivalent to nickel 205 alloy include the following:
-
AMS 5555
-
MIL N-46025
-
ASTM F1
-
ASTM F3
-
ASTM F9
Applications
The following are the list of applications of nickel 205 alloy:
-
Magnetostrictive transducers
-
Mechanical supports
-
Transistor housings
-
Battery cases
-
Lead wires
-
Anodes and grids of electronic valves