Nov 23 2012
Topics Covered
Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Other Designations
Fabrication and Heat Treatment
Machinability
Forming
Welding
Heat Treatment
Forging
Hot Working
Cold Working
Annealing
Hardening
Applications
Introduction
Super alloys or high performance alloys contain a number of elements in a variety of combinations to achieve the desired result. They have good creep and oxidation resistance, and can be formed in different shapes. They can be strengthened by precipitation hardening, work hardening, and solid-solution hardening.
Super Alloy Nickel 205 is one of the essentially pure nickel materials. It is added with titanium and aluminum in order to enhance its electrical and mechanical properties. The following datasheet gives an overview of super alloy nickel 205.
Chemical Composition
The chemical composition of super alloy nickel 205 is outlined in the following table.
|
Elements |
Content (%) |
|
Nickel, Ni |
~99 |
|
Manganese, Mn |
0.35 |
|
Iron, Fe |
0.20 |
|
Carbon, C |
0.15 |
|
Copper, Cu |
0.15 |
|
Silicon, Si |
0.15 |
|
Magnesium, Mg |
0.010-0.080 |
|
Titanium, Ti |
0.010-0.050 |
|
Sulfur, S |
0.0080 |
Physical Properties
The physical properties of super alloy nickel 205 are highlighted in the following table.
|
Properties |
Metric |
Imperial |
|
Density |
8.89 g/cm³ |
0.321 lb/in³ |
|
Melting point |
1440°C |
2624°F |
Mechanical Properties
The following table shows the mechanical properties of super alloy nickel 205.
|
Properties |
Metric |
Imperial |
|
Tensile strength (annealed) |
345 MPa |
50000 psi |
|
Yield strength (@ strain 0.200%, annealed) |
90 MPa |
13100 psi |
|
Elongation at break (annealed) |
45% |
45% |
Thermal Properties
The thermal properties of super alloy nickel 205 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/hr.ft².°F |
Other Designations
Other designations that are equivalent to super alloy nickel 205 include:
-
AMS 5555
-
ASTM F1
-
ASTM F3
-
MIL N-46025
Fabrication and Heat Treatment
Machinability
Super alloy nickel 205 can be machined using all standard methods.
Forming
Super alloy nickel 205 can be formed using all conventional methods.
Welding
Super alloy nickel 205 can be welded using all conventional techniques.
Heat Treatment
Super alloy nickel 205 does not respond to heat treatment
Forging
Super alloy nickel 205 is forged at 899 to 1233°C (1650 to 2250°F)
Hot Working
Super alloy nickel 205 is hot worked at 677 to 1205°C (1250 to 2200°F).
Cold Working
Super alloy nickel 205 can be easily cold worked as this alloy has high ductility.
Annealing
Super alloy nickel 205 is annealed at 872°C (1600° F).
Hardening
Super alloy nickel 205 can be hardened only by cold working.
Applications
Super alloy nickel 205 is used in mechanical supports, terminals, and other related components in vacuum tubes for electrical devices.