Jul 25 2013
Topics Covered
Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Fabrication and Heat Treatment
Machinability
Forming
Welding
Forging
Hot Working
Cold Working
Annealing
Hardening
Other Designations
Applications
Introduction
VDM LC 99.6 alloy is a pure nickel alloy that contains small additions of titanium and aluminum to attain a good combination of electrical and mechanical properties.
The following section will discuss in detail about VDM LC 99.6 alloy.
Chemical Composition
The chemical composition of VDM LC 99.6 alloy is outlined in the following table.
|
Element |
Content (%) |
|
Manganese, Mn |
0.35 |
|
Iron, Fe |
0.2 |
|
Copper, Cu |
0.15 |
|
Carbon, C |
0.15 |
|
Silicon, Si |
0.15 |
|
Magnesium, Mg |
0.01-0.08 |
|
Titanium, Ti |
0.01-0.05 |
|
Sulfur, S |
0.008 |
|
Nickel, Ni |
Balance |
Physical Properties
The following table shows the physical properties of VDM LC 99.6 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 VDM LC 99.6 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 VDM LC 99.6 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
VDM LC 99.6 alloy can be machined by conventional means. High speed tools with positive rake angles are preferred for cutting.
Forming
The alloy has good ductility, and can be formed by standard means.
Welding
Welding of VDM LC 99.6 alloy can be performed through all conventional welding techniques.
Forging
The alloy can be forged at temperatures ranging from 899 to 1232°C (1650 to 2250°F).
Hot Working
Hot working can be carried out at temperatures from 652 to 1204°C (1205 to 2200°F).
Cold Working
The alloy is very ductile, and can be readily cold-worked.
Annealing
VDM LC 99.6 alloy can be annealed at 871°C (1600°F).
Hardening
The alloy can be hardened only by cold working.
Other Designations
Other designations that are equivalent to VDM LC 99.6 alloy include the following:
-
AMS 5555
-
ASTM F1
-
ASTM F3
-
MIL N-46025
Applications
The following are the list of applications of VDM LC 99.6 alloy:
-
Terminals
-
Mechanical supports
-
Vacuum tubes for electrical devices.