Jul 25 2013
Topics Covered
Introduction
Chemical Composition
Physical Properties
Other Designations
Fabrication and Heat Treatment
Machinability
Forming
Welding
Forging
Hot Working
Cold Working
Annealing
Applications
Introduction
Super alloys function excellently at elevated temperatures and high mechanical stress, and also where high surface stability is required. These alloys possess good creep and oxidation resistance, and can be produced in a number of shapes.
Super alloy VDM LC 99.2 is a lower carbon version of a commercially pure (99%) nickel material that contains small amounts of other elements totaling less than 1%. The following sections will discuss in detail about super alloy VDM LC 99.2.
Chemical Composition
The chemical composition of super alloy VDM LC 99.2 is outlined in the following table.
|
Element |
Content (%) |
|
Iron, Fe |
0.4 max |
|
Manganese, Mn |
0.35 max |
|
Silicon, Si |
0.35 max |
|
Copper, Cu |
0.25 max |
|
Carbon, C |
0.02 max |
|
Sulfur, S |
0.01 max |
|
Nickel, Ni |
Remainder |
Physical Properties
The physical properties of super alloy VDM LC 99.2 are tabulated below.
|
Properties |
Metric |
Imperial |
|
Density |
8.8 g/cm3 |
0.321 lb/in3 |
|
Melting point |
1426°C |
2600°F |
Other Designations
Equivalent materials to super alloy VDM LC 99.2 are provided below:
-
AMS 5553
-
ASTM B160
-
ASTM B161
-
ASTM B162
-
ASTM B163
-
ASTM B366
-
ASTM B725
-
ASTM B730
-
DIN 2.4061
-
DIN 2.4068
Fabrication and Heat Treatment
Machinability
Super alloy VDM LC 99.2 is a commercially pure nickel material that is soft and “gummy” to machine. It behaves similarly to nickel 200 grade alloy when machined. This alloy can be machined using conventional high speed tools.
Forming
Super alloy VDM LC 99.2 can be formed using any of the conventional methods. It is suitable for forming parts spinning operations.
Welding
Welding of super alloy VDM LC 99.2 can be performed using all the traditional welding methods except for oxyacetylene welding.
Forging
Forging should be performed in the temperature range of 1149-649°C (2100-1200°F).
Hot Working
Hot working can be performed at 1149-649°C (2100-1200°F).
Cold Working
Super alloy VDM LC 99.2 can be cold formed using all the standard tools.
Annealing
Super alloy VDM LC 99.2 can be annealed at 899-704°C (1650-1300°F).
Applications
Super alloy VDM LC 99.2 is mainly used in applications where spinning to form the product is required, and in chemical corrosion resistance applications in caustic solutions. It is also used in the manufacture of electronic components.