Jul 10 2013
Topics Covered
Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Other Designations
Applications
Introduction
Super alloys function well in high temperature applications, and are highly sought after by numerous industries. Some of the components that use super alloys include gas turbine engines, nuclear reactors, submarines, rocket motors, and petroleum equipment.
Super alloy Ametek 948 is a controlled expansion alloy containing mainly iron and nickel. The following sections will discuss in detail about super alloy Ametek 948.
Chemical Composition
The chemical composition of Ametek 948 is outlined in the following table.
|
Element |
Content (%) |
|
Nickel, Ni |
48 |
|
Manganese, Mn |
0.8 max |
|
Silicon, Si |
0.3 max |
|
Chromium, Cr |
0.25 max |
|
Carbon, C |
0.05 max |
|
Aluminum, Al |
0.1 max |
|
Phosphorus, P |
0.025 max |
|
Sulfur, S |
0.025 max |
|
Iron, Fe |
Remainder |
Physical Properties
The physical properties of Ametek 948 are tabulated below.
|
Properties |
Metric |
Imperial |
|
Density |
7.8 g/cm3 |
0.283 lb/in3 |
|
Melting point |
1426°C |
2600 °F |
Mechanical Properties
The following table shows mechanical properties of Ametek 948.
|
Properties |
Metric |
Imperial |
|
Tensile strength |
545 MPa |
79 ksi |
|
Yield strength |
248 MPA |
36 ksi |
|
Hardness, Rockwell B |
80 |
80 |
Other Designations
Equivalent materials to Ametek 948 are tabulated below:
-
ASTM A753 ALLOY 2
-
ASTM F30
-
MIL N-14411B Comp 3
Applications
Ametek 948 is chiefly used in numerous electronic applications, especially for glass and ceramic seals.