Nov 19 2012
Topics Covered
Introduction
Chemical Composition
Physical Properties
Introduction
Super alloys or high performance alloys consist of many elements in a variety of combinations to achieve a desired result. They have good creep and oxidation resistance, and can function where high surface stability is required. They can be also used at very high temperatures and severe mechanical stress. Solid-solution hardening, work hardening, and precipitation hardening are performed for strengthening these alloys. Cobalt-based, nickel-based, and iron-based alloys are three types of super alloys.
Super alloy Mar M 247™ is a nickel-based super alloy. The datasheet given below provides an overview of Mar M 247™.
Chemical Composition
The following table outlines the chemical composition of Mar M 247™.
|
Element |
Content (%) |
|
Nickel, Ni |
66.16-68.24 |
|
Tungsten, W |
9.30-9.70 |
|
Cobalt, Co |
9-9.50 |
|
Chromium, Cr |
8-8.50 |
|
Aluminum, Al |
5.40-5.70 |
|
Silicon, Si |
0.25 |
|
Manganese, Mn |
0.10 |
|
Carbon, C |
0.060-0.090 |
Physical Properties
The physical properties of super alloy Mar M 247™ are given in the following table.
|
Properties |
Metric |
Imperial |
|
Density |
7.8 g/cm³ |
0.283 lb/in³ |