Nov 29 2012
Topics Covered
IntroductionChemical CompositionPhysical PropertiesMechanical PropertiesThermal Properties
Introduction
Super alloys or high performance alloys contain a number of elements in a variety of combinations to achieve a desired result. These alloys are excellent to use in environments with high temperatures and severe mechanical stress, and also in cases where high surface stability is needed. Super alloys provide good creep and oxidation resistance.
Strengthening of super alloys is performed by work hardening, solid-solution hardening, and precipitation hardening methods.
Tophel™ is a type E thermocouple alloy that has very good oxidation resistance and electro-motive force (EMF) stability. It is non-magnetic.
The following datasheet will provide more details about Tophel™.
Chemical Composition
The following table shows the chemical composition of Tophel™.
| Element |
Content (%) |
| Nickel, Ni |
90 |
| Chromium, Cr |
10 |
Physical Properties
The physical properties of Tophel™ are outlined in the following table.
| Properties |
Metric |
Imperial |
| Density |
8.73 g/cm³ |
0.315 lb/in³ |
| Melting point |
1430°C |
2610°F |
Mechanical Properties
The mechanical properties of Tophel™ are provided below.
| Properties |
Metric |
Imperial |
| Tensile strength (annealed) |
670 MPa |
97200 psi |
Thermal Properties
The thermal properties of Tophel™ are given below.
| Properties |
Metric |
Imperial |
| Thermal expansion co-efficient (@21-100°C/69.8-212°F) |
13.1 µm/m°C |
7.28 µin/in°F |
| Thermal conductivity |
19.25 W/mK |
133.6 BTU in/hr.ft².°F |