Nov 14 2012
Topics Covered
Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Other Designations
Introduction
Super alloys or high performance alloys are of three types
that include iron-based, cobalt-based and nickel-based alloys. These
alloys are of different shapes and they possess good oxidation and
creep resistance. Super alloys can function under high mechanical
stress and high temperatures and also in places that require high
surface stability. Super alloys can be strengthened by precipitation
hardening, solid-solution hardening and work hardening methods.
The following datasheet provides an overview of super alloy
3RE60™.
Chemical Composition
The chemical composition of super alloy 3RE60™ is outlined in
the following table.
| Element |
Content
(%) |
| Iron, Fe |
71.2 |
| Chromium, Cr |
18.5 |
| Nickel, Ni |
4.50 |
| Molybdenum, Mo |
2.60 |
| Silicon, Si |
1.60 |
| Manganese, Mn |
1.50 |
| Nitrogen, N |
0.070 |
| Carbon, C |
≤0.030 |
| Phosphorous, P |
≤ 0.030 |
| Sulfur, S |
≤ 0.015 |
Physical Properties
The following table shows the physical properties of super
alloy 3RE60™.
| Properties |
Metric |
Imperial |
| Density |
7.80 g/cm3 |
0.282 lb/in3 |
Mechanical Properties
The mechanical properties of super alloy 3RE60™ are displayed
in the following table.
| Properties |
Metric |
Imperial |
| Tensile strength |
700-880 MPa |
102000-128000 psi |
| Yield strength (at
strain 0.200 %) |
≥ 450 MPa |
≥ 65300 psi |
| Elastic modulus |
200 GPa |
29000 ksi |
| Elongation at break |
≥30% |
≥ 30% |
| Charpy Impact ( at
-100°C/-148°F) |
30.0 J |
22.1 ft.lb |
| Hardness, Rockwell C |
≤ 28 |
≤ 28 |
Thermal Properties
The thermal properties of super alloy 3RE60™ are given in the
following table.
| Properties |
Metric |
Imperial |
| Thermal expansion
co-efficient (at 30-100°C/86-212°F) |
13.0 µm/m°C |
7.22 µin/in°F |
Other Designations
Equivalent materials to super alloy 3RE60™ are:
- ASTMA789
- ASTMA790
- DIN1.4417