Nov 29 2012
Topics Covered
IntroductionChemical CompositionPhysical PropertiesMechanical PropertiesThermal PropertiesOther DesignationsFabrication and Heat Treatment Machinability Forming Welding Heat Treatment Forging Hot Working Cold Working Annealing AgingApplications
Introduction
Super alloys have the capacity to function at very high temperatures and severe mechanical stress. They also have good creep and oxidation resistance. They can be formed in different shapes. They are subjected to solid-solution hardening, work hardening, and precipitation hardening for increasing their strength. There are three types of super alloys, namely cobalt-based, nickel-based, and iron-based alloys.
Monel 502™ is a nickel-copper alloy. The following datasheet gives an overview of Monel 502™.
Chemical Composition
The following table shows the chemical composition of Monel 502™.
| Element |
Content (%) |
| Nickel , Ni |
63-70 |
| Aluminum, Al |
2.5-3.5 |
| Iron, Fe |
2 max |
| Manganese, Mn |
1.5 max |
| Titanium, Ti |
0.5 max |
| Silicon, Si |
0.5 max |
| Carbon, C |
0.1 max |
| Sulfur, S |
0.01 max |
| Copper, Cu |
Remainder |
Physical Properties
The physical properties of Monel 502™ are highlighted in the following table.
| Properties |
Metric |
Imperial |
| Density |
7.7-8.03 g/cm³ |
0.278-0.290 lb/in³ |
| Melting point |
1330°C |
2425°F |
Mechanical Properties
The mechanical properties of Monel 502™ are outlined in the following table.
| Properties |
Metric |
Imperial |
| Tensile strength |
1158 MPa |
167954 psi |
| Yield strength |
1034 MPa |
149969 psi |
| Elastic modulus |
190-210 GPa |
27557-30458 ksi |
| Poisson's ratio |
0.27-0.30 |
0.27-0.30 |
| Elongation |
15% |
15% |
| Reduction of area |
53% |
53% |
| Hardness |
335 |
335 |
Thermal Properties
The thermal properties of Monel 502™ are displayed in the following table.
| Properties |
Metric |
Imperial |
| Thermal conductivity |
42.7 W/mK |
296 BTU in/hr.ft².°F |
Other Designations
Other designation equivalent to Monel 502™ is AMS 4677.
Fabrication and Heat Treatment
Machinability
Monel 502™ can be machined similar to that of austenitic stainless steels.
Forming
Monel 502™ can be formed using conventional techniques.
Welding
Monel 502™ can be welded using conventional methods.
Heat Treatment
Monel 502™ reacts to heat treatment and annealing.
Forging
Monel 502™ is forged at 1010 to 1149°C (1850 to 2100°F) followed by quenching in water.
Hot Working
Monel 502™ is hot worked at 872 to 1149°C (1600 to 2100°F).
Cold Working
Monel 502™ can be cold worked using conventional methods.
Annealing
Monel 502™ is annealed at 1038°C (1900°F) followed by quenching in water.
Aging
Monel 502™ is aged at temperatures ranging from 594 to 608°C (1100 to 1125°F) followed by cooling in a furnace.
Applications
Monel 502™ is used in the following applications:
- Fasteners
- Pump shafting
- Propeller shafts
- Valve components