Dec 11 2012
Topics Covered
IntroductionChemical CompositionPhysical PropertiesMechanical PropertiesThermal PropertiesOther DesignationsFabrication and Heat Treatment Annealing Cold Working Welding Forging Forming Machinability Hardening Heat TreatmentApplications
Introduction
Super alloys or high performance alloys include iron-based, cobalt-based and nickel-based alloys. These alloys contain good oxidation and creep resistance and are available in different shapes.
Super alloys can be strengthened by precipitation hardening, solid-solution hardening and work hardening methods. These alloys can function under high mechanical stress and high temperatures and also in places that require high surface stability.
Glass sealing 42-6™ is an iron-nickel alloy comprising 6% chromium. This alloy is designed in a manner to suit the coefficient of expansion of 0120 glass.
The following datasheet provides an overview Glass sealing 42-6™.
Chemical Composition
The chemical composition of Glass sealing 42-6™ is outlined in the following table.
Element |
Content (%) |
Iron, Fe |
51 |
Nickel, Ni |
42.5 |
Chromium, Cr |
5.75 |
Manganese, Mn |
0.50 |
Silicon, Si |
0.25 |
Carbon, C |
≤ 0.070 |
Physical Properties
The following table shows the physical properties of Glass sealing 42-6™.
Properties |
Metric |
Imperial |
Density |
8.11 g/cm3 |
0.293 lb/in3 |
Melting point |
1427°C |
2600°F |
Mechanical Properties
The mechanical properties of Glass sealing 42-6™ are displayed in the following table.
Properties |
Metric |
Imperial |
Elastic modulus |
159 GPa |
23000 ksi |
Thermal Properties
The thermal properties of Glass sealing 42-6™ are given in the following table.
Properties |
Metric |
Imperial |
Thermal expansion co-efficient (@25-100°C/77-212°F) |
2.02 µm/m°C |
1.12 µin/in°F |
Thermal conductivity |
12.5 W/mK |
86.8 BTU in/hr.ft².°F |
Other Designations
Equivalent material to Glass sealing 42-6™ include ASTM F31-68.
Fabrication and Heat Treatment
Annealing
Glass sealing 42-6™ can be annealed at 788°C (1450°F) and then cooled in air.
Cold Working
Glass sealing 42-6™ is capable of being readily cold worked due to good ductility of the alloy.
Welding
Conventional procedures are used for welding Glass sealing 42-6™.
Forging
Glass sealing 42-6™ can be forged at 1204°C (2200°F). During the forging process, this alloy should be prevented from being contaminated by sulfur as a result of prolonged soaking in a furnace atmosphere.
Forming
Glass sealing 42-6™ contains good formability characteristic as it has ductility.
Machinability
Conventional methods can be used to readily machine Glass sealing 42-6™.
Hardening
Glass sealing 42-6™ can be hardened only when cold worked.
Heat Treatment
Glass sealing 42-6™ is suitable for annealing teat treatment as it cannot be hardened by heat treatment.
Applications
Glass sealing 42-6™ is suitable for use in glass sealing of double pane windows and cathode ray tubes.