Super Alloy Glass Sealing 42-6™

Topics Covered

Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Other Designations
Fabrication and Heat Treatment
     Annealing
     Cold Working
     Welding
     Forging
     Forming
     Machinability
     Hardening
     Heat Treatment
Applications

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.

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