Aluminium / Aluminum 6101 Alloy (UNS A96101)

Topics Covered

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

Introduction

Aluminium / Aluminum alloys have good corrosion resistance. The strength of these alloys can be reduced when they are exposed to high temperatures. However, their strength can be increased at subzero temperatures. Aluminium / Aluminum 6101 alloy has good mechanical strength and high electrical conductivity.

The following datasheet will discuss in detail about Aluminium / Aluminum 6101 alloy.

Chemical Composition

The following table shows the chemical composition of  Aluminium / Aluminum 6101 alloy.

Element Content (%)
Aluminium / Aluminum, Al 98.9
Magnesium, Mg 0.60
Silicon, Si 0.50

Physical Properties

The physical properties of  Aluminium / Aluminum 6101 alloy are given in the following table.

Properties Metric Imperial
Density 2.7 g/cm3 0.0975 lb/in3
Melting point 588°C 1090°F

Mechanical Properties

The mechanical properties of  Aluminium / Aluminum 6101 alloy are tabulated below.

Properties Metric Imperial
Tensile strength 97 MPa 14069 psi
Yield strength 76 MPa 11023 psi
Elastic modulus 70-80 GPa 10153-11603 ksi
Poisson's ratio 0.33 0.33

Thermal Properties

The thermal properties of Aluminium / Aluminum 6101 alloy are given in the following table.

Properties Conditions
T (ºC) Treatment
Thermal expansion 23 (10-6/ºC) 20-100 -
Thermal conductivity 218 W/mK 25 T6

Other Designations

Other designations that are equivalent to Aluminium / Aluminum 6101 alloy include:

  • ASTM B317
  • SAE J454

Fabrication and Heat Treatment

Machinability

Aluminium / Aluminum 6101 alloy has good machinability. Oil base lubricant is used to perform machining operations. Carbide or high speed tool steel tooling can be used for machining this alloy.

Forming

Aluminium / Aluminum 6101 alloy can be formed using conventional methods.

Welding

Aluminium / Aluminum 6101 alloy can be welded using all standard welding methods. Inert gas arc welding method is the most preferred method for welding this alloy. The strength of the subsequent parts will be reduced when welded in the heat treated condition.

Heat Treatment

Aluminium / Aluminum 6101 alloy does not react to heat treatment. However, heat treatment can be done by annealing and aging.

Cold Working

Aluminium / Aluminum 6101 alloy can be cold worked in the aged or annealed conditions.

Annealing

Aluminium / Aluminum 6101 alloy is annealed at 413°C (775°F) for 3 h followed by controlled cooling at 10 to 260°C (50 to 500°F) per hour, and cooling in air. Stress relief annealing process can also be performed after cold working at 344°C (650°F) followed by cooling in air.

Aging

Aluminium / Aluminum 6101 alloy can be aged at different temperatures and times based on the finished temper. For example, T6 can be aged at 177°C (350°F) for 20 h, T61 can be aged at 227°C (440°F) for 6 h, and T63 can be aged at 194°C (380°F) for 19 h followed by cooling in air.

Hardening

Aluminium / Aluminum 6101 alloy can be hardened by cold working and aging.

Applications

Aluminium / Aluminum 6101 alloy is used in electrical bus bar conductor applications for enclosed bus electrical installations.

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