# ALUMINUM 6061 TUBE AND PIPE PROPERTIES

Aluminum 6061 drawn tube and pipe room-temperature material properties for T6/T4 tempers are shown in the results charts of the following calculator.

 INPUT PARAMETERS Form Drawn tube --- Temper T6 T4 --- Thickness 0.025-0.500 inch

 RESULTS Specification --- Basis --- Temperature Room-temperature Tensile Ultimate Strength, Ftu Longitudinal (L) --- ksi Long Transverse (LT) --- Tensile Yield Strength, Fty Longitudinal (L) --- Long Transverse (LT) --- Compressive Yield Strength, Fcy Longitudinal (L) --- Long Transverse (LT) --- Shear Ultimate Strength, Fsu --- Bearing Ultimate Strength, Fbru e/D=1.5 --- e/D=2.0 --- Bearing Yield Strength, Fbry e/D=1.5 --- e/D=2.0 --- Young's Modulus (Tension), E --- 103 ksi Young's Modulus (Compression), Ec --- Shear Modulus, G --- Poisson's Ratio, μ --- - Density, ω --- lb/in3

Notes:

• e - edge distance (measured in the loading direction), D - diameter of the hole
• In those instances where the direction in which the material will be used is not known, the lesser of the applicable longitudinal or transverse properties should be used.
• Allowable stresses for welded structures are generally lower than allowable stresses for the same material when not welded. The heat of welding anneals the material around the weld so the strength of heat-treated material is reduced in this zone. Typical values for all forms of welded 6061-T6 : Ftu : 24, Fty: 20, Fcy: 20, Fsu: 15 , Fsy: 12, Fbru: 50 , Fbry: 30 (unit: ksi)

### Definitions:

A Basis: The lower value of either the statistically calculated number T99, or the specification minimum (S-basis). T99 indicates that at least 99 percent of the population is expected to equal or exceed the statistically calculated mechanical property value with a confidence of 95 percent.

S Basis: S-values are minimum values given in the material specifications and standards. Their statistical bases are not defined.

Longitudinal Direction: Direction parallel to the flow in a worked material (grain direction).

Long Transverse: Transverse direction having the largest dimension (width direction).

Short Transverse: Transverse direction having the smallest dimension (thickness direction)

Solution heat treatment: Heating the alloy to a suitable temperature, waiting at that temperature long enough to allow constituents to dissolve and rapid cooling to hold the constituents in solution.

Modulus of elasticity (Young’s modulus): The rate of change of unit tensile or compressive stress with respect to unit tensile or compressive strain for the condition of uniaxial stress within the proportional limit.

Poisson’s ratio: The ratio of lateral unit strain to longitudinal unit strain under the condition of uniform and uniaxial longitudinal stress within the proportional limit.

Shear stress: A form of a stress acts parallel to the surface (cross section) which has a cutting nature.

Stress: Average force per unit area which results strain of material.

### Supplements:

Aluminum 6061: Properties of aluminum 6061 alloy

Aluminum 6061 Bar, Rod and Shapes: Material properties of aluminum 6061 rolled, drawn, cold-finished or extrusion rod, bar and shapes

Aluminum 6061 Plate and Sheet: Material properties of aluminum 6061 plate and sheet

### Reference:

• MMPDS-01, Metallic Materials Properties Development and Standardization (2003)