ALUMINUM 6061 TUBE AND PIPE MECHANICAL PROPERTIES

Aluminum 6061 drawn tube and pipe material properties for T6/T4 tempers are given below.

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 : F_tu : 24, F_ty: 20, F_cy: 20, F_su: 15 , F_sy: 12, F_bru: 50 , F_bry: 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
• Aluminum 6061 Bar, Rod and Shapes Mechanical Properties
• Aluminum 6061 Plate and Sheet Mechanical Properties

Material Properties of Aluminum:

• Linear Thermal Expansion Coefficient of Aluminum
• Specific Heat of Aluminum
• Young's Modulus of Aluminum
• Yield and Tensile Strength of Aluminum
• Density of Aluminum

Reference:

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