For circular cross sections the following figures give the torsion modulus of rupture for a range of Aluminum Alloys.
9.1.2. Torsion Modulus of Rupture for Round Aluminum Tubes
9.1.2. Torsion Modulus of Rupture for Round Aluminum Tubes
For circular cross sections the following figures give the torsion modulus of rupture for a range of Aluminum Alloys.