6351-T11 Aluminum
6351-T11 aluminum is 6351 aluminum in the T11 temper. To achieve this temper, the metal is naturally aged until it meets standard mechanical property requirements, just like T1. In addition, the temper definition allows for a limited amount of strain hardening and artificial aging.
The graph bars on the material properties cards below compare 6351-T11 aluminum to: 6000-series alloys (top), all aluminum alloys (middle), and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.
Mechanical Properties
Elastic (Young's, Tensile) Modulus
69 GPa 10 x 106 psi
Elongation at Break
16 %
Fatigue Strength
96 MPa 14 x 103 psi
Poisson's Ratio
0.33
Shear Modulus
26 GPa 3.8 x 106 psi
Shear Strength
130 MPa 18 x 103 psi
Tensile Strength: Ultimate (UTS)
210 MPa 30 x 103 psi
Tensile Strength: Yield (Proof)
120 MPa 18 x 103 psi
Thermal Properties
Latent Heat of Fusion
410 J/g
Maximum Temperature: Mechanical
160 °C 320 °F
Melting Completion (Liquidus)
650 °C 1200 °F
Melting Onset (Solidus)
570 °C 1060 °F
Specific Heat Capacity
900 J/kg-K 0.21 BTU/lb-°F
Thermal Conductivity
180 W/m-K 100 BTU/h-ft-°F
Thermal Expansion
23 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
46 % IACS
Electrical Conductivity: Equal Weight (Specific)
150 % IACS
Otherwise Unclassified Properties
Base Metal Price
9.5 % relative
Density
2.7 g/cm3 170 lb/ft3
Embodied Carbon
8.3 kg CO2/kg material
Embodied Energy
150 MJ/kg 66 x 103 BTU/lb
Embodied Water
1180 L/kg 140 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
28 MJ/m3
Resilience: Unit (Modulus of Resilience)
110 kJ/m3
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
50 points
Strength to Weight: Axial
21 points
Strength to Weight: Bending
28 points
Thermal Diffusivity
72 mm2/s
Thermal Shock Resistance
9.0 points
Alloy Composition
| Al | 96 to 98.5 | |
| Si | 0.7 to 1.3 | |
| Mn | 0.4 to 0.8 | |
| Mg | 0.4 to 0.8 | |
| Fe | 0 to 0.5 | |
| Ti | 0 to 0.2 | |
| Zn | 0 to 0.2 | |
| Cu | 0 to 0.1 | |
| res. | 0 to 0.15 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Further Reading
ASTM B221: Standard Specification for Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, and Tubes
Aluminum Standards and Data, Aluminum Association Inc., 2013
EN 573-3: Aluminium and aluminium alloys. Chemical composition and form of wrought products. Chemical composition and form of products
Properties and Selection: Nonferrous Alloys and Special-Purpose Materials, ASM Handbook vol. 2, ASM International, 1993