1100-H18 Aluminum
1100-H18 aluminum is 1100 aluminum in the H18 temper. This is the strongest temper normally produced through the action of only strain hardening. The graph bars on the material properties cards below compare 1100-H18 aluminum to: 1000-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
Brinell Hardness
44
Elastic (Young's, Tensile) Modulus
69 GPa 10 x 106 psi
Elongation at Break
5.5 %
Fatigue Strength
61 MPa 8.8 x 103 psi
Poisson's Ratio
0.33
Shear Modulus
26 GPa 3.8 x 106 psi
Shear Strength
90 MPa 13 x 103 psi
Tensile Strength: Ultimate (UTS)
170 MPa 24 x 103 psi
Tensile Strength: Yield (Proof)
150 MPa 22 x 103 psi
Thermal Properties
Latent Heat of Fusion
400 J/g
Maximum Temperature: Mechanical
180 °C 360 °F
Melting Completion (Liquidus)
660 °C 1210 °F
Melting Onset (Solidus)
640 °C 1190 °F
Specific Heat Capacity
900 J/kg-K 0.22 BTU/lb-°F
Thermal Conductivity
220 W/m-K 130 BTU/h-ft-°F
Thermal Expansion
24 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
59 % IACS
Electrical Conductivity: Equal Weight (Specific)
190 % IACS
Otherwise Unclassified Properties
Base Metal Price
9.0 % relative
Calomel Potential
-740 mV
Density
2.7 g/cm3 170 lb/ft3
Embodied Carbon
8.2 kg CO2/kg material
Embodied Energy
150 MJ/kg 66 x 103 BTU/lb
Embodied Water
1190 L/kg 140 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
9.0 MJ/m3
Resilience: Unit (Modulus of Resilience)
170 kJ/m3
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
50 points
Strength to Weight: Axial
17 points
Strength to Weight: Bending
25 points
Thermal Diffusivity
90 mm2/s
Thermal Shock Resistance
7.4 points
Alloy Composition
| Al | 99 to 99.95 | |
| Si | 0 to 1.0 | |
| Fe | 0 to 1.0 | |
| Cu | 0.050 to 0.2 | |
| Zn | 0 to 0.1 | |
| Mn | 0 to 0.050 | |
| res. | 0 to 0.15 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Further Reading
ASTM B483: Standard Specification for Aluminum and Aluminum-Alloy Drawn Tube and Pipe for General Purpose Applications
ASTM B210: Standard Specification for Aluminum and Aluminum-Alloy Drawn Seamless Tubes
ASTM B211: Standard Specification for Aluminum and Aluminum-Alloy Bar, Rod, and Wire
ASTM B547: Standard Specification for Aluminum and Aluminum-Alloy Formed and Arc-Welded Round Tube
Environmental Degradation of Advanced and Traditional Engineering Materials, Lloyd H. Hihara et al., 2014.
ASTM B209: Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate
Aluminum Standards and Data, Aluminum Association Inc., 2013
ISO 6361-2: Wrought aluminium and aluminium alloys - Sheets, strips and plates - Part 2: Mechanical properties
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