308.0 (308.0-F, LM21, A03080) Cast Aluminum
Cast Aluminum Alloys
Property Overview
Density2.9g/cm³
Elastic Modulus73GPa
Tensile Strength190MPa
Yield Strength110MPa
Brinell Hardness70HB
Maximum Service Temperature170°C
Chemical Composition
MN
0 to 0.5%
SI
5.0 to 6.0%
CU
4.0 to 5.0%
TI
0 to 0.25%
AL
85.7 to 91%
MG
0 to 0.1%
RES.
Residuals res. | | 0 to 0.5%
RESIDUALS RES.
0 to 0.5%
ZN
0 to 1.0%
FE
0 to 1.0%
Mechanical
Elastic (Young's, Tensile) Modulus
73 GPa
Elongation at Break
2.0 %
Fatigue Strength
89 MPa
Poisson's Ratio
0.33
Shear Modulus
27 GPa
Shear Strength
150 MPa
Tensile Strength: Ultimate (UTS)
190 MPa
Tensile Strength: Yield (Proof)
110 MPa
Hardness
Brinell Hardness
70
Physical
Density
2.9 g/cm 3
Thermal
Latent Heat of Fusion
470 J/g
Maximum Temperature: Mechanical
170 °C
Melting Completion (Liquidus)
620 °C
Melting Onset (Solidus)
540 °C
Specific Heat Capacity
870 J/kg-K
Thermal Conductivity
140 W/m-K
Thermal Diffusivity
55 mm 2 /s
Thermal Expansion
20 µm/m-K
Thermal Shock Resistance
9.2 points
Electrical
Electrical Conductivity: Equal Volume
37 % IACS
Electrical Conductivity: Equal Weight (Specific)
110 % IACS
Calculated
Resilience: Ultimate (Unit Rupture Work)
3.3 MJ/m 3
Resilience: Unit (Modulus of Resilience)
83 kJ/m 3
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
47 points
Strength to Weight: Axial
18 points
Strength to Weight: Bending
25 points
Environmental
Base Metal Price
10 % relative
Embodied Carbon
7.7 kg CO 2 /kg material
Embodied Energy
140 MJ/kg
Embodied Energy
140 MJ/kg 62 x 10 3 BTU/lb
Embodied Water
1080 L/kg
Embodied Water
1080 L/kg 130 gal/lb
Physical Other
Calomel Potential
-660 mV
Registered Designations & Aliases
308.0 (308.0-F, LM21, A03080) Cast Aluminum308.0-FA03080LM21
Standards
ASTM B108 ASTM B108: Standard Specification for Aluminum-Alloy Permanent Mold Castings
ASTM B108 ASTM B108: Standard Specification for Aluminum-Alloy Permanent Mold Castings Iron in Aluminium Alloys: Impurity and Alloying Element, N. A. Belov et al., 2002