EN AC-21000 (21000-T4, AICu4MgTi) Cast Aluminum
Cast Aluminum Alloys
Property Overview
Density3g/cm³
Elastic Modulus71GPa
Tensile Strength340MPa
Yield Strength240MPa
Brinell Hardness100HB
Maximum Service Temperature170°C
Chemical Composition
NI
0 to 0.050%
MN
0 to 0.1%
SI
0 to 0.2%
CU
4.2 to 5.0%
TI
0.15 to 0.3%
AL
93.4 to 95.5%
MG
0.15 to 0.35%
PB
0 to 0.050%
RES.
Residuals res. | | 0 to 0.1%
RESIDUALS RES.
0 to 0.1%
SN
0 to 0.050%
ZN
0 to 0.1%
FE
0 to 0.35%
Mechanical
Elastic (Young's, Tensile) Modulus
71 GPa
Elongation at Break
6.7 %
Fatigue Strength
100 MPa
Poisson's Ratio
0.33
Shear Modulus
27 GPa
Tensile Strength: Ultimate (UTS)
340 MPa
Tensile Strength: Yield (Proof)
240 MPa
Hardness
Brinell Hardness
100
Physical
Density
3.0 g/cm 3
Thermal
Latent Heat of Fusion
390 J/g
Maximum Temperature: Mechanical
170 °C
Melting Completion (Liquidus)
670 °C
Melting Onset (Solidus)
550 °C
Specific Heat Capacity
880 J/kg-K
Thermal Conductivity
130 W/m-K
Thermal Diffusivity
49 mm 2 /s
Thermal Expansion
23 µm/m-K
Thermal Shock Resistance
15 points
Electrical
Electrical Conductivity: Equal Volume
34 % IACS
Electrical Conductivity: Equal Weight (Specific)
100 % IACS
Calculated
Resilience: Ultimate (Unit Rupture Work)
21 MJ/m 3
Resilience: Unit (Modulus of Resilience)
390 kJ/m 3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
46 points
Strength to Weight: Axial
32 points
Strength to Weight: Bending
36 points
Environmental
Base Metal Price
11 % relative
Embodied Carbon
8.0 kg CO 2 /kg material
Embodied Energy
150 MJ/kg
Embodied Energy
150 MJ/kg 65 x 10 3 BTU/lb
Embodied Water
1150 L/kg
Embodied Water
1150 L/kg 140 gal/lb
Registered Designations & Aliases
21000-T4AICu4MgTiEN AC-21000EN AC-21000 (21000-T4, AICu4MgTi) Cast Aluminum
Standards
EN 1706 EN 1706: Aluminium and aluminium alloys. Castings. Chemical composition and mechanical properties
EN 1706 EN 1706: Aluminium and aluminium alloys. Castings. Chemical composition and mechanical properties Handbook of Aluminum vol. 2: Alloy Production and Materials Manufacturing, George Totten and D. Scott MacKenzie (editors), 2003