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Aluminum 2048
Categories: Metal; Nonferrous Metal; Aluminum Alloy; 2000 Series Aluminum Alloy
Key Words: UNS A92048; Aluminium 2048; AA2048
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Physical PropertiesMetricEnglishComments
Density 2.75 g/cc0.0994 lb/in³
 
Mechanical PropertiesMetricEnglishComments
Hardness, Brinell 122122500 kg load with 10 mm ball. Calculated value.
Hardness, Knoop 153153Converted from Brinell Hardness Value
Hardness, Rockwell A 47.547.5Converted from Brinell Hardness Value
Hardness, Rockwell B 7676Converted from Brinell Hardness Value
Hardness, Vickers 139139Converted from Brinell Hardness Value
Tensile Strength, Ultimate 455 MPa66000 psi
Tensile Strength, Yield 415 MPa60200 psi
Elongation at Break 8.30 %8.30 %In 5 cm; Sample 1.6 mm thick
Reduction of Area 9.00 %9.00 %Short Transverse; 75 mm (3 in.) thick plate
 12.0 %12.0 %Transverse; 75 mm (3 in.) thick plate
 16.0 %16.0 %Longitudinal; 75 mm (3 in.) thick plate
Modulus of Elasticity 70.0 GPa10200 ksiIn Tension. In Aluminum alloys, the compressive modulus is typically 2% greater than the tensile modulus
Compressive Yield Strength 420 MPa60900 psi
Poissons Ratio 0.3300.330Estimated from trends in similar Al alloys.
Charpy Impact 6.00 J4.43 ft-lbTransverse
 10.3 J7.60 ft-lbLongitudinal
Fatigue Strength 220 MPa
@# of Cycles 5.00e+8 		31900 psi
@# of Cycles 5.00e+8
Fracture Toughness 31.9 MPa-m½29.0 ksi-in½K(IC) in T-l Direction
 35.2 MPa-m½32.0 ksi-in½K(IC) in L-T Direction
Shear Modulus 26.0 GPa3770 ksiEstimated from similar Al alloys.
Shear Strength 270 MPa39200 psi
 
Electrical PropertiesMetricEnglishComments
Electrical Resistivity 0.00000400 ohm-cm0.00000400 ohm-cmT851 Temper
 
Thermal PropertiesMetricEnglishComments
CTE, linear  23.5 µm/m-°C
@Temperature 20.0 - 100 °C		13.1 µin/in-°F
@Temperature 68.0 - 212 °F
 25.3 µm/m-°C
@Temperature 20.0 - 300 °C		14.1 µin/in-°F
@Temperature 68.0 - 572 °F
Specific Heat Capacity 0.926 J/g-°C0.221 BTU/lb-°F
Thermal Conductivity 159 W/m-K1100 BTU-in/hr-ft²-°FT851 Temper
Melting Point 520 - 645 °C968 - 1190 °FEstimated from trends in similar Al alloys.
Solidus 520 °C968 °FEstimated from trends in similar Al alloys.
Liquidus 645 °C1190 °F
 
Component Elements PropertiesMetricEnglishComments
Aluminum, Al 94.8 %94.8 %As remainder
Copper, Cu 2.80 - 3.80 %2.80 - 3.80 %
Iron, Fe <= 0.20 %<= 0.20 %
Magnesium, Mg 1.20 - 1.80 %1.20 - 1.80 %
Manganese, Mn 0.20 - 0.60 %0.20 - 0.60 %
Silicon, Si <= 0.15 %<= 0.15 %
Titanium, Ti <= 0.10 %<= 0.10 %
Zinc, Zn <= 0.25 %<= 0.25 %

References for this datasheet.

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