Aluminum A357.0 is a high-strength, cast aluminum alloy widely used in the automotive and aerospace industries due to its excellent mechanical properties and corrosion resistance. In its T6 condition (solution heat-treated and artificially aged), A357.0 offers a combination of high tensile strength, good fatigue resistance, and excellent castability. Its primary applications include structural components such as space frames, wheels, axle and differential housings, intake manifolds, and electronic enclosures. The alloy’s composition, dominated by aluminum and silicon, ensures good wear resistance and thermal stability, making it suitable for demanding environments.
Here are the detailed tables for all properties of Aluminum A357.0, Permanent Mold Cast, T6:
1. General Information
Property
Value
Aluminum Association
A357.0
Condition
T6 (Solution heat-treated and artificially aged)
UNS Number
A13570
Aluminum A357.0 permanent mold cast T6
2. Chemical Composition
Element
Composition (%)
Aluminum (Al)
90.8 – 93.0
Silicon (Si)
6.5 – 7.5
Magnesium (Mg)
0.4 – 0.7
Titanium (Ti)
0.04 – 0.2
Beryllium (Be)
0.04 – 0.07
Copper (Cu)
0 – 0.2
Iron (Fe)
0 – 0.2
Manganese (Mn)
0 – 0.1
Zinc (Zn)
0 – 0.1
Other elements
0 – 0.15
Aluminum A357.0 permanent mold cast T6
3. Mechanical Properties
Property
Value
Young’s Modulus
70.6 – 73.4 GPa
Yield Strength
244 – 263 MPa
Tensile Strength
306 – 332 MPa
Elongation
3.8 – 4.6 %
Compressive Strength
244 – 263 MPa
Flexural Strength
244 – 263 MPa
Shear Modulus
26.4 – 27.8 GPa
Bulk Modulus
66.1 – 75.5 GPa
Poisson’s Ratio
0.322 – 0.338
Hardness (Vickers)
96 – 111 HV
Fatigue Strength (10⁷ cycles)
76.5 – 93.5 MPa
Fracture Toughness
24.6 – 28.8 MPa.m⁰·⁵
Aluminum A357.0 permanent mold cast T6
4. Physical Properties
Property
Value
Density
2.65 – 2.71 g/cm³
Melting Point
549 – 626 °C
Maximum Service Temperature
130 – 150 °C
Minimum Service Temperature
-273 °C
Aluminum A357.0 permanent mold cast T6
5. Impact & Fracture Properties
Property
Value
Fracture Toughness
24.6 – 28.8 MPa.m⁰·⁵
Toughness (G)
8.45 – 11.5 kJ/m²
Aluminum A357.0 permanent mold cast T6
6. Thermal Properties
Property
Value
Thermal Conductivity
150 – 160 W/m·°C
Specific Heat Capacity
944 – 982 J/kg·°C
Thermal Expansion Coefficient
21.3 – 22.1 µstrain/°C
Thermal Shock Resistance
155 – 170 °C
Latent Heat of Fusion
384 – 393 kJ/kg
Aluminum A357.0 permanent mold cast T6
7. Electrical Properties
Property
Value
Electrical Resistivity
3.7 – 5.8 µΩ·cm
Electrical Conductivity
29.7 – 46.6 %IACS
Galvanic Potential
-0.76 to -0.68 V
Aluminum A357.0 permanent mold cast T6
8. Magnetic Properties
Property
Value
Magnetic Type
Non-magnetic
Aluminum A357.0 permanent mold cast T6
9. Processing & Machining Properties
Property
Rating
Metal Casting
Excellent
Cold Forming
Unsuitable
Hot Forming
Unsuitable
Machining Speed
88.4 m/min
Weldability
Excellent (Preheating not required; post-weld heat treatment required)
