Aluminium / Aluminum Casting UNS A03830 Alloy

Topics Covered

Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties

Introduction

Aluminium / Aluminum alloys have strong corrosion resistance and high electrical conductivity. These alloys tend to lose some of their strength at high temperatures ranging between 200 and 250°C (392 and 482°F). However, they can gain strength at subzero temperatures, making them a useful low-temperature alloy.

The following datasheet provides more details about Aluminium / aluminum casting A03830 alloy.

Chemical Composition

The following table shows the chemical composition of Aluminium / aluminum casting A03830 alloy.

Element Content (%)
Aluminum, Al 79.7 - 88.5
Silicon, Si 9.50 - 11.5
Zinc, Zn 3
Copper, Cu 2 - 3
Iron, Fe 1.30
Manganese, Mn 0.50
Nickel, Ni 0.30
Tin, Sn 0.15
Magnesium, Mg 0.10
Other, total 0.50

Physical Properties

The following table shows the physical properties of Aluminium / aluminum casting A03830 alloy.

Properties Metric Imperial
Density 2.70 g/cm3 0.0975 lb/in³

Mechanical Properties

The mechanical properties of Aluminium / aluminum casting A03830 alloy are outlined in the following table.

Properties Metric Imperial
Tensile strength, ultimate 310 MPa 45000 psi
Tensile strength, yield (@0.2%) 152 MPa 22000 psi
Fatigue strength (@# of cycles 5.00e+8, notch status unknown, test unknown) 145 MPa 21000 psi
Shear strength (calculated) 187 MPa 27100 psi
Modulus of elasticity 70-80 GPa 10153-11603 ksi
Poissons ratio 0.33 0.33
Elongation at break (in 50 mm) 3.50% 3.50%
Charpy impact (v-notch) 4 J 2.95 ft-lb
Hardness, Brinell (500 kg load, 10 mm ball) 75 75
Hardness, Knoop (estimated from Brinell Hardness) 98 98
Hardness, Vickers (estimated from Brinell Hardness) 85 85
Machinability (0-100 Scale (100=best)) 70 70

Thermal Properties

The thermal properties of Aluminium / aluminum casting A03830 alloy are given in the following table.

Properties Metric Imperial
Thermal expansion co-efficient 21.1 µm/m°C 11.7 µin/in°F
Thermal conductivity 96.2 W/mK 668 BTU in/hr.ft².°F

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