Aluminium / Aluminum Casting UNS A03830 Alloy

Sep 27 2012

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