Magnesium AS41A-F Die Cast Alloy (UNS S45000)

Jul 29 2013

Topics Covered

Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Applications

Introduction

Magnesium AS41A-F die cast alloy has excellent creep resistance that is superior to magnesium alloy grades AZ91A, AZ91B, AZ91D, and AM60A. This alloy’s tensile strength, yield strength, and elongation are good as well.

The following sections will discuss in detail about magnesium AS41A-F die cast alloy.

Chemical Composition

The chemical composition of magnesium AS41A-F alloy is outlined in the following table.

Element Content (%)
Magnesium, Mg 94.6
Aluminum, Al 3.5 - 5
Silicon, Si 0.50-1.5
Manganese, Mn 0.20 - 0.50
Zinc, Zn ≤ 0.12
Copper, Cu ≤ 0.060
Nickel, Ni ≤ 0.030

Physical Properties

The physical properties of magnesium AS41A-F alloy are tabulated below.

Properties Metric Imperial
Density 1.776 g/cm3 0.06416 lb/in3

Mechanical Properties

The following table shows mechanical properties of magnesium AS41A-F cast alloy.

Properties Metric Imperial
Tensile strength 214 MPa 31000 psi
Yield strength 138 MPa 20000 psi
Poisson’s ratio 0.35 0.35
Elastic modulus 45 GPa 6526 ksi
Elongation at break 6-15% 6-15%
Hardness, Brinell 60 60

Thermal Properties

The thermal properties of magnesium AS41A-F alloy are tabulated below.

Properties Metric Imperial
Thermal expansion co-efficient (@20-100°C/68-212°F) 26.1 µm/m°C 14.5 µin/in°F
Thermal conductivity 68 W/mK 472 BTU in/hr.ft².°F

Applications

Magnesium AS41A-F alloy is used in automotive structural die casting parts in operating temperatures of up to 177°C (350°F).

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