Aug 2 2013
Topics Covered
Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Other Designations
Applications
Introduction
Magnesium AM100A-T4 alloy is most commonly used as a permanent cast, it provides good strength and elongation to the parts.
This data sheet will elaborate on the properties and applications of magnesium AM100A-T4 alloy.
Chemical Composition
The following table shows the chemical composition of magnesium AM100A-T4 alloy.
|
Element |
Content (%) |
|
Magnesium, Mg |
90 |
|
Aluminum, Al |
9.3-10.7 |
|
Silicon, Si |
≤0.30 |
|
Zinc, Zn |
≤ 0.30 |
|
Manganese, Mn |
≤ 0.10 |
|
Copper, Cu |
≤0.10 |
|
Nickel, Ni |
≤0.010 |
Physical Properties
The physical properties of magnesium AM100A-T4 alloy are given in the following table.
|
Properties |
Metric |
Imperial |
|
Density |
1.83 g/cc |
0.0661 lb/in³ |
|
Melting Point (Incipient Melting) |
≥430°C |
≥806°F |
Mechanical Properties
The mechanical properties of magnesium AM100A-T4 cast alloy are provided in the table below.
|
Properties |
Metric |
Imperial |
|
Tensile strength |
275 MPa |
39900 psi |
|
Yield strength (@ strain 0.200%) |
90 MPa |
13100 psi |
|
Compressive yield strength (at 0.2% offset) |
90 MPa |
13100 psi |
|
Ultimate bearing strength |
475 MPa |
68900 psi |
|
Bearing yield strength |
310 MPa |
45000 psi |
|
Shear strength |
140 MPa |
20300 psi |
|
Shear modulus (typical for steel) |
17 GPa |
2470 ksi |
|
Elastic modulus |
45 GPa |
6530 ksi |
|
Poisson's ratio |
0.35 |
0.35 |
|
Elongation at break (in 50 mm) |
10% |
10% |
|
Hardness, Brinell (500 kg load, 10 mm ball) |
52 |
52 |
|
Hardness, Knoop (estimated from Brinell) |
67 |
67 |
|
Hardness, Rockwell E |
62 |
62 |
|
Machinability (relative rating, 100 = best) |
100% |
100% |
Thermal Properties
The following table outlines the thermal properties of magnesium AM100A-T4 alloy.
|
Properties |
Metric |
Imperial |
|
Thermal expansion co-efficient (@ 0.000-100°C/32-212°F) |
25 µm/m°C |
13.9 µin/in°F |
|
Thermal conductivity |
73 W/mK |
507 BTU in/hr.ft².°F |
Other Designations
Other designations that are used to denote magnesium AM100A-T4 alloy are:
-
ASTM B 80
-
ASTM B 403 (Ingot UNS M10101)
-
ASTM B 199
-
AMS 4455 T6 temper
Applications
Magnesium AM100A-T4 alloy is typically used in making commercial and military pressure tight sand and permanent mold structural castings.