Magnesium AZ31B-H26 (UNS M11311) Alloy

Jul 31 2013

Topics Covered

Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Other Designations
Applications

Introduction

Magnesium AZ31B-H26 alloy is available in the form of hard rolled sheets and is obtained by strain hardening and partial annealing of the base alloy AZ31B. This datasheet will elaborate on the properties and applications of this alloy.

Chemical Composition

The following table provides the chemical composition of magnesium AZ31B-H26 alloy.

Element Content (%)
Magnesium, Mg 97
Aluminum, Al 2.5-3.5
Zinc, Zn 0.60-1.4
Manganese, Mn ≥0.20
Silicon, Si ≤0.10
Copper, Cu ≤0.050
Calcium, Ca ≤0.040
Iron, Fe ≤0.0050
Nickel, Ni ≤0.0050

Physical Properties

The physical properties of magnesium AZ31B-H26 alloy are given in the following table.

Properties Metric Imperial
Density 1.77 g/cc 0.0639 lb/in³
Melting Point 605-630°C 1120-1170°F

Mechanical Properties

The mechanical properties of magnesium AZ31B-H26 alloy are listed in the table below.

Properties Metric Imperial
Tensile Strength 275 MPa 39900 psi
Yield strength 190 MPa 27600 psi
Compressive Yield Strength 130 MPa 18900 psi
Ultimate Bearing Strength 495 MPa 71800 psi
Bearing Yield Strength 275 MPa 39900 psi
Elongation at break (in 50 mm) 10% 10%
Elastic Modulus (in tension) 45 GPa 6530 ksi
Poisson's ratio 0.35 0.35
Shear Modulus 17 GPa 2470 ksi
Shear Strength 190 MPa 27600 psi
Machinability (relative rating, 100=Best) 100 100

Thermal Properties

The following table outlines the thermal properties of magnesium AZ31B-H26 alloy.

Properties Metric Imperial
Thermal expansion co-efficient (@ 0.000-100°C/32-212°F) 26 µm/m°C 14.4 µin/in°F
Thermal Conductivity 96 W/mK 666 BTU in/hr.ft².°F

Other Designations

Some of the other designations that are used to denote magnesium AZ31B-H26 alloy are:

  • UNS M11210

Applications

Magnesium AZ31B-H26 alloy is used in aircraft fuselage, cell phones and camera cases, textile machinery and concrete tools.

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