AZ31B-O Magnesium

Magnesium Alloys

Overview Chemical Composition Mechanical Properties Physical Properties Other Properties

Property Overview

Density1.7g/cm³

Elastic Modulus45GPa

Tensile Strength240MPa

Yield Strength120MPa

Brinell Hardness56HB

Maximum Service Temperature150°C

Weight Calculator

Chemical Composition

0 to 0.0050%

0.050 to 1.0%

0 to 0.1%

0 to 0.050%

2.4 to 3.6%

0 to 0.040%

93.6 to 97.1%

RES.

Residuals res. | | 0 to 0.3%

RESIDUALS RES.

0 to 0.3%

0.5 to 1.5%

0 to 0.050%

Mechanical

Elastic (Young's, Tensile) Modulus

45 GPa

Elongation at Break

12 %

Fatigue Strength

120 MPa

Poisson's Ratio

0.29

Shear Modulus

17 GPa

Shear Strength

140 MPa

Tensile Strength: Ultimate (UTS)

240 MPa

Tensile Strength: Yield (Proof)

120 MPa

Hardness

Brinell Hardness

Physical

Density

1.7 g/cm 3

Thermal

Latent Heat of Fusion

350 J/g

Maximum Temperature: Mechanical

150 °C

Melting Completion (Liquidus)

600 °C

Melting Onset (Solidus)

600 °C

Specific Heat Capacity

990 J/kg-K

Thermal Conductivity

100 W/m-K

Thermal Diffusivity

62 mm 2 /s

Thermal Expansion

26 µm/m-K

Thermal Shock Resistance

14 points

Electrical

Electrical Conductivity: Equal Volume

18 % IACS

Electrical Conductivity: Equal Weight (Specific)

95 % IACS

Calculated

Resilience: Ultimate (Unit Rupture Work)

25 MJ/m 3

Resilience: Unit (Modulus of Resilience)

170 kJ/m 3

Stiffness to Weight: Axial

15 points

Stiffness to Weight: Bending

70 points

Strength to Weight: Axial

39 points

Strength to Weight: Bending

50 points

Environmental

Base Metal Price

12 % relative

Embodied Carbon

23 kg CO 2 /kg material

Embodied Energy

160 MJ/kg

Embodied Energy

160 MJ/kg 67 x 10 3 BTU/lb

Embodied Water

970 L/kg

Embodied Water

970 L/kg 120 gal/lb

Registered Designations & Aliases

AZ31B-O Magnesium

Standards

ASTM B90 ASTM B90: Standard Specification for Magnesium-Alloy Sheet and Plate

ASTM B90 ASTM B90: Standard Specification for Magnesium-Alloy Sheet and Plate Advances in Wrought Magnesium Alloys: Fundamentals of Processing, Properties and Applications, Colleen Bettles and Matthew Barnett (editors), 2012 ASTM B91: Standard Specification for Magnesium-Alloy Forgings ISO 3116: Magnesium and magnesium alloys - Wrought magnesium alloys Welding and Joining of Magnesium Alloys, Liming Liu (editor), 2010 Essential Readings in Magnesium Technology, Suveen N. Mathaudhu et al. (editors), 2014 Advanced Materials in Automotive Engineering, Jason Rowe (editor), 2012 Properties and Selection: Nonferrous Alloys and Special-Purpose Materials, ASM Handbook vol. 2, ASM International, 1993

ASTM B91 ASTM B91: Standard Specification for Magnesium-Alloy Forgings

ISO 3116 ISO 3116: Magnesium and magnesium alloys - Wrought magnesium alloys