AZ91C (M11914) Magnesium

Magnesium Alloys

Overview Chemical Composition Mechanical Properties Physical Properties Other Properties

Property Overview

Density1.7g/cm³

Elastic Modulus46GPa

Tensile Strength170 to 270MPa

Yield Strength83 to 130MPa

Brinell HardnessUnknown

Maximum Service Temperature130°C

Weight Calculator

Chemical Composition

0 to 0.010%

0.13 to 0.35%

0 to 0.3%

0 to 0.1%

8.1 to 9.3%

88.6 to 91.4%

RES.

Residuals res. | | 0 to 0.3%

RESIDUALS RES.

0 to 0.3%

0.4 to 1.0%

Mechanical

Elastic (Young's, Tensile) Modulus

46 GPa

Elongation at Break

2.3 to 7.9 %

Fatigue Strength

56 to 85 MPa

Poisson's Ratio

0.29

Shear Modulus

18 GPa

Shear Strength

96 to 160 MPa

Tensile Strength: Ultimate (UTS)

170 to 270 MPa

Tensile Strength: Yield (Proof)

83 to 130 MPa

Physical

Density

1.7 g/cm 3

Thermal

Latent Heat of Fusion

350 J/g

Maximum Temperature: Mechanical

130 °C

Melting Completion (Liquidus)

600 °C

Melting Onset (Solidus)

470 °C

Solidification (Pattern Maker's) Shrinkage

1.3 %

Specific Heat Capacity

990 J/kg-K

Thermal Conductivity

73 W/m-K

Thermal Diffusivity

43 mm 2 /s

Thermal Expansion

26 µm/m-K

Thermal Shock Resistance

9.9 to 16 points

Electrical

Electrical Conductivity: Equal Volume

9.9 to 12 % IACS

Electrical Conductivity: Equal Weight (Specific)

52 to 60 % IACS

Calculated

Resilience: Ultimate (Unit Rupture Work)

3.2 to 16 MJ/m 3

Resilience: Unit (Modulus of Resilience)

75 to 180 kJ/m 3

Stiffness to Weight: Axial

15 points

Stiffness to Weight: Bending

69 points

Strength to Weight: Axial

27 to 43 points

Strength to Weight: Bending

39 to 53 points

Environmental

Base Metal Price

12 % relative

Embodied Carbon

22 kg CO 2 /kg material

Embodied Energy

160 MJ/kg

Embodied Energy

160 MJ/kg 67 x 10 3 BTU/lb

Embodied Water

990 L/kg

Embodied Water

990 L/kg 120 gal/lb

Registered Designations & Aliases

AZ91C (M11914) MagnesiumM11914

Standards

ASTM B199 ASTM B199: Standard Specification for Magnesium-Alloy Permanent Mold Castings

ASTM B199 ASTM B199: Standard Specification for Magnesium-Alloy Permanent Mold Castings ASTM B403: Standard Specification for Magnesium-Alloy Investment Castings ASTM B80: Standard Specification for Magnesium-Alloy Sand Castings Essential Readings in Magnesium Technology, Suveen N. Mathaudhu et al. (editors), 2014 Environmental Degradation of Advanced and Traditional Engineering Materials, Lloyd H. Hihara et al., 2014. Advanced Materials in Automotive Engineering, Jason Rowe (editor), 2012

ASTM B403 ASTM B403: Standard Specification for Magnesium-Alloy Investment Castings

ASTM B80 ASTM B80: Standard Specification for Magnesium-Alloy Sand Castings