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Elmet Technologies

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Magnesium HM21A-T8, Sheet and Plate
Categories: Metal; Nonferrous Metal; Magnesium Alloy

Material Notes:

Key Words: UNS M13210; Mg
Vendors: Visit metalmen for your metals needs. Products include special chemistry, tight tolerances, custom tempers, odd dimensions/forms, and small quantities. Phone 1-800-767-9494.

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Physical PropertiesOriginal ValueComments
Density 1.78 g/cc
 
Mechanical PropertiesOriginal ValueComments
Tensile Strength, Ultimate 235 MPa
 97.0 MPa
@Temperature 315 °C,
Time 601 sec
Sheet
 140 MPa
@Temperature 150 °C,
Time 601 sec
Sheet
 220 MPa
@Thickness 1.63 mm,
Temperature 24.0 °C
Longitudinal sheet
 235 MPa
@Thickness 6.35 mm,
Temperature 24.0 °C
Longitudinal plate
 240 MPa
@Thickness 6.35 mm,
Temperature 24.0 °C
Transverse plate
 265 MPa
@Thickness 6.35 mm,
Temperature -54.0 °C
Longitudinal plate
 275 MPa
@Thickness 6.35 mm,
Temperature -72.0 °C
Longitudinal plate
 275 MPa
@Thickness 1.63 mm,
Temperature -54.0 °C
Longitudinal sheet
 280 MPa
@Thickness 1.63 mm,
Temperature -72.0 °C
Longitudinal sheet
 325 MPa
@Thickness 6.35 mm,
Temperature -196 °C
Longitudinal plate
 330 MPa
@Thickness 1.63 mm,
Temperature -196 °C
Longitudinal sheet
Tensile Strength, Yield 150 MPa
@Thickness 1.63 mm,
Temperature -72.0 °C
Longitudinal sheet
 160 MPa
@Thickness 1.63 mm,
Temperature 24.0 °C
Longitudinal sheet
 170 MPa
@Thickness 6.35 mm,
Temperature 24.0 °C
Transverse plate
 170 MPa
@Thickness 1.63 mm,
Temperature -196 °C
Longitudinal sheet
 175 MPa
@Thickness 6.35 mm,
Temperature 24.0 °C
Longitudinal plate
 175 MPa
@Thickness 1.63 mm,
Temperature -54.0 °C
Longitudinal sheet
 205 MPa
@Thickness 6.35 mm,
Temperature -54.0 °C
Longitudinal plate
 210 MPa
@Thickness 6.35 mm,
Temperature -196 °C
Longitudinal plate
 215 MPa
@Thickness 6.35 mm,
Temperature -72.0 °C
Longitudinal plate
 170 MPa
@Strain 0.2 %
Elongation at Break 11 %in 50 mm
 4.0 %
@Thickness 1.63 mm,
Temperature -196 °C
Longitudinal sheet
 4.2 %
@Thickness 6.35 mm,
Temperature -196 °C
Longitudinal plate
 4.7 %
@Thickness 6.35 mm,
Temperature -54.0 °C
Longitudinal plate
 5.0 %
@Thickness 6.35 mm,
Temperature -72.0 °C
Longitudinal plate
 5.6 %
@Thickness 6.35 mm,
Temperature 24.0 °C
Longitudinal plate
 6.2 %
@Thickness 1.63 mm,
Temperature -54.0 °C
Longitudinal sheet
 7.2 %
@Thickness 1.63 mm,
Temperature 24.0 °C
Longitudinal sheet
 13.7 %
@Thickness 6.35 mm,
Temperature 24.0 °C
Transverse plate
 17.5 %
@Thickness 1.63 mm,
Temperature -72.0 °C
Longitudinal sheet
Creep Strength 34.0 MPa
@Temperature 315 °C,
Time 360000 sec
0.2% total extension
 76.0 MPa
@Temperature 205 °C,
Time 360000 sec
0.2% total extension
Modulus of Elasticity 34.0 GPa
@Temperature 315 °C
 40.0 GPa
@Temperature 205 °C
Tensile Modulus 45.0 GPa
Compressive Yield Strength 130 MPaat 0.2% offset
Notched Tensile Strength 230 MPa60° V-Notch, root radius 0.0076 mm.
Ultimate Bearing Strength 415 MPa
Bearing Yield Strength 270 MPa
Poissons Ratio 0.35
Machinability 100 %Relative Rating, 100=Best
Shear Modulus 17.0 GPa
Shear Strength 125 MPa
 
Electrical PropertiesOriginal ValueComments
Electrical Resistivity 0.00000500 ohm-cm
 
Thermal PropertiesOriginal ValueComments
Heat of Fusion 343 J/g
CTE, linear 26.8 µm/m-°C
@Temperature 0.000 - 100 °C
 27.0 µm/m-°C
@Temperature 20.0 - 200 °C
Estimated from similar Mg alloys
Specific Heat Capacity 1.00 J/g-°C
Thermal Conductivity 135 W/m-KEstimated from trends in similar Mg alloys.
Melting Point 605 - 650 °C
Solidus 605 °C
Liquidus 650 °C
 
Processing PropertiesOriginal ValueComments
Processing Temperature 455 - 595 °CHot Working
Annealing Temperature 455 °C
 
Component Elements PropertiesOriginal ValueComments
Magnesium, Mg 97 %As Remainder
Manganese, Mn 0.45 - 1.1 %
Thorium, Th 1.5 - 2.5 %

References for this datasheet.

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