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Elmet Technologies

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Magnesium QH21A-T6, Cast
Categories: Metal; Nonferrous Metal; Magnesium Alloy

Material Notes: Good castability, pressure tight, creep resistance and high yield strength to 250°C.

Key Words: Mg
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Physical PropertiesOriginal ValueComments
Density 1.83 g/cc
 
Mechanical PropertiesOriginal ValueComments
Tensile Strength, Ultimate 275 MPa
 97.0 MPa
@Temperature 315 °C,
Time 601 sec
tested at elevated temperature
 235 MPa
@Temperature 150 °C,
Time 601 sec
tested at elevated temperature
Tensile Strength, Yield 205 MPa
@Strain 0.2 %
Elongation at Break 4.0 %in 50 mm
Modulus of Elasticity 45.0 GPa
Compressive Yield Strength 210 MPaMachined specimen with L/D less than or equal to 3
Poissons Ratio 0.32Calculated
Fatigue Strength 105 MPa
@# of Cycles 5.00e+7
unnotched
Machinability 100 %Relative Rating, 100=Best
Shear Modulus 17.0 GPaEstimated from similar Mg alloys.
 
Electrical PropertiesOriginal ValueComments
Electrical Resistivity 0.00000685 ohm-cm
 
Thermal PropertiesOriginal ValueComments
Heat of Fusion 370 J/gEstimated from trends in similar Mg alloys.
CTE, linear 26.7 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-°CTypical Mg alloy value.
Thermal Conductivity 113 W/m-K
Melting Point 535 - 640 °C
Solidus 535 °C
Liquidus 640 °C
 
Processing PropertiesOriginal ValueComments
Casting Temperature 820 - 850 °CSand Casting
 
Component Elements PropertiesOriginal ValueComments
Copper, Cu <= 0.10 %
Magnesium, Mg 95 %As Remainder
Neodymium, Nd 0.60 - 1.5 %Nd-rich rare earths
Nickel, Ni <= 0.010 %
Silver, Ag 2.0 - 3.0 %
Thorium, Th 0.60 - 1.6 %
Zinc, Zn <= 0.20 %
Zirconium, Zr 0.40 - 1.0 %

References for this datasheet.

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MMQH21 / 12461

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