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Magnesium HK31A-T6, Sheet
Categories: Metal; Nonferrous Metal; Magnesium Alloy

Key Words: UNS M13310
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Physical PropertiesMetricEnglishComments
Density 1.80 g/cc0.0650 lb/in³
 
Mechanical PropertiesMetricEnglishComments
Hardness, Brinell 5555500 kg load, 10 mm ball (Cast)
Tensile Strength, Ultimate 255 MPa
@Temperature 20.0 °C
37000 psi
@Temperature 68.0 °F
 55.0 MPa
@Temperature 315 °C,
Time 3.60e+6 sec
7980 psi
@Temperature 599 °F,
Time 1000 hour
tested at elevated temperature
 115 MPa
@Temperature 315 °C,
Time 601 sec
16700 psi
@Temperature 599 °F,
Time 0.167 hour
tested at elevated temperature
 180 MPa
@Temperature 150 °C,
Time 601 sec
26100 psi
@Temperature 302 °F,
Time 0.167 hour
Creep Strength  17.0 MPa
@Temperature 315 °C,
Time 360000 sec
2470 psi
@Temperature 599 °F,
Time 100 hour
0.2% total extension
 69.0 MPa
@Temperature 205 °C,
Time 360000 sec
10000 psi
@Temperature 401 °F,
Time 100 hour
0.2% total extension
Modulus of Elasticity  25.0 GPa
@Temperature 315 °C
3630 ksi
@Temperature 599 °F
 40.0 GPa
@Temperature 205 °C
5800 ksi
@Temperature 401 °F
Tensile Modulus 45.0 GPa6530 ksi
Poissons Ratio 0.350.35
Machinability 100 %100 %Relative Rating, 100=Best (Cast)
Shear Modulus 17.0 GPa2470 ksi
 
Electrical PropertiesMetricEnglishComments
Electrical Resistivity 0.00000770 ohm-cm0.00000770 ohm-cm
 
Thermal PropertiesMetricEnglishComments
Heat of Fusion 325 J/g140 BTU/lb
CTE, linear  26.8 µm/m-°C
@Temperature 0.000 - 100 °C
14.9 µin/in-°F
@Temperature 32.0 - 212 °F
 27.0 µm/m-°C
@Temperature 20.0 - 200 °C
15.0 µin/in-°F
@Temperature 68.0 - 392 °F
Estimated from similar Mg alloys
Specific Heat Capacity 1.00 J/g-°C0.239 BTU/lb-°F
Thermal Conductivity 92.0 W/m-K638 BTU-in/hr-ft²-°F
Melting Point 590 - 650 °C1090 - 1200 °F
Solidus 590 °C1090 °F
Liquidus 650 °C1200 °F
 
Component Elements PropertiesMetricEnglishComments
Copper, Cu <= 0.10 %<= 0.10 %
Magnesium, Mg 96 %96 %As Remainder
Nickel, Ni <= 0.010 %<= 0.010 %
Thorium, Th 2.5 - 4.0 %2.5 - 4.0 %
Zinc, Zn <= 0.30 %<= 0.30 %
Zirconium, Zr 0.40 - 1.0 %0.40 - 1.0 %

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MMHK31c / 147534

Specialty Compounds RTP Company

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