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Magnesium
Magnesium Elektron - Service & Innovation in Magnesium

Magnesium Elektron Elektron® MSR-B Magnesium Casting Alloy, UNS M18220
Categories: Metal; Nonferrous Metal; Magnesium Alloy
Material Notes: ELEKTRON MSR-B is a high strength magnesium casting alloy developed by Magnesium Elektron to have good ambient and elevated temperature properties whilst retaining good foundry characteristics. It is a fully heat treatable magnesium alloy containing silver and rare earth metals. It is pressure tight, weldable and may be used up to temperatures of 200°C.

Applications: The alloys will be of interest to designers requiring good retention of properties at elevated temperatures for aerospace, automotive and military applications.

Information provided by Magnesium Elektron.
Key Words: AECMA MG-C-51; AFNOR G-Ag2.5TR; MOD DTD 5035A; UNS M18220; ISO 16220 MC65210
Vendors: Magnesium Elektron is the world leader in high strength magnesium alloys in rolled, extruded and cast forms. Phone (303) 589-3189 or visit www.magnesium-elektron.com.

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Physical PropertiesMetricEnglishComments
Specific Gravity 1.82 g/cc1.82 g/cc
Bulk Density 1.82 g/cc0.0658 lb/in³Value supplied by MatWeb
 
Mechanical PropertiesMetricEnglishComments
Hardness, Vickers 80 - 10580 - 105
Tensile Strength at Break >= 240 MPa>= 34800 psiMin Design Specification
 160 MPa
@Temperature 250 °C		23200 psi
@Temperature 482 °F
 185 MPa
@Temperature 200 °C		26800 psi
@Temperature 392 °F
 208 MPa
@Temperature 150 °C		30200 psi
@Temperature 302 °F
 230 MPa
@Temperature 100 °C		33400 psi
@Temperature 212 °F
 266 MPa
@Temperature 22.0 °C		38600 psi
@Temperature 71.6 °F
Tensile Strength, Yield >= 185 MPa
@Strain 0.2 %		>= 26800 psi
@Strain 0.2 %		Min Design Specification
 122 MPa
@Strain 0.2 %,
Temperature 250 °C		17700 psi
@Strain 0.2 %,
Temperature 482 °F
 165 MPa
@Strain 0.2 %,
Temperature 200 °C		23900 psi
@Strain 0.2 %,
Temperature 392 °F
 182 MPa
@Strain 0.2 %,
Temperature 150 °C		26400 psi
@Strain 0.2 %,
Temperature 302 °F
 195 MPa
@Strain 0.2 %,
Temperature 100 °C		28300 psi
@Strain 0.2 %,
Temperature 212 °F
 205 MPa
@Strain 0.2 %,
Temperature 22.0 °C		29700 psi
@Strain 0.2 %,
Temperature 71.6 °F
Elongation at Break >= 2.0 %>= 2.0 %Min Design Specification
 4.0 %
@Temperature 22.0 °C		4.0 %
@Temperature 71.6 °F		in 5.65 A½
 15 %
@Temperature 100 °C		15 %
@Temperature 212 °F
 19 %
@Temperature 150 °C		19 %
@Temperature 302 °F
 24 %
@Temperature 200 °C		24 %
@Temperature 392 °F
 30 %
@Temperature 250 °C		30 %
@Temperature 482 °F
Creep Strength  10.0 MPa
@Temperature 250 °C,
Time 3.60e+6 sec		1450 psi
@Temperature 482 °F,
Time 1000 hour		0.1% creep
 14.0 MPa
@Temperature 250 °C,
Time 1.80e+6 sec		2030 psi
@Temperature 482 °F,
Time 500 hour		0.1% creep
 16.0 MPa
@Temperature 250 °C,
Time 3.60e+6 sec		2320 psi
@Temperature 482 °F,
Time 1000 hour		0.2% creep
 21.0 MPa
@Temperature 250 °C,
Time 3.60e+6 sec		3050 psi
@Temperature 482 °F,
Time 1000 hour		0.3% creep
 22.0 MPa
@Temperature 250 °C,
Time 1.80e+6 sec		3190 psi
@Temperature 482 °F,
Time 500 hour		0.2% creep
 26.0 MPa
@Temperature 250 °C,
Time 360000 sec		3770 psi
@Temperature 482 °F,
Time 100 hour		0.1% creep
 27.0 MPa
@Temperature 250 °C,
Time 1.80e+6 sec		3920 psi
@Temperature 482 °F,
Time 500 hour		0.3% creep
 34.0 MPa
@Temperature 250 °C,
Time 360000 sec		4930 psi
@Temperature 482 °F,
Time 100 hour		0.2% creep
 41.0 MPa
@Temperature 250 °C,
Time 360000 sec		5950 psi
@Temperature 482 °F,
Time 100 hour		0.3% creep
 43.0 MPa
@Temperature 250 °C,
Time 36000 sec		6240 psi
@Temperature 482 °F,
Time 10.0 hour		0.1% creep
 46.0 MPa
@Temperature 200 °C,
Time 3.60e+6 sec		6670 psi
@Temperature 392 °F,
Time 1000 hour		0.1% creep
 54.0 MPa
@Temperature 200 °C,
Time 1.80e+6 sec		7830 psi
@Temperature 392 °F,
Time 500 hour		0.1% creep
 56.0 MPa
@Temperature 200 °C,
Time 3.60e+6 sec		8120 psi
@Temperature 392 °F,
Time 1000 hour		0.2% creep
 65.0 MPa
@Temperature 200 °C,
Time 1.80e+6 sec		9430 psi
@Temperature 392 °F,
Time 500 hour		0.2% creep
 72.0 MPa
@Temperature 200 °C,
Time 3.60e+6 sec		10400 psi
@Temperature 392 °F,
Time 1000 hour		0.3% creep
 74.0 MPa
@Temperature 200 °C,
Time 360000 sec		10700 psi
@Temperature 392 °F,
Time 100 hour		0.1% creep
 83.0 MPa
@Temperature 200 °C,
Time 1.80e+6 sec		12000 psi
@Temperature 392 °F,
Time 500 hour		0.3% creep
 86.0 MPa
@Temperature 200 °C,
Time 360000 sec		12500 psi
@Temperature 392 °F,
Time 100 hour		0.2% creep
 102 MPa
@Temperature 200 °C,
Time 36000 sec		14800 psi
@Temperature 392 °F,
Time 10.0 hour		0.1% creep
 103 MPa
@Temperature 200 °C,
Time 360000 sec		14900 psi
@Temperature 392 °F,
Time 100 hour		0.3% creep
 123 MPa
@Temperature 150 °C,
Time 3.60e+6 sec		17800 psi
@Temperature 302 °F,
Time 1000 hour		0.2% creep
 135 MPa
@Temperature 150 °C,
Time 1.80e+6 sec		19600 psi
@Temperature 302 °F,
Time 500 hour		0.2% creep
 151 MPa
@Temperature 150 °C,
Time 3.60e+6 sec		21900 psi
@Temperature 302 °F,
Time 1000 hour		0.3% creep
 160 MPa
@Temperature 150 °C,
Time 1.80e+6 sec		23200 psi
@Temperature 302 °F,
Time 500 hour		0.3% creep
Modulus of Elasticity 44.1 GPa6400 ksi
Compressive Yield Strength 165 - 200 MPa
@Strain 0.2 %		23900 - 29000 psi
@Strain 0.2 %
Compressive Strength 310 - 385 MPa45000 - 55800 psi
Poissons Ratio 0.300.30
Fatigue Strength 100 - 110 MPa
@# of Cycles 5.00e+7 		14500 - 16000 psi
@# of Cycles 5.00e+7 		Rotating Bend, Unnotched
Fracture Toughness 14.9 MPa-m½13.6 ksi-in½KIC
Shear Strength 152 MPa22000 psi
 
Electrical PropertiesMetricEnglishComments
Electrical Resistivity 0.00000680 ohm-cm0.00000680 ohm-cm
 
Thermal PropertiesMetricEnglishComments
CTE, linear 26.7 µm/m-°C14.8 µin/in-°F
Specific Heat Capacity 1.00 J/g-°C0.239 BTU/lb-°F
Thermal Conductivity 113 W/m-K784 BTU-in/hr-ft²-°F
Melting Point 550 - 640 °C1020 - 1180 °F
Solidus 550 °C1020 °F
Liquidus 640 °C1180 °F
Shrinkage 1.3 %1.3 %Pattern Makers Shrinkage Factor
 
Component Elements PropertiesMetricEnglishComments
Magnesium, Mg 93 - 95.6 %93 - 95.6 %As Balance
Rare Earths 2.0 - 3.0 %2.0 - 3.0 %
Silver, Ag 2.0 - 3.0 %2.0 - 3.0 %
Zirconium, Zr 0.40 - 1.0 %0.40 - 1.0 %
 
Descriptive Properties
Corrosion rate430 mpyASTM B117 Salt spray test
Damping Index0.4

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NMAGEL903 / 186918




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