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Magnesium
Magnesium Elektron - Service & Innovation in Magnesium

Magnesium Elektron Elektron® AZ31B Magnesium Extrusion Alloy, UNS M11311
Categories: Metal; Nonferrous Metal; Magnesium Alloy
Material Notes: AZ31B is a wrought magnesium base alloy with good room-temperature strength and ductility combined with corrosion resistance and weldability. Increased strength is obtained by strain hardening with a subsequent partial anneal (H24 and H26 tempers).

Applications: Sheet and plate in AZ31B find application in medium strength service at temperatures below 150°C. Diverse uses including aircraft fuselage, concrete tools, cell phone/camera/notebook computer cases, speaker cones and textile machinery can all benefit from light weight AZ31B. AZ31B is non-magnetic and has high electrical and thermal conductivity filling the requirements for RFI and EMI shielding in the electronics and computer industries. Superplastic forming of AZ31B sheet at elevated temperatures allows production of a wide variety of intricate parts for automotive uses. Monocoque construction utilizing formed sheet can be adapted to many commercial applications.

Information provided by Magnesium Elektron.
Key Words: UNS M11311; AMS 4375; AMS 4376; AMS 4377; AMS 4382; ASTM B90
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.

Click here to view all available suppliers for this material.

Please click here if you are a supplier and would like information on how to add your listing to this material.
 
Physical PropertiesMetricEnglishComments
Specific Gravity 1.78 g/cc1.78 g/cc
 
Mechanical PropertiesMetricEnglishComments
Hardness, Rockwell E 6767O temper
 8383H24 temper
Tensile Strength at Break  30.0 MPa
@Temperature 300 °C		4350 psi
@Temperature 572 °F
 95.0 MPa
@Temperature 200 °C		13800 psi
@Temperature 392 °F
 200 MPa
@Temperature 100 °C		29000 psi
@Temperature 212 °F
 220 MPa
@Thickness 0.500 - 1.50 mm		31900 psi
@Thickness 0.0197 - 0.0591 in		AZ31B-O
 220 MPa
@Thickness 1.50 - 6.30 mm		31900 psi
@Thickness 0.0591 - 0.248 in		AZ31B-O
 220 MPa
@Thickness 6.30 - 7.50 mm		31900 psi
@Thickness 0.248 - 0.295 in		AZ31B-O
 235 MPa
@Thickness 25.0 - 50.0 mm		34100 psi
@Thickness 0.984 - 1.97 in		AZ31B-H24
 235 MPa
@Thickness 50.0 - 75.0 mm		34100 psi
@Thickness 1.97 - 2.95 in		AZ31B-H24
 240 MPa
@Thickness 25.0 - 50.0 mm		34800 psi
@Thickness 0.984 - 1.97 in		AZ31B-H26
 245 MPa
@Thickness 12.7 - 25.0 mm		35500 psi
@Thickness 0.500 - 0.984 in		AZ31B-H24
 255 MPa
@Thickness 9.50 - 12.7 mm		37000 psi
@Thickness 0.374 - 0.500 in		AZ31B-H24
 255 MPa
@Thickness 12.7 - 25.0 mm		37000 psi
@Thickness 0.500 - 0.984 in		AZ31B-H26
 255 MPa
@Thickness 25.0 - 75.0 mm		37000 psi
@Thickness 0.984 - 2.95 in
 260 MPa
@Thickness 6.30 - 12.7 mm		37700 psi
@Thickness 0.248 - 0.500 in		AZ31B-H26
 260 MPa
@Thickness 6.30 - 9.50 mm		37700 psi
@Thickness 0.248 - 0.374 in		AZ31B-H24
 265 MPa
@Thickness 10.0 - 25.0 mm		38400 psi
@Thickness 0.394 - 0.984 in
 270 MPa
@Thickness 0.500 - 6.30 mm		39200 psi
@Thickness 0.0197 - 0.248 in		AZ31B-H24
 275 MPa
@Thickness 5.00 - 10.0 mm		39900 psi
@Thickness 0.197 - 0.394 in
 290 MPa
@Thickness 0.500 - 6.00 mm		42100 psi
@Thickness 0.0197 - 0.236 in
Tensile Strength, Yield  25.0 MPa
@Strain 0.2 %,
Temperature 300 °C		3630 psi
@Strain 0.2 %,
Temperature 572 °F
 50.0 MPa
@Strain 0.2 %,
Temperature 200 °C		7250 psi
@Strain 0.2 %,
Temperature 392 °F
 150 MPa
@Strain 0.2 %,
Temperature 100 °C		21800 psi
@Strain 0.2 %,
Temperature 212 °F
 105 MPa
@Strain 0.2 %,
Thickness 1.50 - 6.30 mm		15200 psi
@Strain 0.2 %,
Thickness 0.0591 - 0.248 in		AZ31B-O
 105 MPa
@Strain 0.2 %,
Thickness 6.30 - 7.50 mm		15200 psi
@Strain 0.2 %,
Thickness 0.248 - 0.295 in		AZ31B-O
 125 MPa
@Strain 0.2 %,
Thickness 50.0 - 75.0 mm		18100 psi
@Strain 0.2 %,
Thickness 1.97 - 2.95 in		AZ31B-H24
 125 MPa
@Strain 0.2 %,
Thickness 0.500 - 1.50 mm		18100 psi
@Strain 0.2 %,
Thickness 0.0197 - 0.0591 in		AZ31B-O
 135 MPa
@Strain 0.2 %,
Thickness 25.0 - 50.0 mm		19600 psi
@Strain 0.2 %,
Thickness 0.984 - 1.97 in		AZ31B-H24
 145 MPa
@Strain 0.2 %,
Thickness 25.0 - 50.0 mm		21000 psi
@Strain 0.2 %,
Thickness 0.984 - 1.97 in		AZ31B-H26
 150 MPa
@Strain 0.2 %,
Thickness 25.0 - 75.0 mm		21800 psi
@Strain 0.2 %,
Thickness 0.984 - 2.95 in
 150 MPa
@Strain 0.2 %,
Thickness 12.7 - 25.0 mm		21800 psi
@Strain 0.2 %,
Thickness 0.500 - 0.984 in		AZ31B-H24
 160 MPa
@Strain 0.2 %,
Thickness 12.7 - 25.0 mm		23200 psi
@Strain 0.2 %,
Thickness 0.500 - 0.984 in		AZ31B-H26
 165 MPa
@Strain 0.2 %,
Thickness 9.50 - 12.7 mm		23900 psi
@Strain 0.2 %,
Thickness 0.374 - 0.500 in		AZ31B-H24
 175 MPa
@Strain 0.2 %,
Thickness 10.0 - 25.0 mm		25400 psi
@Strain 0.2 %,
Thickness 0.394 - 0.984 in
 180 MPa
@Strain 0.2 %,
Thickness 6.30 - 12.7 mm		26100 psi
@Strain 0.2 %,
Thickness 0.248 - 0.500 in		AZ31B-H26
 180 MPa
@Strain 0.2 %,
Thickness 6.30 - 9.50 mm		26100 psi
@Strain 0.2 %,
Thickness 0.248 - 0.374 in		AZ31B-H24
 200 MPa
@Strain 0.2 %,
Thickness 0.500 - 6.30 mm		29000 psi
@Strain 0.2 %,
Thickness 0.0197 - 0.248 in		AZ31B-H24
 200 MPa
@Strain 0.2 %,
Thickness 6.00 - 10.0 mm		29000 psi
@Strain 0.2 %,
Thickness 0.236 - 0.394 in
 220 MPa
@Strain 0.2 %,
Thickness 0.500 - 6.00 mm		31900 psi
@Strain 0.2 %,
Thickness 0.0197 - 0.236 in
Elongation at Break  35 %
@Temperature 100 °C		35 %
@Temperature 212 °F
 85 %
@Temperature 200 °C		85 %
@Temperature 392 °F
 135 %
@Temperature 300 °C		135 %
@Temperature 572 °F
 5.0 %
@Thickness 6.30 - 12.7 mm		5.0 %
@Thickness 0.248 - 0.500 in		AZ31B-H26
 5.0 %
@Thickness 12.7 - 25.0 mm		5.0 %
@Thickness 0.500 - 0.984 in		AZ31B-H26
 5.0 %
@Thickness 25.0 - 50.0 mm		5.0 %
@Thickness 0.984 - 1.97 in		AZ31B-H26
 5.0 %
@Thickness 0.500 - 6.30 mm		5.0 %
@Thickness 0.0197 - 0.248 in		AZ31B-H24
 7.0 %
@Thickness 6.30 - 9.50 mm		7.0 %
@Thickness 0.248 - 0.374 in		AZ31B-H24
 7.0 %
@Thickness 9.50 - 12.7 mm		7.0 %
@Thickness 0.374 - 0.500 in		AZ31B-H24
 7.0 %
@Thickness 12.7 - 25.0 mm		7.0 %
@Thickness 0.500 - 0.984 in		AZ31B-H24
 7.0 %
@Thickness 25.0 - 50.0 mm		7.0 %
@Thickness 0.984 - 1.97 in		AZ31B-H24
 7.0 %
@Thickness 50.0 - 75.0 mm		7.0 %
@Thickness 1.97 - 2.95 in		AZ31B-H24
 8.0 %
@Thickness 6.30 - 7.50 mm		8.0 %
@Thickness 0.248 - 0.295 in		AZ31B-O
 10 %
@Thickness 0.500 - 1.50 mm		10 %
@Thickness 0.0197 - 0.0591 in		AZ31B-O
 10 %
@Thickness 1.50 - 6.30 mm		10 %
@Thickness 0.0591 - 0.248 in		AZ31B-O
 13 %
@Thickness 0.500 - 6.00 mm,
Temperature 22.0 °C		13 %
@Thickness 0.0197 - 0.236 in,
Temperature 71.6 °F
 13 %
@Thickness 25.0 - 75.0 mm,
Temperature 22.0 °C		13 %
@Thickness 0.984 - 2.95 in,
Temperature 71.6 °F
 15 %
@Thickness 5.00 - 10.0 mm,
Temperature 22.0 °C		15 %
@Thickness 0.197 - 0.394 in,
Temperature 71.6 °F
 16 %
@Thickness 10.0 - 25.0 mm,
Temperature 22.0 °C		16 %
@Thickness 0.394 - 0.984 in,
Temperature 71.6 °F
Creep Strength  10.0 MPa
@Temperature 150 °C,
Time 360000 sec		1450 psi
@Temperature 302 °F,
Time 100 hour		0.1% creep
 20.0 MPa
@Temperature 150 °C,
Time 36000 sec		2900 psi
@Temperature 302 °F,
Time 10.0 hour		0.1% creep
 25.0 MPa
@Temperature 150 °C,
Time 360000 sec		3630 psi
@Temperature 302 °F,
Time 100 hour		0.2% creep
 30.0 MPa
@Temperature 100 °C,
Time 360000 sec		4350 psi
@Temperature 212 °F,
Time 100 hour		0.1% creep
 35.0 MPa
@Temperature 100 °C,
Time 36000 sec		5080 psi
@Temperature 212 °F,
Time 10.0 hour		0.1% creep
 35.0 MPa
@Temperature 150 °C,
Time 36000 sec		5080 psi
@Temperature 302 °F,
Time 10.0 hour		0.2% creep
 40.0 MPa
@Temperature 150 °C,
Time 360000 sec		5800 psi
@Temperature 302 °F,
Time 100 hour		0.5% creep
 50.0 MPa
@Temperature 150 °C,
Time 36000 sec		7250 psi
@Temperature 302 °F,
Time 10.0 hour		0.5% creep
 50.0 MPa
@Temperature 100 °C,
Time 360000 sec		7250 psi
@Temperature 212 °F,
Time 100 hour		0.2% creep
 60.0 MPa
@Temperature 100 °C,
Time 36000 sec		8700 psi
@Temperature 212 °F,
Time 10.0 hour		0.2% creep
 85.0 MPa
@Temperature 100 °C,
Time 360000 sec		12300 psi
@Temperature 212 °F,
Time 100 hour		0.5% creep
 95.0 MPa
@Temperature 100 °C,
Time 36000 sec		13800 psi
@Temperature 212 °F,
Time 10.0 hour		0.5% creep
 102 MPa
@Temperature 100 °C,
Time 360000 sec		14800 psi
@Temperature 212 °F,
Time 100 hour		1% creep
 110 MPa
@Temperature 100 °C,
Time 36000 sec		16000 psi
@Temperature 212 °F,
Time 10.0 hour		1% creep
Modulus of Elasticity 45.0 GPa6530 ksi
Compressive Yield Strength  85.0 MPa
@Strain 0.2 %,
Thickness 50.0 - 75.0 mm		12300 psi
@Strain 0.2 %,
Thickness 1.97 - 2.95 in
 95.0 MPa
@Strain 0.2 %,
Thickness 25.0 - 50.0 mm		13800 psi
@Strain 0.2 %,
Thickness 0.984 - 1.97 in
 120 MPa
@Strain 0.2 %,
Thickness 10.0 - 25.0 mm		17400 psi
@Strain 0.2 %,
Thickness 0.394 - 0.984 in
 160 MPa
@Strain 0.2 %,
Thickness 6.00 - 10.0 mm		23200 psi
@Strain 0.2 %,
Thickness 0.236 - 0.394 in
 180 MPa
@Strain 0.2 %,
Thickness 0.500 - 6.00 mm		26100 psi
@Strain 0.2 %,
Thickness 0.0197 - 0.236 in
Poissons Ratio 0.350.35
Fatigue Strength  110 MPa
@# of Cycles 1.00e+7 		16000 psi
@# of Cycles 1.00e+7 		Cantilever bending
 125 MPa
@# of Cycles 1.00e+6 		18100 psi
@# of Cycles 1.00e+6 		Cantilever bending
 150 MPa
@# of Cycles 100000 		21800 psi
@# of Cycles 100000 		Cantilever bending
Fracture Toughness 28.0 MPa-m½25.5 ksi-in½KIC
Shear Strength  180 MPa
@Thickness 10.0 - 75.0 mm		26100 psi
@Thickness 0.394 - 2.95 in
 195 MPa
@Thickness 6.00 - 10.0 mm		28300 psi
@Thickness 0.236 - 0.394 in
 200 MPa
@Thickness 0.500 - 6.00 mm		29000 psi
@Thickness 0.0197 - 0.236 in
 
Electrical PropertiesMetricEnglishComments
Electrical Resistivity 0.00000920 ohm-cm0.00000920 ohm-cm
 
Thermal PropertiesMetricEnglishComments
CTE, linear 26.8 µm/m-°C14.9 µin/in-°F
Specific Heat Capacity 1.04 J/g-°C0.249 BTU/lb-°F
Thermal Conductivity 76.9 W/m-K534 BTU-in/hr-ft²-°F
Melting Point 566 - 632 °C1050 - 1170 °F
Solidus 566 °C1050 °F
Liquidus 632 °C1170 °F
 
Component Elements PropertiesMetricEnglishComments
Aluminum, Al 2.5 - 3.5 %2.5 - 3.5 %
Magnesium, Mg 94.2 - 96.6 %94.2 - 96.6 %As Balance
Manganese, Mn 0.20 - 1.0 %0.20 - 1.0 %
Zinc, Zn 0.70 - 1.3 %0.70 - 1.3 %

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