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EV31A Magnesium vs. AISI 202 Stainless Steel

EV31A magnesium belongs to the magnesium alloys classification, while AISI 202 stainless steel belongs to the iron alloys. There are 25 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is EV31A magnesium and the bottom bar is AISI 202 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 70
210 to 300
Elastic (Young's, Tensile) Modulus, GPa 44
200
Elongation at Break, % 3.5
14 to 45
Fatigue Strength, MPa 120
290 to 330
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 17
77
Shear Strength, MPa 170
490 to 590
Tensile Strength: Ultimate (UTS), MPa 260
700 to 980
Tensile Strength: Yield (Proof), MPa 170
310 to 580

Thermal Properties

Maximum Temperature: Mechanical, °C 200
910
Melting Onset (Solidus), °C 590
1360
Specific Heat Capacity, J/kg-K 1000
480
Thermal Conductivity, W/m-K 86
15
Thermal Expansion, µm/m-K 27
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 18
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 90
2.9

Otherwise Unclassified Properties

Density, g/cm3 1.8
7.7

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 8.1
120 to 260
Resilience: Unit (Modulus of Resilience), kJ/m3 330
250 to 840
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 65
25
Strength to Weight: Axial, points 40
25 to 35
Strength to Weight: Bending, points 50
23 to 29
Thermal Diffusivity, mm2/s 47
4.0
Thermal Shock Resistance, points 16
15 to 21