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EN 1.4525 Stainless Steel vs. EV31A Magnesium

EN 1.4525 stainless steel belongs to the iron alloys classification, while EV31A magnesium belongs to the magnesium alloys. There are 23 material properties with values for both materials. Properties with values for just one material (12, 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 EN 1.4525 stainless steel and the bottom bar is EV31A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
44
Elongation at Break, % 5.6 to 13
3.5
Fatigue Strength, MPa 480 to 540
120
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 76
17
Tensile Strength: Ultimate (UTS), MPa 1030 to 1250
260
Tensile Strength: Yield (Proof), MPa 840 to 1120
170

Thermal Properties

Maximum Temperature: Mechanical, °C 860
200
Melting Onset (Solidus), °C 1390
590
Specific Heat Capacity, J/kg-K 480
1000
Thermal Conductivity, W/m-K 18
86
Thermal Expansion, µm/m-K 11
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
18
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
90

Otherwise Unclassified Properties

Density, g/cm3 7.8
1.8

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 68 to 130
8.1
Resilience: Unit (Modulus of Resilience), kJ/m3 1820 to 3230
330
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
65
Strength to Weight: Axial, points 36 to 45
40
Strength to Weight: Bending, points 29 to 33
50
Thermal Diffusivity, mm2/s 4.7
47
Thermal Shock Resistance, points 34 to 41
16