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AISI 301 Stainless Steel vs. M1A Magnesium

AISI 301 stainless steel belongs to the iron alloys classification, while M1A magnesium belongs to the magnesium alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, 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 AISI 301 stainless steel and the bottom bar is M1A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
45
Elongation at Break, % 7.4 to 46
5.5
Fatigue Strength, MPa 210 to 600
88
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
18
Shear Strength, MPa 410 to 860
120
Tensile Strength: Ultimate (UTS), MPa 590 to 1460
230
Tensile Strength: Yield (Proof), MPa 230 to 1080
130

Thermal Properties

Latent Heat of Fusion, J/g 280
350
Maximum Temperature: Mechanical, °C 840
95
Melting Completion (Liquidus), °C 1420
610
Melting Onset (Solidus), °C 1400
580
Specific Heat Capacity, J/kg-K 480
990
Thermal Conductivity, W/m-K 16
150
Thermal Expansion, µm/m-K 17
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
35
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
190

Otherwise Unclassified Properties

Base Metal Price, % relative 13
12
Density, g/cm3 7.8
1.7
Embodied Carbon, kg CO2/kg material 2.7
24
Embodied Energy, MJ/kg 39
160
Embodied Water, L/kg 130
970

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 99 to 300
11
Resilience: Unit (Modulus of Resilience), kJ/m3 130 to 2970
180
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
71
Strength to Weight: Axial, points 21 to 52
38
Strength to Weight: Bending, points 20 to 37
49
Thermal Diffusivity, mm2/s 4.2
88
Thermal Shock Resistance, points 12 to 31
13

Alloy Composition

Calcium (Ca), % 0
0 to 0.3
Carbon (C), % 0 to 0.15
0
Chromium (Cr), % 16 to 18
0
Copper (Cu), % 0
0 to 0.050
Iron (Fe), % 70.7 to 78
0
Magnesium (Mg), % 0
97.2 to 98.8
Manganese (Mn), % 0 to 2.0
1.2 to 2.0
Nickel (Ni), % 6.0 to 8.0
0 to 0.010
Nitrogen (N), % 0 to 0.1
0
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 1.0
0 to 0.1
Sulfur (S), % 0 to 0.030
0
Residuals, % 0
0 to 0.3