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M1A Magnesium vs. S17600 Stainless Steel

M1A magnesium belongs to the magnesium alloys classification, while S17600 stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (5, 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 M1A magnesium and the bottom bar is S17600 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
200
Elongation at Break, % 5.5
8.6 to 11
Fatigue Strength, MPa 88
300 to 680
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 18
76
Shear Strength, MPa 120
560 to 880
Tensile Strength: Ultimate (UTS), MPa 230
940 to 1490
Tensile Strength: Yield (Proof), MPa 130
580 to 1310

Thermal Properties

Latent Heat of Fusion, J/g 350
290
Maximum Temperature: Mechanical, °C 95
890
Melting Completion (Liquidus), °C 610
1430
Melting Onset (Solidus), °C 580
1390
Specific Heat Capacity, J/kg-K 990
480
Thermal Conductivity, W/m-K 150
15
Thermal Expansion, µm/m-K 26
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 35
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 190
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 12
13
Density, g/cm3 1.7
7.8
Embodied Carbon, kg CO2/kg material 24
2.9
Embodied Energy, MJ/kg 160
42
Embodied Water, L/kg 970
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11
70 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 180
850 to 4390
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 71
25
Strength to Weight: Axial, points 38
34 to 54
Strength to Weight: Bending, points 49
28 to 37
Thermal Diffusivity, mm2/s 88
4.1
Thermal Shock Resistance, points 13
31 to 50

Alloy Composition

Aluminum (Al), % 0
0 to 0.4
Calcium (Ca), % 0 to 0.3
0
Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0
16 to 17.5
Copper (Cu), % 0 to 0.050
0
Iron (Fe), % 0
71.3 to 77.6
Magnesium (Mg), % 97.2 to 98.8
0
Manganese (Mn), % 1.2 to 2.0
0 to 1.0
Nickel (Ni), % 0 to 0.010
6.0 to 7.5
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.1
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0
0.4 to 1.2
Residuals, % 0 to 0.3
0