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EN 1.4658 Stainless Steel vs. M1A Magnesium

EN 1.4658 stainless steel belongs to the iron alloys classification, while M1A magnesium belongs to the magnesium alloys. There are 28 material properties with values for both materials. Properties with values for just one material (6, 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 1.4658 stainless steel and the bottom bar is M1A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
45
Elongation at Break, % 28
5.5
Fatigue Strength, MPa 530
88
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 81
18
Shear Strength, MPa 580
120
Tensile Strength: Ultimate (UTS), MPa 900
230
Tensile Strength: Yield (Proof), MPa 730
130

Thermal Properties

Latent Heat of Fusion, J/g 300
350
Maximum Temperature: Mechanical, °C 1100
95
Melting Completion (Liquidus), °C 1450
610
Melting Onset (Solidus), °C 1400
580
Specific Heat Capacity, J/kg-K 470
990
Thermal Conductivity, W/m-K 16
150
Thermal Expansion, µm/m-K 13
26

Otherwise Unclassified Properties

Base Metal Price, % relative 25
12
Density, g/cm3 7.8
1.7
Embodied Carbon, kg CO2/kg material 4.5
24
Embodied Energy, MJ/kg 61
160
Embodied Water, L/kg 200
970

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
11
Resilience: Unit (Modulus of Resilience), kJ/m3 1280
180
Stiffness to Weight: Axial, points 15
15
Stiffness to Weight: Bending, points 25
71
Strength to Weight: Axial, points 32
38
Strength to Weight: Bending, points 26
49
Thermal Diffusivity, mm2/s 4.3
88
Thermal Shock Resistance, points 24
13

Alloy Composition

Calcium (Ca), % 0
0 to 0.3
Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 26 to 29
0
Cobalt (Co), % 0.5 to 2.0
0
Copper (Cu), % 0 to 1.0
0 to 0.050
Iron (Fe), % 50.9 to 63.7
0
Magnesium (Mg), % 0
97.2 to 98.8
Manganese (Mn), % 0 to 1.5
1.2 to 2.0
Molybdenum (Mo), % 4.0 to 5.0
0
Nickel (Ni), % 5.5 to 9.5
0 to 0.010
Nitrogen (N), % 0.3 to 0.5
0
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0 to 0.5
0 to 0.1
Sulfur (S), % 0 to 0.010
0
Residuals, % 0
0 to 0.3