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EN 1.4849 Stainless Steel vs. M1A Magnesium

EN 1.4849 stainless steel belongs to the iron alloys classification, while M1A magnesium belongs to the magnesium alloys. There are 27 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 1.4849 stainless steel and the bottom bar is M1A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
45
Elongation at Break, % 4.5
5.5
Fatigue Strength, MPa 120
88
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
18
Tensile Strength: Ultimate (UTS), MPa 480
230
Tensile Strength: Yield (Proof), MPa 250
130

Thermal Properties

Latent Heat of Fusion, J/g 320
350
Maximum Temperature: Mechanical, °C 1020
95
Melting Completion (Liquidus), °C 1390
610
Melting Onset (Solidus), °C 1340
580
Specific Heat Capacity, J/kg-K 480
990
Thermal Conductivity, W/m-K 12
150
Thermal Expansion, µm/m-K 15
26

Otherwise Unclassified Properties

Base Metal Price, % relative 42
12
Density, g/cm3 8.0
1.7
Embodied Carbon, kg CO2/kg material 7.1
24
Embodied Energy, MJ/kg 100
160
Embodied Water, L/kg 200
970

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 18
11
Resilience: Unit (Modulus of Resilience), kJ/m3 160
180
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 24
71
Strength to Weight: Axial, points 17
38
Strength to Weight: Bending, points 17
49
Thermal Diffusivity, mm2/s 3.2
88
Thermal Shock Resistance, points 11
13

Alloy Composition

Calcium (Ca), % 0
0 to 0.3
Carbon (C), % 0.3 to 0.5
0
Chromium (Cr), % 18 to 21
0
Copper (Cu), % 0
0 to 0.050
Iron (Fe), % 32.6 to 43.5
0
Magnesium (Mg), % 0
97.2 to 98.8
Manganese (Mn), % 0 to 2.0
1.2 to 2.0
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 36 to 39
0 to 0.010
Niobium (Nb), % 1.2 to 1.8
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 1.0 to 2.5
0 to 0.1
Sulfur (S), % 0 to 0.030
0
Residuals, % 0
0 to 0.3