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AZ91C Magnesium vs. EN 1.4525 Stainless Steel

AZ91C magnesium belongs to the magnesium alloys classification, while EN 1.4525 stainless steel belongs to the iron alloys. There are 29 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 AZ91C magnesium and the bottom bar is EN 1.4525 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 46
190
Elongation at Break, % 2.3 to 7.9
5.6 to 13
Fatigue Strength, MPa 56 to 85
480 to 540
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 18
76
Tensile Strength: Ultimate (UTS), MPa 170 to 270
1030 to 1250
Tensile Strength: Yield (Proof), MPa 83 to 130
840 to 1120

Thermal Properties

Latent Heat of Fusion, J/g 350
280
Maximum Temperature: Mechanical, °C 130
860
Melting Completion (Liquidus), °C 600
1430
Melting Onset (Solidus), °C 470
1390
Specific Heat Capacity, J/kg-K 990
480
Thermal Conductivity, W/m-K 73
18
Thermal Expansion, µm/m-K 26
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.9 to 12
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 52 to 60
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 12
13
Density, g/cm3 1.7
7.8
Embodied Carbon, kg CO2/kg material 22
2.8
Embodied Energy, MJ/kg 160
39
Embodied Water, L/kg 990
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.2 to 16
68 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 75 to 180
1820 to 3230
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 69
25
Strength to Weight: Axial, points 27 to 43
36 to 45
Strength to Weight: Bending, points 39 to 53
29 to 33
Thermal Diffusivity, mm2/s 43
4.7
Thermal Shock Resistance, points 9.9 to 16
34 to 41

Alloy Composition

Aluminum (Al), % 8.1 to 9.3
0
Carbon (C), % 0
0 to 0.070
Chromium (Cr), % 0
15 to 17
Copper (Cu), % 0 to 0.1
2.5 to 4.0
Iron (Fe), % 0
70.4 to 79
Magnesium (Mg), % 88.6 to 91.4
0
Manganese (Mn), % 0.13 to 0.35
0 to 1.0
Molybdenum (Mo), % 0
0 to 0.8
Nickel (Ni), % 0 to 0.010
3.5 to 5.5
Niobium (Nb), % 0
0 to 0.35
Nitrogen (N), % 0
0 to 0.050
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0 to 0.3
0 to 0.8
Sulfur (S), % 0
0 to 0.025
Zinc (Zn), % 0.4 to 1.0
0
Residuals, % 0 to 0.3
0

Comparable Variants