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AZ91D Magnesium vs. EN 1.4835 Stainless Steel

AZ91D magnesium belongs to the magnesium alloys classification, while EN 1.4835 stainless steel belongs to the iron alloys. There are 31 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 AZ91D magnesium and the bottom bar is EN 1.4835 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 60 to 80
180
Elastic (Young's, Tensile) Modulus, GPa 46
200
Elongation at Break, % 2.3 to 4.5
43
Fatigue Strength, MPa 74 to 85
310
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 18
77
Shear Strength, MPa 120 to 140
520
Tensile Strength: Ultimate (UTS), MPa 160 to 220
750
Tensile Strength: Yield (Proof), MPa 80 to 130
350

Thermal Properties

Latent Heat of Fusion, J/g 350
320
Maximum Temperature: Mechanical, °C 130
1150
Melting Completion (Liquidus), °C 600
1400
Melting Onset (Solidus), °C 490
1360
Specific Heat Capacity, J/kg-K 990
490
Thermal Conductivity, W/m-K 78
15
Thermal Expansion, µm/m-K 27
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 58
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 12
17
Density, g/cm3 1.7
7.7
Embodied Carbon, kg CO2/kg material 22
3.3
Embodied Energy, MJ/kg 160
47
Embodied Water, L/kg 990
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.2 to 7.7
270
Resilience: Unit (Modulus of Resilience), kJ/m3 69 to 170
310
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 69
25
Strength to Weight: Axial, points 26 to 34
27
Strength to Weight: Bending, points 38 to 46
24
Thermal Diffusivity, mm2/s 45
4.0
Thermal Shock Resistance, points 9.5 to 13
16

Alloy Composition

Aluminum (Al), % 8.3 to 9.7
0
Carbon (C), % 0
0.050 to 0.12
Cerium (Ce), % 0
0.030 to 0.080
Chromium (Cr), % 0
20 to 22
Copper (Cu), % 0 to 0.030
0
Iron (Fe), % 0 to 0.0050
62 to 68.4
Magnesium (Mg), % 88.7 to 91.2
0
Manganese (Mn), % 0.15 to 0.5
0 to 1.0
Nickel (Ni), % 0 to 0.0020
10 to 12
Nitrogen (N), % 0
0.12 to 0.2
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0 to 0.1
1.4 to 2.5
Sulfur (S), % 0
0 to 0.015
Zinc (Zn), % 0.35 to 1.0
0