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AZ91A Magnesium vs. AISI 410 Stainless Steel

AZ91A magnesium belongs to the magnesium alloys classification, while AISI 410 stainless steel belongs to the iron alloys. There are 31 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 AZ91A magnesium and the bottom bar is AISI 410 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 63
190 to 240
Elastic (Young's, Tensile) Modulus, GPa 46
190
Elongation at Break, % 5.0
16 to 22
Fatigue Strength, MPa 99
190 to 350
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 18
76
Shear Strength, MPa 140
330 to 470
Tensile Strength: Ultimate (UTS), MPa 240
520 to 770
Tensile Strength: Yield (Proof), MPa 160
290 to 580

Thermal Properties

Latent Heat of Fusion, J/g 360
270
Maximum Temperature: Mechanical, °C 130
710
Melting Completion (Liquidus), °C 600
1530
Melting Onset (Solidus), °C 470
1480
Specific Heat Capacity, J/kg-K 990
480
Thermal Conductivity, W/m-K 73
30
Thermal Expansion, µm/m-K 26
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 10
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 52
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 12
7.0
Density, g/cm3 1.7
7.7
Embodied Carbon, kg CO2/kg material 22
1.9
Embodied Energy, MJ/kg 160
27
Embodied Water, L/kg 990
100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11
97 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 280
210 to 860
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 69
25
Strength to Weight: Axial, points 38
19 to 28
Strength to Weight: Bending, points 49
19 to 24
Thermal Diffusivity, mm2/s 42
8.1
Thermal Shock Resistance, points 14
18 to 26

Alloy Composition

Aluminum (Al), % 8.3 to 9.7
0
Carbon (C), % 0
0.080 to 0.15
Chromium (Cr), % 0
11.5 to 13.5
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 0
83.5 to 88.4
Magnesium (Mg), % 88.2 to 91.2
0
Manganese (Mn), % 0.13 to 0.5
0 to 1.0
Nickel (Ni), % 0 to 0.030
0 to 0.75
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 0.35 to 1.0
0