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EN 1.4971 Stainless Steel vs. EZ33A Magnesium

EN 1.4971 stainless steel belongs to the iron alloys classification, while EZ33A magnesium belongs to the magnesium alloys. There are 29 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 1.4971 stainless steel and the bottom bar is EZ33A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 240
55
Elastic (Young's, Tensile) Modulus, GPa 210
44
Elongation at Break, % 34
2.6
Fatigue Strength, MPa 270
70
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 81
17
Shear Strength, MPa 530
140
Tensile Strength: Ultimate (UTS), MPa 800
150
Tensile Strength: Yield (Proof), MPa 340
100

Thermal Properties

Latent Heat of Fusion, J/g 300
330
Maximum Temperature: Mechanical, °C 1100
250
Melting Completion (Liquidus), °C 1460
640
Melting Onset (Solidus), °C 1410
570
Specific Heat Capacity, J/kg-K 450
970
Thermal Conductivity, W/m-K 13
100
Thermal Expansion, µm/m-K 15
27

Otherwise Unclassified Properties

Base Metal Price, % relative 70
25
Density, g/cm3 8.4
1.9
Embodied Carbon, kg CO2/kg material 7.6
25
Embodied Energy, MJ/kg 110
190
Embodied Water, L/kg 300
930

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
3.6
Resilience: Unit (Modulus of Resilience), kJ/m3 280
120
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
61
Strength to Weight: Axial, points 26
22
Strength to Weight: Bending, points 23
33
Thermal Diffusivity, mm2/s 3.4
54
Thermal Shock Resistance, points 19
9.2

Alloy Composition

Carbon (C), % 0.080 to 0.16
0
Chromium (Cr), % 20 to 22.5
0
Cobalt (Co), % 18.5 to 21
0
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 24.3 to 37.1
0
Magnesium (Mg), % 0
91.5 to 95
Manganese (Mn), % 0 to 2.0
0
Molybdenum (Mo), % 2.5 to 3.5
0
Nickel (Ni), % 19 to 21
0 to 0.010
Niobium (Nb), % 0.75 to 1.3
0
Nitrogen (N), % 0.1 to 0.2
0
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.015
0
Tungsten (W), % 2.0 to 3.0
0
Unspecified Rare Earths, % 0
2.5 to 4.0
Zinc (Zn), % 0
2.0 to 3.1
Zirconium (Zr), % 0
0.5 to 1.0
Residuals, % 0
0 to 0.3