MakeItFrom.com
Menu (ESC)

ACI-ASTM CN7MS Steel vs. WE54A Magnesium

ACI-ASTM CN7MS steel belongs to the iron alloys classification, while WE54A magnesium belongs to the magnesium alloys. There are 28 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 ACI-ASTM CN7MS steel and the bottom bar is WE54A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
85
Elastic (Young's, Tensile) Modulus, GPa 200
44
Elongation at Break, % 39
4.3 to 5.6
Fatigue Strength, MPa 200
98 to 130
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
17
Tensile Strength: Ultimate (UTS), MPa 540
270 to 300
Tensile Strength: Yield (Proof), MPa 230
180

Thermal Properties

Latent Heat of Fusion, J/g 340
330
Maximum Temperature: Mechanical, °C 1040
170
Melting Completion (Liquidus), °C 1400
640
Melting Onset (Solidus), °C 1350
570
Specific Heat Capacity, J/kg-K 480
960
Thermal Conductivity, W/m-K 12
52
Thermal Expansion, µm/m-K 16
25

Otherwise Unclassified Properties

Base Metal Price, % relative 28
34
Density, g/cm3 7.9
1.9
Embodied Carbon, kg CO2/kg material 5.1
29
Embodied Energy, MJ/kg 71
260
Embodied Water, L/kg 180
900

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
10 to 14
Resilience: Unit (Modulus of Resilience), kJ/m3 140
360 to 380
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
62
Strength to Weight: Axial, points 19
39 to 43
Strength to Weight: Bending, points 19
49 to 51
Thermal Diffusivity, mm2/s 3.2
28
Thermal Shock Resistance, points 13
18 to 19

Alloy Composition

Carbon (C), % 0 to 0.070
0
Chromium (Cr), % 18 to 20
0
Copper (Cu), % 1.5 to 2.0
0 to 0.030
Iron (Fe), % 45.4 to 53.5
0 to 0.010
Lithium (Li), % 0
0 to 0.2
Magnesium (Mg), % 0
88.7 to 93.4
Manganese (Mn), % 0 to 1.0
0 to 0.030
Molybdenum (Mo), % 2.5 to 3.0
0
Nickel (Ni), % 22 to 25
0 to 0.0050
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 2.5 to 3.5
0 to 0.010
Sulfur (S), % 0 to 0.030
0
Unspecified Rare Earths, % 0
1.5 to 4.0
Yttrium (Y), % 0
4.8 to 5.5
Zinc (Zn), % 0
0 to 0.2
Zirconium (Zr), % 0
0.4 to 1.0
Residuals, % 0
0 to 0.3