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ASTM Grade HP Steel vs. ISO-WD32350 Magnesium

ASTM grade HP steel belongs to the iron alloys classification, while ISO-WD32350 magnesium belongs to the magnesium alloys. There are 27 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 ASTM grade HP steel and the bottom bar is ISO-WD32350 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
45
Elongation at Break, % 5.1
5.7 to 10
Fatigue Strength, MPa 130
120 to 130
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
18
Tensile Strength: Ultimate (UTS), MPa 490
250 to 290
Tensile Strength: Yield (Proof), MPa 260
140 to 180

Thermal Properties

Latent Heat of Fusion, J/g 320
340
Maximum Temperature: Mechanical, °C 1100
95
Melting Completion (Liquidus), °C 1370
600
Melting Onset (Solidus), °C 1330
560
Specific Heat Capacity, J/kg-K 480
990
Thermal Conductivity, W/m-K 12
130
Thermal Expansion, µm/m-K 16
25

Otherwise Unclassified Properties

Base Metal Price, % relative 34
12
Density, g/cm3 7.9
1.7
Embodied Carbon, kg CO2/kg material 5.8
23
Embodied Energy, MJ/kg 82
160
Embodied Water, L/kg 220
960

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 21
14 to 23
Resilience: Unit (Modulus of Resilience), kJ/m3 170
210 to 380
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
68
Strength to Weight: Axial, points 17
39 to 46
Strength to Weight: Bending, points 17
50 to 55
Thermal Diffusivity, mm2/s 3.2
73
Thermal Shock Resistance, points 11
16 to 18

Alloy Composition

Aluminum (Al), % 0
0 to 0.1
Carbon (C), % 0.35 to 0.75
0
Chromium (Cr), % 24 to 28
0
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 29.2 to 42.7
0 to 0.060
Magnesium (Mg), % 0
95.7 to 97.7
Manganese (Mn), % 0 to 2.0
0.6 to 1.3
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 33 to 37
0 to 0.0050
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 2.5
0 to 0.1
Sulfur (S), % 0 to 0.040
0
Zinc (Zn), % 0
1.8 to 2.3
Residuals, % 0
0 to 0.3