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Annealed SAE-AISI H19 vs. ISO-WD21150-O

Annealed SAE-AISI H19 belongs to the iron alloys classification, while ISO-WD21150-O belongs to the magnesium alloys. There are 21 material properties with values for both materials. Properties with values for just one material (11, 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 annealed SAE-AISI H19 and the bottom bar is ISO-WD21150-O.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
45
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 75
17
Tensile Strength: Ultimate (UTS), MPa 720
240

Thermal Properties

Latent Heat of Fusion, J/g 260
350
Melting Completion (Liquidus), °C 1540
600
Melting Onset (Solidus), °C 1490
550
Specific Heat Capacity, J/kg-K 460
990
Thermal Conductivity, W/m-K 29
100
Thermal Expansion, µm/m-K 12
27

Otherwise Unclassified Properties

Base Metal Price, % relative 22
12
Density, g/cm3 8.2
1.7
Embodied Carbon, kg CO2/kg material 7.5
23
Embodied Energy, MJ/kg 110
160
Embodied Water, L/kg 110
980

Common Calculations

Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 24
70
Strength to Weight: Axial, points 24
40
Strength to Weight: Bending, points 22
52
Thermal Diffusivity, mm2/s 7.9
60
Thermal Shock Resistance, points 21
15

Alloy Composition

Aluminum (Al), % 0
2.4 to 3.6
Carbon (C), % 0.32 to 0.45
0
Chromium (Cr), % 4.0 to 4.8
0
Cobalt (Co), % 4.0 to 4.5
0
Copper (Cu), % 0 to 0.25
0 to 0.050
Iron (Fe), % 81.4 to 85.5
0 to 0.0050
Magnesium (Mg), % 0
94 to 97
Manganese (Mn), % 0.2 to 0.5
0.15 to 0.4
Molybdenum (Mo), % 0.3 to 0.55
0
Nickel (Ni), % 0 to 0.3
0 to 0.0050
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0.2 to 0.5
0 to 0.1
Sulfur (S), % 0 to 0.030
0
Tungsten (W), % 3.8 to 4.5
0
Vanadium (V), % 1.8 to 2.2
0
Zinc (Zn), % 0
0.5 to 1.5
Residuals, % 0
0 to 0.3