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SAE-AISI H24 Steel vs. Nickel 718

SAE-AISI H24 steel belongs to the iron alloys classification, while nickel 718 belongs to the nickel alloys. They have a modest 22% of their average alloy composition in common, which, by itself, doesn't mean much. There are 21 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI H24 steel and the bottom bar is nickel 718.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 78
75
Tensile Strength: Ultimate (UTS), MPa 720 to 1990
930 to 1530

Thermal Properties

Latent Heat of Fusion, J/g 240
310
Melting Completion (Liquidus), °C 1750
1340
Melting Onset (Solidus), °C 1700
1260
Specific Heat Capacity, J/kg-K 420
450
Thermal Conductivity, W/m-K 27
11
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 37
75
Density, g/cm3 9.1
8.3
Embodied Carbon, kg CO2/kg material 6.1
13
Embodied Energy, MJ/kg 93
190
Embodied Water, L/kg 78
250

Common Calculations

Stiffness to Weight: Axial, points 12
13
Stiffness to Weight: Bending, points 22
23
Strength to Weight: Axial, points 22 to 61
31 to 51
Strength to Weight: Bending, points 20 to 39
25 to 35
Thermal Diffusivity, mm2/s 6.9
3.0
Thermal Shock Resistance, points 22 to 61
27 to 44

Alloy Composition

Aluminum (Al), % 0
0.2 to 0.8
Boron (B), % 0
0 to 0.0060
Carbon (C), % 0.42 to 0.53
0 to 0.080
Chromium (Cr), % 2.5 to 3.5
17 to 21
Cobalt (Co), % 0
0 to 1.0
Copper (Cu), % 0 to 0.25
0 to 0.3
Iron (Fe), % 78 to 82.4
11.1 to 24.6
Manganese (Mn), % 0.15 to 0.4
0 to 0.35
Molybdenum (Mo), % 0
2.8 to 3.3
Nickel (Ni), % 0 to 0.3
50 to 55
Niobium (Nb), % 0
4.8 to 5.5
Phosphorus (P), % 0 to 0.030
0 to 0.015
Silicon (Si), % 0.15 to 0.4
0 to 0.35
Sulfur (S), % 0 to 0.030
0 to 0.015
Titanium (Ti), % 0
0.65 to 1.2
Tungsten (W), % 14 to 16
0
Vanadium (V), % 0.4 to 0.6
0