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SAE-AISI D5 Steel vs. Nickel 718

SAE-AISI D5 steel belongs to the iron alloys classification, while nickel 718 belongs to the nickel alloys. They have a modest 32% of their average alloy composition in common, which, by itself, doesn't mean much. There are 25 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI D5 steel and the bottom bar is nickel 718.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 5.4 to 14
12 to 50
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
75
Shear Strength, MPa 470 to 1180
660 to 950
Tensile Strength: Ultimate (UTS), MPa 770 to 2030
930 to 1530

Thermal Properties

Latent Heat of Fusion, J/g 270
310
Melting Completion (Liquidus), °C 1430
1340
Melting Onset (Solidus), °C 1390
1260
Specific Heat Capacity, J/kg-K 480
450
Thermal Conductivity, W/m-K 27
11
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 4.2
1.4
Electrical Conductivity: Equal Weight (Specific), % IACS 4.9
1.5

Otherwise Unclassified Properties

Base Metal Price, % relative 13
75
Density, g/cm3 7.7
8.3
Embodied Carbon, kg CO2/kg material 3.5
13
Embodied Energy, MJ/kg 51
190
Embodied Water, L/kg 120
250

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 28 to 73
31 to 51
Strength to Weight: Bending, points 24 to 46
25 to 35
Thermal Diffusivity, mm2/s 7.4
3.0
Thermal Shock Resistance, points 26 to 67
27 to 44

Alloy Composition

Aluminum (Al), % 0
0.2 to 0.8
Boron (B), % 0
0 to 0.0060
Carbon (C), % 1.4 to 1.6
0 to 0.080
Chromium (Cr), % 11 to 13
17 to 21
Cobalt (Co), % 2.5 to 3.5
0 to 1.0
Copper (Cu), % 0 to 0.25
0 to 0.3
Iron (Fe), % 77.9 to 84.4
11.1 to 24.6
Manganese (Mn), % 0 to 0.6
0 to 0.35
Molybdenum (Mo), % 0.7 to 1.2
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 to 0.6
0 to 0.35
Sulfur (S), % 0 to 0.030
0 to 0.015
Titanium (Ti), % 0
0.65 to 1.2
Vanadium (V), % 0 to 1.0
0