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SAE-AISI S5 Steel vs. Automotive Grey Cast Iron

Both SAE-AISI S5 steel and automotive grey cast iron are iron alloys. There are 23 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI S5 steel and the bottom bar is automotive grey cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
180
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 72
69 to 70
Tensile Strength: Ultimate (UTS), MPa 680 to 1940
140 to 290

Thermal Properties

Latent Heat of Fusion, J/g 280
260 to 280
Melting Completion (Liquidus), °C 1440
1380 to 1390
Melting Onset (Solidus), °C 1400
1340 to 1350
Specific Heat Capacity, J/kg-K 480
490
Thermal Conductivity, W/m-K 42
41 to 43
Thermal Expansion, µm/m-K 12
12 to 14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
7.4 to 7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
8.8 to 9.1

Otherwise Unclassified Properties

Base Metal Price, % relative 3.1
1.9 to 3.0
Density, g/cm3 7.7
7.5 to 7.6
Embodied Carbon, kg CO2/kg material 2.1
1.5 to 1.7
Embodied Energy, MJ/kg 29
21 to 24
Embodied Water, L/kg 51
44 to 51

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 25 to 70
5.2 to 11
Strength to Weight: Bending, points 22 to 45
8.0 to 13
Thermal Diffusivity, mm2/s 11
11 to 12
Thermal Shock Resistance, points 23 to 65
4.2 to 8.6