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Austenitic Nodular Cast Iron vs. SAE-AISI P21 Steel

Both austenitic nodular cast iron and SAE-AISI P21 steel are iron alloys. There are 19 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 austenitic nodular cast iron and the bottom bar is SAE-AISI P21 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180 to 190
190
Poisson's Ratio 0.29 to 0.3
0.29
Shear Modulus, GPa 70 to 72
73
Tensile Strength: Ultimate (UTS), MPa 430 to 500
1130

Thermal Properties

Latent Heat of Fusion, J/g 280 to 350
250
Melting Completion (Liquidus), °C 1340 to 1400
1450
Melting Onset (Solidus), °C 1300 to 1360
1410
Specific Heat Capacity, J/kg-K 470 to 490
470
Thermal Expansion, µm/m-K 13 to 14
12

Otherwise Unclassified Properties

Base Metal Price, % relative 16 to 25
6.5
Density, g/cm3 7.7 to 8.0
7.9
Embodied Carbon, kg CO2/kg material 3.5 to 4.9
2.3
Embodied Energy, MJ/kg 48 to 68
32
Embodied Water, L/kg 91 to 120
62

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24 to 25
24
Strength to Weight: Axial, points 15 to 18
40
Strength to Weight: Bending, points 16 to 18
31
Thermal Shock Resistance, points 12 to 15
37