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Austenitic Grey Cast Iron vs. SAE-AISI 5140 Steel

Both austenitic grey cast iron and SAE-AISI 5140 steel are iron alloys. There are 20 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is austenitic grey cast iron and the bottom bar is SAE-AISI 5140 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 110 to 210
170 to 290
Elastic (Young's, Tensile) Modulus, GPa 180
190
Poisson's Ratio 0.29 to 0.3
0.29
Shear Modulus, GPa 69 to 72
73
Tensile Strength: Ultimate (UTS), MPa 150 to 230
560 to 970

Thermal Properties

Latent Heat of Fusion, J/g 280 to 350
250
Melting Completion (Liquidus), °C 1340 to 1400
1460
Melting Onset (Solidus), °C 1290 to 1350
1420
Specific Heat Capacity, J/kg-K 470 to 490
470
Thermal Expansion, µm/m-K 13 to 14
13

Otherwise Unclassified Properties

Base Metal Price, % relative 14 to 24
2.1
Density, g/cm3 7.7 to 8.1
7.8
Embodied Carbon, kg CO2/kg material 3.1 to 4.7
1.4
Embodied Energy, MJ/kg 43 to 65
19
Embodied Water, L/kg 93 to 120
49

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23 to 25
24
Strength to Weight: Axial, points 5.3 to 8.2
20 to 34
Strength to Weight: Bending, points 7.9 to 11
19 to 28
Thermal Shock Resistance, points 4.5 to 6.5
16 to 29