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Austenitic Grey Cast Iron vs. S38815 Stainless Steel

Both austenitic grey cast iron and S38815 stainless steel are iron alloys. There are 21 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is austenitic grey cast iron and the bottom bar is S38815 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 110 to 210
190
Elastic (Young's, Tensile) Modulus, GPa 180
190
Poisson's Ratio 0.29 to 0.3
0.29
Shear Modulus, GPa 69 to 72
74
Tensile Strength: Ultimate (UTS), MPa 150 to 230
610

Thermal Properties

Latent Heat of Fusion, J/g 280 to 350
370
Melting Completion (Liquidus), °C 1340 to 1400
1360
Melting Onset (Solidus), °C 1290 to 1350
1310
Specific Heat Capacity, J/kg-K 470 to 490
500
Thermal Expansion, µm/m-K 13 to 14
15

Otherwise Unclassified Properties

Base Metal Price, % relative 14 to 24
19
Density, g/cm3 7.7 to 8.1
7.5
Embodied Carbon, kg CO2/kg material 3.1 to 4.7
3.8
Embodied Energy, MJ/kg 43 to 65
54
Embodied Water, L/kg 93 to 120
140

Common Calculations

PREN (Pitting Resistance) 2.0 to 5.0
18
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23 to 25
25
Strength to Weight: Axial, points 5.3 to 8.2
22
Strength to Weight: Bending, points 7.9 to 11
21
Thermal Shock Resistance, points 4.5 to 6.5
15