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Grey Cast Iron vs. S35135 Stainless Steel

Both grey cast iron and S35135 stainless steel are iron alloys. They have a modest 38% 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 (9, in this case) are not shown.

For each property being compared, the top bar is grey cast iron and the bottom bar is S35135 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180
200
Elongation at Break, % 9.6
34
Fatigue Strength, MPa 69 to 170
180
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 69
79
Shear Strength, MPa 180 to 610
390
Tensile Strength: Ultimate (UTS), MPa 160 to 450
590
Tensile Strength: Yield (Proof), MPa 98 to 290
230

Thermal Properties

Latent Heat of Fusion, J/g 280
320
Melting Completion (Liquidus), °C 1380
1430
Melting Onset (Solidus), °C 1180
1380
Specific Heat Capacity, J/kg-K 490
470
Thermal Expansion, µm/m-K 11
16

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
37
Density, g/cm3 7.5
8.1
Embodied Carbon, kg CO2/kg material 1.5
6.8
Embodied Energy, MJ/kg 21
94
Embodied Water, L/kg 44
220

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 13 to 37
160
Resilience: Unit (Modulus of Resilience), kJ/m3 27 to 240
130
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 5.8 to 17
20
Strength to Weight: Bending, points 8.7 to 17
19
Thermal Shock Resistance, points 6.0 to 17
13

Alloy Composition

Carbon (C), % 3.1 to 3.4
0 to 0.080
Chromium (Cr), % 0
20 to 25
Copper (Cu), % 0
0 to 0.75
Iron (Fe), % 92.1 to 93.9
28.3 to 45
Manganese (Mn), % 0.5 to 0.7
0 to 1.0
Molybdenum (Mo), % 0
4.0 to 4.8
Nickel (Ni), % 0
30 to 38
Phosphorus (P), % 0 to 0.9
0 to 0.045
Silicon (Si), % 2.5 to 2.8
0.6 to 1.0
Sulfur (S), % 0 to 0.15
0 to 0.015
Titanium (Ti), % 0
0.4 to 1.0