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Grey Cast Iron vs. N08535 Stainless Steel

Both grey cast iron and N08535 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 29 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is grey cast iron and the bottom bar is N08535 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180
200
Elongation at Break, % 9.6
46
Fatigue Strength, MPa 69 to 170
220
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 69
80
Shear Strength, MPa 180 to 610
400
Tensile Strength: Ultimate (UTS), MPa 160 to 450
570
Tensile Strength: Yield (Proof), MPa 98 to 290
240

Thermal Properties

Latent Heat of Fusion, J/g 280
310
Melting Completion (Liquidus), °C 1380
1420
Melting Onset (Solidus), °C 1180
1370
Specific Heat Capacity, J/kg-K 490
470
Thermal Conductivity, W/m-K 46
13
Thermal Expansion, µm/m-K 11
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 8.9
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
36
Density, g/cm3 7.5
8.1
Embodied Carbon, kg CO2/kg material 1.5
6.3
Embodied Energy, MJ/kg 21
87
Embodied Water, L/kg 44
230

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 13 to 37
210
Resilience: Unit (Modulus of Resilience), kJ/m3 27 to 240
140
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 Diffusivity, mm2/s 13
3.3
Thermal Shock Resistance, points 6.0 to 17
13

Alloy Composition

Carbon (C), % 3.1 to 3.4
0 to 0.030
Chromium (Cr), % 0
24 to 27
Copper (Cu), % 0
0 to 1.5
Iron (Fe), % 92.1 to 93.9
29.4 to 44.5
Manganese (Mn), % 0.5 to 0.7
0 to 1.0
Molybdenum (Mo), % 0
2.5 to 4.0
Nickel (Ni), % 0
29 to 36.5
Phosphorus (P), % 0 to 0.9
0 to 0.030
Silicon (Si), % 2.5 to 2.8
0 to 0.5
Sulfur (S), % 0 to 0.15
0 to 0.030