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Grey Cast Iron vs. N08366 Stainless Steel

Both grey cast iron and N08366 stainless steel are iron alloys. They have 48% of their average alloy composition in common. There are 30 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 N08366 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 300
180
Elastic (Young's, Tensile) Modulus, GPa 180
210
Elongation at Break, % 9.6
34
Fatigue Strength, MPa 69 to 170
190
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 69
80
Shear Strength, MPa 180 to 610
390
Tensile Strength: Ultimate (UTS), MPa 160 to 450
590
Tensile Strength: Yield (Proof), MPa 98 to 290
240

Thermal Properties

Latent Heat of Fusion, J/g 280
310
Melting Completion (Liquidus), °C 1380
1460
Melting Onset (Solidus), °C 1180
1410
Specific Heat Capacity, J/kg-K 490
460
Thermal Conductivity, W/m-K 46
13
Thermal Expansion, µm/m-K 11
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 8.9
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
33
Density, g/cm3 7.5
8.1
Embodied Carbon, kg CO2/kg material 1.5
6.2
Embodied Energy, MJ/kg 21
84
Embodied Water, L/kg 44
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 13 to 37
160
Resilience: Unit (Modulus of Resilience), kJ/m3 27 to 240
150
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
3.4
Thermal Shock Resistance, points 6.0 to 17
13

Alloy Composition

Carbon (C), % 3.1 to 3.4
0 to 0.035
Chromium (Cr), % 0
20 to 22
Iron (Fe), % 92.1 to 93.9
42.4 to 50.5
Manganese (Mn), % 0.5 to 0.7
0 to 2.0
Molybdenum (Mo), % 0
6.0 to 7.0
Nickel (Ni), % 0
23.5 to 25.5
Phosphorus (P), % 0 to 0.9
0 to 0.040
Silicon (Si), % 2.5 to 2.8
0 to 1.0
Sulfur (S), % 0 to 0.15
0 to 0.030