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Ductile Cast Iron vs. N08700 Stainless Steel

Both ductile cast iron and N08700 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 (6, in this case) are not shown.

For each property being compared, the top bar is ductile cast iron and the bottom bar is N08700 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 310
170
Elastic (Young's, Tensile) Modulus, GPa 170 to 180
200
Elongation at Break, % 2.1 to 20
32
Poisson's Ratio 0.28 to 0.31
0.28
Shear Modulus, GPa 64 to 70
79
Shear Strength, MPa 420 to 800
410
Tensile Strength: Ultimate (UTS), MPa 460 to 920
620
Tensile Strength: Yield (Proof), MPa 310 to 670
270

Thermal Properties

Latent Heat of Fusion, J/g 270
300
Maximum Temperature: Mechanical, °C 290
1100
Melting Completion (Liquidus), °C 1160
1450
Melting Onset (Solidus), °C 1120
1400
Specific Heat Capacity, J/kg-K 490
470
Thermal Conductivity, W/m-K 31 to 36
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 8.8 to 9.4
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
32
Density, g/cm3 7.1 to 7.5
8.1
Embodied Carbon, kg CO2/kg material 1.5
6.0
Embodied Energy, MJ/kg 21
82
Embodied Water, L/kg 43
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 17 to 80
160
Resilience: Unit (Modulus of Resilience), kJ/m3 280 to 1330
180
Stiffness to Weight: Axial, points 12 to 14
14
Stiffness to Weight: Bending, points 24 to 26
24
Strength to Weight: Axial, points 17 to 35
21
Strength to Weight: Bending, points 18 to 29
20
Thermal Diffusivity, mm2/s 8.9 to 10
3.5
Thermal Shock Resistance, points 17 to 35
14

Alloy Composition

Carbon (C), % 3.0 to 3.5
0 to 0.040
Chromium (Cr), % 0
19 to 23
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 93.7 to 95.5
42 to 52.7
Manganese (Mn), % 0
0 to 2.0
Molybdenum (Mo), % 0
4.3 to 5.0
Nickel (Ni), % 0
24 to 26
Niobium (Nb), % 0
0 to 0.4
Phosphorus (P), % 0 to 0.080
0 to 0.040
Silicon (Si), % 1.5 to 2.8
0 to 1.0
Sulfur (S), % 0
0 to 0.030