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Ductile Cast Iron vs. AISI 316L Stainless Steel

Both ductile cast iron and AISI 316L stainless steel are iron alloys. They have 67% 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 AISI 316L stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 310
170 to 350
Elastic (Young's, Tensile) Modulus, GPa 170 to 180
200
Elongation at Break, % 2.1 to 20
9.0 to 50
Poisson's Ratio 0.28 to 0.31
0.28
Shear Modulus, GPa 64 to 70
78
Shear Strength, MPa 420 to 800
370 to 690
Tensile Strength: Ultimate (UTS), MPa 460 to 920
530 to 1160
Tensile Strength: Yield (Proof), MPa 310 to 670
190 to 870

Thermal Properties

Latent Heat of Fusion, J/g 270
290
Maximum Temperature: Mechanical, °C 290
870
Melting Completion (Liquidus), °C 1160
1400
Melting Onset (Solidus), °C 1120
1380
Specific Heat Capacity, J/kg-K 490
470
Thermal Conductivity, W/m-K 31 to 36
15
Thermal Expansion, µm/m-K 11
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8 to 9.4
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
19
Density, g/cm3 7.1 to 7.5
7.9
Embodied Carbon, kg CO2/kg material 1.5
3.9
Embodied Energy, MJ/kg 21
53
Embodied Water, L/kg 43
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 17 to 80
77 to 230
Resilience: Unit (Modulus of Resilience), kJ/m3 280 to 1330
93 to 1880
Stiffness to Weight: Axial, points 12 to 14
14
Stiffness to Weight: Bending, points 24 to 26
25
Strength to Weight: Axial, points 17 to 35
19 to 41
Strength to Weight: Bending, points 18 to 29
18 to 31
Thermal Diffusivity, mm2/s 8.9 to 10
4.1
Thermal Shock Resistance, points 17 to 35
12 to 25

Alloy Composition

Carbon (C), % 3.0 to 3.5
0 to 0.030
Chromium (Cr), % 0
16 to 18
Iron (Fe), % 93.7 to 95.5
62 to 72
Manganese (Mn), % 0
0 to 2.0
Molybdenum (Mo), % 0
2.0 to 3.0
Nickel (Ni), % 0
10 to 14
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0 to 0.080
0 to 0.045
Silicon (Si), % 1.5 to 2.8
0 to 0.75
Sulfur (S), % 0
0 to 0.030

Comparable Variants