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Ductile Cast Iron vs. EN 1.3967 Stainless Steel

Both ductile cast iron and EN 1.3967 stainless steel are iron alloys. They have 55% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is ductile cast iron and the bottom bar is EN 1.3967 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 310
200
Elastic (Young's, Tensile) Modulus, GPa 170 to 180
200
Elongation at Break, % 2.1 to 20
22
Poisson's Ratio 0.28 to 0.31
0.28
Shear Modulus, GPa 64 to 70
79
Tensile Strength: Ultimate (UTS), MPa 460 to 920
690
Tensile Strength: Yield (Proof), MPa 310 to 670
350

Thermal Properties

Latent Heat of Fusion, J/g 270
300
Maximum Temperature: Mechanical, °C 290
1070
Melting Completion (Liquidus), °C 1160
1430
Melting Onset (Solidus), °C 1120
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
25
Density, g/cm3 7.1 to 7.5
7.9
Embodied Carbon, kg CO2/kg material 1.5
4.8
Embodied Energy, MJ/kg 21
66
Embodied Water, L/kg 43
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 17 to 80
130
Resilience: Unit (Modulus of Resilience), kJ/m3 280 to 1330
310
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
24
Strength to Weight: Bending, points 18 to 29
22
Thermal Shock Resistance, points 17 to 35
15

Alloy Composition

Carbon (C), % 3.0 to 3.5
0 to 0.030
Chromium (Cr), % 0
20 to 21.5
Iron (Fe), % 93.7 to 95.5
50.3 to 57.8
Manganese (Mn), % 0
4.0 to 6.0
Molybdenum (Mo), % 0
3.0 to 3.5
Nickel (Ni), % 0
15 to 17
Niobium (Nb), % 0
0 to 0.25
Nitrogen (N), % 0
0.2 to 0.35
Phosphorus (P), % 0 to 0.080
0 to 0.025
Silicon (Si), % 1.5 to 2.8
0 to 1.0
Sulfur (S), % 0
0 to 0.010