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Ductile Cast Iron vs. EN 1.4855 Stainless Steel

Both ductile cast iron and EN 1.4855 stainless steel are iron alloys. They have 49% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is ductile cast iron and the bottom bar is EN 1.4855 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 310
150
Elastic (Young's, Tensile) Modulus, GPa 170 to 180
200
Elongation at Break, % 2.1 to 20
4.6
Poisson's Ratio 0.28 to 0.31
0.28
Shear Modulus, GPa 64 to 70
77
Tensile Strength: Ultimate (UTS), MPa 460 to 920
500
Tensile Strength: Yield (Proof), MPa 310 to 670
250

Thermal Properties

Latent Heat of Fusion, J/g 270
320
Maximum Temperature: Mechanical, °C 290
1050
Melting Completion (Liquidus), °C 1160
1400
Melting Onset (Solidus), °C 1120
1350
Specific Heat Capacity, J/kg-K 490
480
Thermal Conductivity, W/m-K 31 to 36
14
Thermal Expansion, µm/m-K 11
16

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
34
Density, g/cm3 7.1 to 7.5
7.8
Embodied Carbon, kg CO2/kg material 1.5
5.9
Embodied Energy, MJ/kg 21
85
Embodied Water, L/kg 43
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 17 to 80
19
Resilience: Unit (Modulus of Resilience), kJ/m3 280 to 1330
160
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
18
Strength to Weight: Bending, points 18 to 29
18
Thermal Diffusivity, mm2/s 8.9 to 10
3.7
Thermal Shock Resistance, points 17 to 35
11

Alloy Composition

Carbon (C), % 3.0 to 3.5
0.3 to 0.5
Chromium (Cr), % 0
23 to 25
Iron (Fe), % 93.7 to 95.5
42.6 to 51.9
Manganese (Mn), % 0
0 to 2.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0
23 to 25
Niobium (Nb), % 0
0.8 to 1.8
Phosphorus (P), % 0 to 0.080
0 to 0.040
Silicon (Si), % 1.5 to 2.8
1.0 to 2.5
Sulfur (S), % 0
0 to 0.030