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EN 1.3549 Stainless Steel vs. Ductile Cast Iron

Both EN 1.3549 stainless steel and ductile cast iron are iron alloys. They have 81% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is EN 1.3549 stainless steel and the bottom bar is ductile cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220
160 to 310
Elastic (Young's, Tensile) Modulus, GPa 200
170 to 180
Poisson's Ratio 0.28
0.28 to 0.31
Shear Modulus, GPa 77
64 to 70
Tensile Strength: Ultimate (UTS), MPa 730
460 to 920

Thermal Properties

Latent Heat of Fusion, J/g 280
270
Maximum Temperature: Mechanical, °C 910
290
Melting Completion (Liquidus), °C 1430
1160
Melting Onset (Solidus), °C 1390
1120
Specific Heat Capacity, J/kg-K 480
490
Thermal Conductivity, W/m-K 21
31 to 36
Thermal Expansion, µm/m-K 10
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
8.8 to 9.4

Otherwise Unclassified Properties

Base Metal Price, % relative 10
1.9
Density, g/cm3 7.7
7.1 to 7.5
Embodied Carbon, kg CO2/kg material 2.6
1.5
Embodied Energy, MJ/kg 37
21
Embodied Water, L/kg 130
43

Common Calculations

Stiffness to Weight: Axial, points 14
12 to 14
Stiffness to Weight: Bending, points 25
24 to 26
Strength to Weight: Axial, points 27
17 to 35
Strength to Weight: Bending, points 24
18 to 29
Thermal Diffusivity, mm2/s 5.6
8.9 to 10
Thermal Shock Resistance, points 26
17 to 35

Alloy Composition

Carbon (C), % 0.85 to 1.0
3.0 to 3.5
Chromium (Cr), % 17 to 19
0
Iron (Fe), % 77.5 to 82
93.7 to 95.5
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 0.9 to 1.3
0
Phosphorus (P), % 0 to 0.040
0 to 0.080
Silicon (Si), % 0 to 1.0
1.5 to 2.8
Sulfur (S), % 0 to 0.030
0
Vanadium (V), % 0.070 to 0.12
0