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Automotive Malleable Cast Iron vs. EN 1.4905 Stainless Steel

Both automotive malleable cast iron and EN 1.4905 stainless steel are iron alloys. They have 88% 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 automotive malleable cast iron and the bottom bar is EN 1.4905 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180
190
Elongation at Break, % 1.0 to 10
19
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 70
76
Tensile Strength: Ultimate (UTS), MPa 350 to 720
740
Tensile Strength: Yield (Proof), MPa 220 to 590
510

Thermal Properties

Latent Heat of Fusion, J/g 260
270
Melting Completion (Liquidus), °C 1410
1480
Melting Onset (Solidus), °C 1370
1440
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 41
26
Thermal Expansion, µm/m-K 14
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
3.7
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
4.2

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
9.5
Density, g/cm3 7.6
7.9
Embodied Carbon, kg CO2/kg material 1.5
2.8
Embodied Energy, MJ/kg 20
40
Embodied Water, L/kg 45
90

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.8 to 30
130
Resilience: Unit (Modulus of Resilience), kJ/m3 130 to 950
680
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 13 to 26
26
Strength to Weight: Bending, points 14 to 24
23
Thermal Diffusivity, mm2/s 11
7.0
Thermal Shock Resistance, points 9.9 to 21
25

Alloy Composition

Aluminum (Al), % 0
0 to 0.040
Boron (B), % 0
0.00050 to 0.0050
Carbon (C), % 2.2 to 2.9
0.090 to 0.13
Chromium (Cr), % 0
8.5 to 9.5
Iron (Fe), % 93.6 to 96.7
86.2 to 88.8
Manganese (Mn), % 0.15 to 1.3
0.3 to 0.6
Molybdenum (Mo), % 0
0.9 to 1.1
Nickel (Ni), % 0
0.1 to 0.4
Niobium (Nb), % 0
0.060 to 0.1
Nitrogen (N), % 0
0.050 to 0.090
Phosphorus (P), % 0.020 to 0.15
0 to 0.020
Silicon (Si), % 0.9 to 1.9
0.1 to 0.5
Sulfur (S), % 0.020 to 0.2
0 to 0.010
Tungsten (W), % 0
0.9 to 1.1
Vanadium (V), % 0
0.18 to 0.25