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Automotive Malleable Cast Iron vs. EN 1.4951 Stainless Steel

Both automotive malleable cast iron and EN 1.4951 stainless steel are iron alloys. They have 54% of their average alloy composition in common. There are 28 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 automotive malleable cast iron and the bottom bar is EN 1.4951 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 130 to 290
170
Elastic (Young's, Tensile) Modulus, GPa 180
200
Elongation at Break, % 1.0 to 10
38
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 70
79
Tensile Strength: Ultimate (UTS), MPa 350 to 720
630
Tensile Strength: Yield (Proof), MPa 220 to 590
220

Thermal Properties

Latent Heat of Fusion, J/g 260
300
Melting Completion (Liquidus), °C 1410
1410
Melting Onset (Solidus), °C 1370
1360
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 41
15
Thermal Expansion, µm/m-K 14
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
25
Density, g/cm3 7.6
7.9
Embodied Carbon, kg CO2/kg material 1.5
4.3
Embodied Energy, MJ/kg 20
61
Embodied Water, L/kg 45
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.8 to 30
190
Resilience: Unit (Modulus of Resilience), kJ/m3 130 to 950
130
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 13 to 26
22
Strength to Weight: Bending, points 14 to 24
21
Thermal Diffusivity, mm2/s 11
3.9
Thermal Shock Resistance, points 9.9 to 21
14

Alloy Composition

Carbon (C), % 2.2 to 2.9
0.040 to 0.080
Chromium (Cr), % 0
24 to 26
Iron (Fe), % 93.6 to 96.7
49.1 to 57
Manganese (Mn), % 0.15 to 1.3
0 to 2.0
Nickel (Ni), % 0
19 to 22
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0.020 to 0.15
0 to 0.035
Silicon (Si), % 0.9 to 1.9
0 to 0.7
Sulfur (S), % 0.020 to 0.2
0 to 0.015