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N08031 Stainless Steel vs. Automotive Malleable Cast Iron

Both N08031 stainless steel and automotive malleable cast iron are iron alloys. They have a modest 34% of their average alloy composition in common, which, by itself, doesn't mean much. 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 N08031 stainless steel and the bottom bar is automotive malleable cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
180
Elongation at Break, % 45
1.0 to 10
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 81
70
Tensile Strength: Ultimate (UTS), MPa 730
350 to 720
Tensile Strength: Yield (Proof), MPa 310
220 to 590

Thermal Properties

Latent Heat of Fusion, J/g 310
260
Melting Completion (Liquidus), °C 1440
1410
Melting Onset (Solidus), °C 1390
1370
Specific Heat Capacity, J/kg-K 460
480
Thermal Conductivity, W/m-K 12
41
Thermal Expansion, µm/m-K 18
14

Otherwise Unclassified Properties

Base Metal Price, % relative 39
1.9
Density, g/cm3 8.1
7.6
Embodied Carbon, kg CO2/kg material 7.1
1.5
Embodied Energy, MJ/kg 96
20
Embodied Water, L/kg 240
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 270
6.8 to 30
Resilience: Unit (Modulus of Resilience), kJ/m3 230
130 to 950
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 25
13 to 26
Strength to Weight: Bending, points 22
14 to 24
Thermal Diffusivity, mm2/s 3.1
11
Thermal Shock Resistance, points 14
9.9 to 21

Alloy Composition

Carbon (C), % 0 to 0.015
2.2 to 2.9
Chromium (Cr), % 26 to 28
0
Copper (Cu), % 1.0 to 1.4
0
Iron (Fe), % 29 to 36.9
93.6 to 96.7
Manganese (Mn), % 0 to 2.0
0.15 to 1.3
Molybdenum (Mo), % 6.0 to 7.0
0
Nickel (Ni), % 30 to 32
0
Nitrogen (N), % 0.15 to 0.25
0
Phosphorus (P), % 0 to 0.020
0.020 to 0.15
Silicon (Si), % 0 to 0.3
0.9 to 1.9
Sulfur (S), % 0 to 0.010
0.020 to 0.2