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SAE-AISI 6150 Steel vs. Automotive Malleable Cast Iron

Both SAE-AISI 6150 steel and automotive malleable cast iron are iron alloys. They have a very high 97% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 6150 steel and the bottom bar is automotive malleable cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 350
130 to 290
Elastic (Young's, Tensile) Modulus, GPa 190
180
Elongation at Break, % 15 to 23
1.0 to 10
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
70
Tensile Strength: Ultimate (UTS), MPa 630 to 1200
350 to 720
Tensile Strength: Yield (Proof), MPa 420 to 1160
220 to 590

Thermal Properties

Latent Heat of Fusion, J/g 250
260
Melting Completion (Liquidus), °C 1460
1410
Melting Onset (Solidus), °C 1410
1370
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 46
41
Thermal Expansion, µm/m-K 12 to 13
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 2.3
1.9
Density, g/cm3 7.8
7.6
Embodied Carbon, kg CO2/kg material 2.0
1.5
Embodied Energy, MJ/kg 28
20
Embodied Water, L/kg 51
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130 to 180
6.8 to 30
Resilience: Unit (Modulus of Resilience), kJ/m3 460 to 3590
130 to 950
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 22 to 43
13 to 26
Strength to Weight: Bending, points 21 to 32
14 to 24
Thermal Diffusivity, mm2/s 13
11
Thermal Shock Resistance, points 20 to 38
9.9 to 21

Alloy Composition

Carbon (C), % 0.48 to 0.53
2.2 to 2.9
Chromium (Cr), % 0.8 to 1.1
0
Iron (Fe), % 96.7 to 97.7
93.6 to 96.7
Manganese (Mn), % 0.7 to 0.9
0.15 to 1.3
Phosphorus (P), % 0 to 0.035
0.020 to 0.15
Silicon (Si), % 0.15 to 0.35
0.9 to 1.9
Sulfur (S), % 0 to 0.040
0.020 to 0.2
Vanadium (V), % 0.15 to 0.3
0

Comparable Variants