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ACI-ASTM CD3MWCuN Steel vs. Grey Cast Iron

Both ACI-ASTM CD3MWCuN steel and grey cast iron are iron alloys. They have 62% 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 ACI-ASTM CD3MWCuN steel and the bottom bar is grey cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
180
Elongation at Break, % 29
9.6
Fatigue Strength, MPa 370
69 to 170
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 80
69
Tensile Strength: Ultimate (UTS), MPa 790
160 to 450
Tensile Strength: Yield (Proof), MPa 500
98 to 290

Thermal Properties

Latent Heat of Fusion, J/g 300
280
Melting Completion (Liquidus), °C 1460
1380
Melting Onset (Solidus), °C 1410
1180
Specific Heat Capacity, J/kg-K 470
490
Thermal Conductivity, W/m-K 16
46
Thermal Expansion, µm/m-K 13
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
8.9

Otherwise Unclassified Properties

Base Metal Price, % relative 22
1.9
Density, g/cm3 7.9
7.5
Embodied Carbon, kg CO2/kg material 4.2
1.5
Embodied Energy, MJ/kg 58
21
Embodied Water, L/kg 180
44

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
13 to 37
Resilience: Unit (Modulus of Resilience), kJ/m3 620
27 to 240
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 28
5.8 to 17
Strength to Weight: Bending, points 24
8.7 to 17
Thermal Diffusivity, mm2/s 4.2
13
Thermal Shock Resistance, points 22
6.0 to 17

Alloy Composition

Carbon (C), % 0 to 0.030
3.1 to 3.4
Chromium (Cr), % 24 to 26
0
Copper (Cu), % 0.5 to 1.0
0
Iron (Fe), % 56.6 to 65.3
92.1 to 93.9
Manganese (Mn), % 0 to 1.5
0.5 to 0.7
Molybdenum (Mo), % 3.0 to 4.0
0
Nickel (Ni), % 6.5 to 8.5
0
Nitrogen (N), % 0.2 to 0.3
0
Phosphorus (P), % 0 to 0.030
0 to 0.9
Silicon (Si), % 0 to 1.0
2.5 to 2.8
Sulfur (S), % 0 to 0.025
0 to 0.15
Tungsten (W), % 0.5 to 1.0
0