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ACI-ASTM CK35MN Steel vs. Grey Cast Iron

Both ACI-ASTM CK35MN steel and grey cast iron are iron alloys. They have 49% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CK35MN steel and the bottom bar is grey cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
160 to 300
Elastic (Young's, Tensile) Modulus, GPa 210
180
Elongation at Break, % 40
9.6
Fatigue Strength, MPa 270
69 to 170
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 81
69
Tensile Strength: Ultimate (UTS), MPa 650
160 to 450
Tensile Strength: Yield (Proof), MPa 310
98 to 290

Thermal Properties

Latent Heat of Fusion, J/g 310
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 12
46
Thermal Expansion, µm/m-K 16
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
8.9

Otherwise Unclassified Properties

Base Metal Price, % relative 31
1.9
Density, g/cm3 8.0
7.5
Embodied Carbon, kg CO2/kg material 5.9
1.5
Embodied Energy, MJ/kg 81
21
Embodied Water, L/kg 210
44

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 210
13 to 37
Resilience: Unit (Modulus of Resilience), kJ/m3 240
27 to 240
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 22
5.8 to 17
Strength to Weight: Bending, points 21
8.7 to 17
Thermal Diffusivity, mm2/s 3.3
13
Thermal Shock Resistance, points 14
6.0 to 17

Alloy Composition

Carbon (C), % 0 to 0.035
3.1 to 3.4
Chromium (Cr), % 22 to 24
0
Copper (Cu), % 0 to 0.4
0
Iron (Fe), % 43.4 to 51.8
92.1 to 93.9
Manganese (Mn), % 0 to 2.0
0.5 to 0.7
Molybdenum (Mo), % 6.0 to 6.8
0
Nickel (Ni), % 20 to 22
0
Nitrogen (N), % 0.21 to 0.32
0
Phosphorus (P), % 0 to 0.035
0 to 0.9
Silicon (Si), % 0 to 1.0
2.5 to 2.8
Sulfur (S), % 0 to 0.020
0 to 0.15