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ACI-ASTM CK35MN Steel vs. Austempered Cast Iron

Both ACI-ASTM CK35MN steel and austempered cast iron are iron alloys. They have 50% of their average alloy composition in common. There are 26 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 CK35MN steel and the bottom bar is austempered cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
270 to 490
Elastic (Young's, Tensile) Modulus, GPa 210
180
Elongation at Break, % 40
1.1 to 13
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 81
62 to 69
Tensile Strength: Ultimate (UTS), MPa 650
860 to 1800
Tensile Strength: Yield (Proof), MPa 310
560 to 1460

Thermal Properties

Latent Heat of Fusion, J/g 310
280
Melting Completion (Liquidus), °C 1460
1380
Melting Onset (Solidus), °C 1410
1340
Specific Heat Capacity, J/kg-K 470
490
Thermal Conductivity, W/m-K 12
42
Thermal Expansion, µm/m-K 16
13

Otherwise Unclassified Properties

Base Metal Price, % relative 31
2.9
Density, g/cm3 8.0
7.5
Embodied Carbon, kg CO2/kg material 5.9
1.8
Embodied Energy, MJ/kg 81
25
Embodied Water, L/kg 210
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 210
19 to 95
Resilience: Unit (Modulus of Resilience), kJ/m3 240
880 to 3970
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 22
32 to 66
Strength to Weight: Bending, points 21
27 to 44
Thermal Diffusivity, mm2/s 3.3
11
Thermal Shock Resistance, points 14
25 to 53

Alloy Composition

Aluminum (Al), % 0
0 to 0.050
Arsenic (As), % 0
0 to 0.020
Carbon (C), % 0 to 0.035
3.4 to 3.8
Chromium (Cr), % 22 to 24
0 to 0.1
Copper (Cu), % 0 to 0.4
0 to 0.8
Iron (Fe), % 43.4 to 51.8
89.6 to 94
Magnesium (Mg), % 0
0 to 0.040
Manganese (Mn), % 0 to 2.0
0.3 to 0.4
Molybdenum (Mo), % 6.0 to 6.8
0 to 0.3
Nickel (Ni), % 20 to 22
0 to 2.0
Nitrogen (N), % 0.21 to 0.32
0
Phosphorus (P), % 0 to 0.035
0 to 0.040
Selenium (Se), % 0
0 to 0.030
Silicon (Si), % 0 to 1.0
2.3 to 2.7
Sulfur (S), % 0 to 0.020
0 to 0.020
Tin (Sn), % 0
0 to 0.020
Vanadium (V), % 0
0 to 0.1