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ACI-ASTM CG6MMN Steel vs. Grey Cast Iron

Both ACI-ASTM CG6MMN steel and grey cast iron are iron alloys. They have 58% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CG6MMN 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 200
180
Elongation at Break, % 34
9.6
Fatigue Strength, MPa 260
69 to 170
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 79
69
Tensile Strength: Ultimate (UTS), MPa 670
160 to 450
Tensile Strength: Yield (Proof), MPa 320
98 to 290

Thermal Properties

Latent Heat of Fusion, J/g 300
280
Melting Completion (Liquidus), °C 1420
1380
Melting Onset (Solidus), °C 1380
1180
Specific Heat Capacity, J/kg-K 480
490
Thermal Expansion, µm/m-K 17
11

Otherwise Unclassified Properties

Base Metal Price, % relative 22
1.9
Density, g/cm3 7.8
7.5
Embodied Carbon, kg CO2/kg material 4.8
1.5
Embodied Energy, MJ/kg 68
21
Embodied Water, L/kg 180
44

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
13 to 37
Resilience: Unit (Modulus of Resilience), kJ/m3 260
27 to 240
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 24
5.8 to 17
Strength to Weight: Bending, points 22
8.7 to 17
Thermal Shock Resistance, points 14
6.0 to 17

Alloy Composition

Carbon (C), % 0 to 0.060
3.1 to 3.4
Chromium (Cr), % 20.5 to 23.5
0
Iron (Fe), % 51.9 to 62.1
92.1 to 93.9
Manganese (Mn), % 4.0 to 6.0
0.5 to 0.7
Molybdenum (Mo), % 1.5 to 3.0
0
Nickel (Ni), % 11.5 to 13.5
0
Niobium (Nb), % 0.1 to 0.3
0
Nitrogen (N), % 0.2 to 0.4
0
Phosphorus (P), % 0 to 0.040
0 to 0.9
Silicon (Si), % 0 to 1.0
2.5 to 2.8
Sulfur (S), % 0 to 0.030
0 to 0.15
Vanadium (V), % 0.1 to 0.3
0