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ACI-ASTM CG6MMN Steel vs. SAE-AISI 1140 Steel

Both ACI-ASTM CG6MMN steel and SAE-AISI 1140 steel are iron alloys. They have 58% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CG6MMN steel and the bottom bar is SAE-AISI 1140 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
170 to 180
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 34
14 to 18
Fatigue Strength, MPa 260
230 to 370
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 79
72
Tensile Strength: Ultimate (UTS), MPa 670
600 to 700
Tensile Strength: Yield (Proof), MPa 320
340 to 570

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 1080
400
Melting Completion (Liquidus), °C 1420
1460
Melting Onset (Solidus), °C 1380
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 17
13

Otherwise Unclassified Properties

Base Metal Price, % relative 22
1.8
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 4.8
1.4
Embodied Energy, MJ/kg 68
18
Embodied Water, L/kg 180
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
89 to 93
Resilience: Unit (Modulus of Resilience), kJ/m3 260
310 to 870
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 24
21 to 25
Strength to Weight: Bending, points 22
20 to 22
Thermal Shock Resistance, points 14
18 to 21

Alloy Composition

Carbon (C), % 0 to 0.060
0.37 to 0.44
Chromium (Cr), % 20.5 to 23.5
0
Iron (Fe), % 51.9 to 62.1
98.4 to 98.9
Manganese (Mn), % 4.0 to 6.0
0.7 to 1.0
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 0.040
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.030
0.080 to 0.13
Vanadium (V), % 0.1 to 0.3
0