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ACI-ASTM CE8MN Steel vs. SAE-AISI 1340 Steel

Both ACI-ASTM CE8MN steel and SAE-AISI 1340 steel are iron alloys. They have 62% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CE8MN steel and the bottom bar is SAE-AISI 1340 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 29
11 to 23
Fatigue Strength, MPa 370
220 to 390
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 80
72
Tensile Strength: Ultimate (UTS), MPa 750
540 to 730
Tensile Strength: Yield (Proof), MPa 500
300 to 620

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 1100
400
Melting Completion (Liquidus), °C 1440
1450
Melting Onset (Solidus), °C 1400
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 16
51
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 21
1.9
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 4.2
1.4
Embodied Energy, MJ/kg 58
19
Embodied Water, L/kg 180
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
78 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 620
240 to 1040
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 27
19 to 26
Strength to Weight: Bending, points 23
19 to 23
Thermal Diffusivity, mm2/s 4.2
14
Thermal Shock Resistance, points 21
17 to 23

Alloy Composition

Carbon (C), % 0 to 0.080
0.38 to 0.43
Chromium (Cr), % 22.5 to 25.5
0
Iron (Fe), % 56 to 66.4
97.2 to 97.9
Manganese (Mn), % 0 to 1.0
1.6 to 1.9
Molybdenum (Mo), % 3.0 to 4.5
0
Nickel (Ni), % 8.0 to 11
0
Nitrogen (N), % 0.1 to 0.3
0
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 1.5
0.15 to 0.35
Sulfur (S), % 0 to 0.040
0 to 0.040