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ACI-ASTM CE8MN Steel vs. ASTM A387 Grade 12 Steel

Both ACI-ASTM CE8MN steel and ASTM A387 grade 12 steel are iron alloys. They have 64% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CE8MN steel and the bottom bar is ASTM A387 grade 12 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 29
25
Fatigue Strength, MPa 370
190 to 230
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 80
73
Tensile Strength: Ultimate (UTS), MPa 750
470 to 520
Tensile Strength: Yield (Proof), MPa 500
260 to 310

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 1100
430
Melting Completion (Liquidus), °C 1440
1470
Melting Onset (Solidus), °C 1400
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 16
44
Thermal Expansion, µm/m-K 13
13

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
2.8
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 4.2
1.6
Embodied Energy, MJ/kg 58
21
Embodied Water, L/kg 180
51

Common Calculations

PREN (Pitting Resistance) 40
2.7
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
98 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 620
180 to 250
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 27
16 to 18
Strength to Weight: Bending, points 23
17 to 18
Thermal Diffusivity, mm2/s 4.2
12
Thermal Shock Resistance, points 21
14 to 15

Alloy Composition

Carbon (C), % 0 to 0.080
0.050 to 0.17
Chromium (Cr), % 22.5 to 25.5
0.8 to 1.2
Iron (Fe), % 56 to 66.4
97 to 98.2
Manganese (Mn), % 0 to 1.0
0.4 to 0.65
Molybdenum (Mo), % 3.0 to 4.5
0.45 to 0.6
Nickel (Ni), % 8.0 to 11
0
Nitrogen (N), % 0.1 to 0.3
0
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 1.5
0.15 to 0.4
Sulfur (S), % 0 to 0.040
0 to 0.025