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ACI-ASTM CE8MN Steel vs. ACI-ASTM CF8M Steel

Both ACI-ASTM CE8MN steel and ACI-ASTM CF8M steel are iron alloys. They have a moderately high 94% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CE8MN steel and the bottom bar is ACI-ASTM CF8M steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 29
50
Fatigue Strength, MPa 370
280
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 80
78
Tensile Strength: Ultimate (UTS), MPa 750
540
Tensile Strength: Yield (Proof), MPa 500
290

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 440
420
Maximum Temperature: Mechanical, °C 1100
1000
Melting Completion (Liquidus), °C 1440
1440
Melting Onset (Solidus), °C 1400
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 16
16
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 21
19
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 4.2
3.8
Embodied Energy, MJ/kg 58
53
Embodied Water, L/kg 180
160

Common Calculations

PREN (Pitting Resistance) 40
28
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
230
Resilience: Unit (Modulus of Resilience), kJ/m3 620
210
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 27
19
Strength to Weight: Bending, points 23
19
Thermal Diffusivity, mm2/s 4.2
4.3
Thermal Shock Resistance, points 21
12

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.080
Chromium (Cr), % 22.5 to 25.5
18 to 21
Iron (Fe), % 56 to 66.4
60.3 to 71
Manganese (Mn), % 0 to 1.0
0 to 1.5
Molybdenum (Mo), % 3.0 to 4.5
2.0 to 3.0
Nickel (Ni), % 8.0 to 11
9.0 to 12
Nitrogen (N), % 0.1 to 0.3
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.5
0 to 2.0
Sulfur (S), % 0 to 0.040
0 to 0.040