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SAE-AISI D4 Steel vs. ACI-ASTM CE8MN Steel

Both SAE-AISI D4 steel and ACI-ASTM CE8MN steel are iron alloys. They have 75% of their average alloy composition in common. There are 28 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 SAE-AISI D4 steel and the bottom bar is ACI-ASTM CE8MN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 8.4 to 15
29
Fatigue Strength, MPa 310 to 920
370
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 74
80
Tensile Strength: Ultimate (UTS), MPa 760 to 2060
750
Tensile Strength: Yield (Proof), MPa 470 to 1540
500

Thermal Properties

Latent Heat of Fusion, J/g 270
300
Melting Completion (Liquidus), °C 1430
1440
Melting Onset (Solidus), °C 1380
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 31
16
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 4.2
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 5.0
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 8.0
21
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 3.3
4.2
Embodied Energy, MJ/kg 49
58
Embodied Water, L/kg 100
180

Common Calculations

PREN (Pitting Resistance) 15
40
Resilience: Ultimate (Unit Rupture Work), MJ/m3 100 to 160
190
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 27 to 75
27
Strength to Weight: Bending, points 24 to 47
23
Thermal Diffusivity, mm2/s 8.3
4.2
Thermal Shock Resistance, points 23 to 63
21

Alloy Composition

Carbon (C), % 2.1 to 2.4
0 to 0.080
Chromium (Cr), % 11 to 13
22.5 to 25.5
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 80.6 to 86.3
56 to 66.4
Manganese (Mn), % 0 to 0.6
0 to 1.0
Molybdenum (Mo), % 0.7 to 1.2
3.0 to 4.5
Nickel (Ni), % 0 to 0.3
8.0 to 11
Nitrogen (N), % 0
0.1 to 0.3
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 0.6
0 to 1.5
Sulfur (S), % 0 to 0.030
0 to 0.040
Vanadium (V), % 0 to 1.0
0