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EN 1.7779 Steel vs. ACI-ASTM CE8MN Steel

Both EN 1.7779 steel and ACI-ASTM CE8MN steel are iron alloys. They have 66% of their average alloy composition in common. There are 30 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 EN 1.7779 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, % 16
29
Fatigue Strength, MPa 430
370
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 73
80
Tensile Strength: Ultimate (UTS), MPa 810
750
Tensile Strength: Yield (Proof), MPa 660
500

Thermal Properties

Latent Heat of Fusion, J/g 260
300
Maximum Temperature: Mechanical, °C 470
1100
Melting Completion (Liquidus), °C 1460
1440
Melting Onset (Solidus), °C 1420
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 39
16
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.7
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.9
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 4.0
21
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.8
4.2
Embodied Energy, MJ/kg 41
58
Embodied Water, L/kg 64
180

Common Calculations

PREN (Pitting Resistance) 5.0
40
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
190
Resilience: Unit (Modulus of Resilience), kJ/m3 1150
620
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 29
27
Strength to Weight: Bending, points 25
23
Thermal Diffusivity, mm2/s 11
4.2
Thermal Shock Resistance, points 23
21

Alloy Composition

Aluminum (Al), % 0 to 0.040
0
Carbon (C), % 0.17 to 0.23
0 to 0.080
Chromium (Cr), % 3.0 to 3.3
22.5 to 25.5
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 93.8 to 95.4
56 to 66.4
Manganese (Mn), % 0.3 to 0.5
0 to 1.0
Molybdenum (Mo), % 0.5 to 0.6
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 0.025
0 to 0.040
Silicon (Si), % 0.15 to 0.35
0 to 1.5
Sulfur (S), % 0 to 0.010
0 to 0.040
Vanadium (V), % 0.45 to 0.55
0