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ACI-ASTM CD4MCu Steel vs. EN 1.8918 Steel

Both ACI-ASTM CD4MCu steel and EN 1.8918 steel are iron alloys. They have 65% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CD4MCu steel and the bottom bar is EN 1.8918 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 18
19
Fatigue Strength, MPa 340
330
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 79
73
Tensile Strength: Ultimate (UTS), MPa 770
640
Tensile Strength: Yield (Proof), MPa 550
490

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 1100
400
Melting Completion (Liquidus), °C 1430
1460
Melting Onset (Solidus), °C 1380
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 17
46
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 18
2.5
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.5
1.7
Embodied Energy, MJ/kg 49
24
Embodied Water, L/kg 180
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
110
Resilience: Unit (Modulus of Resilience), kJ/m3 760
640
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 28
23
Strength to Weight: Bending, points 24
21
Thermal Diffusivity, mm2/s 4.5
12
Thermal Shock Resistance, points 21
19

Alloy Composition

Aluminum (Al), % 0
0.020 to 0.050
Carbon (C), % 0 to 0.040
0 to 0.2
Chromium (Cr), % 24.5 to 26.5
0 to 0.3
Copper (Cu), % 2.8 to 3.3
0 to 0.7
Iron (Fe), % 59.9 to 66.3
95.2 to 98.9
Manganese (Mn), % 0 to 1.0
1.1 to 1.7
Molybdenum (Mo), % 1.8 to 2.3
0 to 0.1
Nickel (Ni), % 4.8 to 6.0
0 to 0.8
Niobium (Nb), % 0
0 to 0.050
Nitrogen (N), % 0
0 to 0.025
Phosphorus (P), % 0 to 0.040
0 to 0.020
Silicon (Si), % 0 to 1.0
0 to 0.6
Sulfur (S), % 0 to 0.040
0 to 0.0050
Titanium (Ti), % 0
0 to 0.030
Vanadium (V), % 0
0 to 0.2