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EN 1.6579 Steel vs. ACI-ASTM CD4MCuN Steel

Both EN 1.6579 steel and ACI-ASTM CD4MCuN steel are iron alloys. They have 67% 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 EN 1.6579 steel and the bottom bar is ACI-ASTM CD4MCuN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 11 to 14
18
Fatigue Strength, MPa 380 to 570
340
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 73
79
Tensile Strength: Ultimate (UTS), MPa 850 to 980
770
Tensile Strength: Yield (Proof), MPa 600 to 910
550

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Maximum Temperature: Mechanical, °C 440
1100
Melting Completion (Liquidus), °C 1460
1420
Melting Onset (Solidus), °C 1410
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 39
17
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.7
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 3.7
18
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.7
3.5
Embodied Energy, MJ/kg 22
49
Embodied Water, L/kg 56
180

Common Calculations

PREN (Pitting Resistance) 2.4
35
Resilience: Ultimate (Unit Rupture Work), MJ/m3 100 to 120
130
Resilience: Unit (Modulus of Resilience), kJ/m3 950 to 2210
760
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 30 to 35
28
Strength to Weight: Bending, points 25 to 28
24
Thermal Diffusivity, mm2/s 11
4.5
Thermal Shock Resistance, points 25 to 29
21

Alloy Composition

Carbon (C), % 0.32 to 0.38
0 to 0.040
Chromium (Cr), % 1.4 to 1.7
24.5 to 26.5
Copper (Cu), % 0
2.7 to 3.3
Iron (Fe), % 94.2 to 96.1
59.5 to 66.3
Manganese (Mn), % 0.6 to 1.0
0 to 1.0
Molybdenum (Mo), % 0.15 to 0.35
1.7 to 2.3
Nickel (Ni), % 1.4 to 1.7
4.7 to 6.0
Nitrogen (N), % 0
0.1 to 0.25
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 0.6
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.040