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EN 1.7390 Steel vs. ACI-ASTM CD4MCu Steel

Both EN 1.7390 steel and ACI-ASTM CD4MCu steel are iron alloys. Both are furnished in the normalized and tempered condition. They have 69% of their average alloy composition in common. There are 30 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 EN 1.7390 steel and the bottom bar is ACI-ASTM CD4MCu steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 16
18
Fatigue Strength, MPa 310
340
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 74
79
Tensile Strength: Ultimate (UTS), MPa 710
770
Tensile Strength: Yield (Proof), MPa 480
550

Thermal Properties

Latent Heat of Fusion, J/g 260
300
Maximum Temperature: Mechanical, °C 510
1100
Melting Completion (Liquidus), °C 1460
1430
Melting Onset (Solidus), °C 1420
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 40
17
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.1
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 9.3
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 4.3
18
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.7
3.5
Embodied Energy, MJ/kg 23
49
Embodied Water, L/kg 69
180

Common Calculations

PREN (Pitting Resistance) 6.8
32
Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
130
Resilience: Unit (Modulus of Resilience), kJ/m3 600
760
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 25
28
Strength to Weight: Bending, points 23
24
Thermal Diffusivity, mm2/s 11
4.5
Thermal Shock Resistance, points 20
21

Alloy Composition

Carbon (C), % 0 to 0.18
0 to 0.040
Chromium (Cr), % 4.0 to 6.0
24.5 to 26.5
Copper (Cu), % 0
2.8 to 3.3
Iron (Fe), % 91.9 to 95.3
59.9 to 66.3
Manganese (Mn), % 0.3 to 0.8
0 to 1.0
Molybdenum (Mo), % 0.45 to 0.65
1.8 to 2.3
Nickel (Ni), % 0
4.8 to 6.0
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 0.4
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.040