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EN 1.7725 Steel vs. ACI-ASTM CD3MCuN Steel

Both EN 1.7725 steel and ACI-ASTM CD3MCuN steel are iron alloys. They have 65% 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 1.7725 steel and the bottom bar is ACI-ASTM CD3MCuN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 14
29
Fatigue Strength, MPa 390 to 550
370
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 73
80
Tensile Strength: Ultimate (UTS), MPa 830 to 1000
790
Tensile Strength: Yield (Proof), MPa 610 to 860
500

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Maximum Temperature: Mechanical, °C 440
1100
Melting Completion (Liquidus), °C 1460
1440
Melting Onset (Solidus), °C 1420
1390
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 39
15
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 2.9
20
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.8
3.9
Embodied Energy, MJ/kg 24
54
Embodied Water, L/kg 54
180

Common Calculations

PREN (Pitting Resistance) 2.8
41
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 130
200
Resilience: Unit (Modulus of Resilience), kJ/m3 980 to 1940
620
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 29 to 35
28
Strength to Weight: Bending, points 25 to 28
24
Thermal Diffusivity, mm2/s 11
4.1
Thermal Shock Resistance, points 24 to 29
22

Alloy Composition

Carbon (C), % 0.27 to 0.34
0 to 0.030
Chromium (Cr), % 1.3 to 1.7
24 to 26.7
Copper (Cu), % 0
1.4 to 1.9
Iron (Fe), % 95.7 to 97.5
58.2 to 65.9
Manganese (Mn), % 0.6 to 1.0
0 to 1.2
Molybdenum (Mo), % 0.3 to 0.5
2.9 to 3.8
Nickel (Ni), % 0
5.6 to 6.7
Nitrogen (N), % 0
0.22 to 0.33
Phosphorus (P), % 0 to 0.025
0 to 0.030
Silicon (Si), % 0 to 0.6
0 to 1.1
Sulfur (S), % 0 to 0.030
0 to 0.030
Vanadium (V), % 0.050 to 0.15
0