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EN 1.7703 Steel vs. ACI-ASTM CD4MCu Steel

Both EN 1.7703 steel and ACI-ASTM CD4MCu 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 (4, in this case) are not shown.

For each property being compared, the top bar is EN 1.7703 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, % 20
18
Fatigue Strength, MPa 320 to 340
340
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 74
79
Tensile Strength: Ultimate (UTS), MPa 670 to 690
770
Tensile Strength: Yield (Proof), MPa 460 to 500
550

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Maximum Temperature: Mechanical, °C 460
1100
Melting Completion (Liquidus), °C 1470
1430
Melting Onset (Solidus), °C 1430
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 7.6
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 4.2
18
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 2.5
3.5
Embodied Energy, MJ/kg 35
49
Embodied Water, L/kg 61
180

Common Calculations

PREN (Pitting Resistance) 5.6
32
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 130
130
Resilience: Unit (Modulus of Resilience), kJ/m3 570 to 650
760
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 24
28
Strength to Weight: Bending, points 22
24
Thermal Diffusivity, mm2/s 11
4.5
Thermal Shock Resistance, points 19 to 20
21

Alloy Composition

Carbon (C), % 0.11 to 0.15
0 to 0.040
Chromium (Cr), % 2.0 to 2.5
24.5 to 26.5
Copper (Cu), % 0 to 0.2
2.8 to 3.3
Iron (Fe), % 94.6 to 96.4
59.9 to 66.3
Manganese (Mn), % 0.3 to 0.6
0 to 1.0
Molybdenum (Mo), % 0.9 to 1.1
1.8 to 2.3
Nickel (Ni), % 0 to 0.25
4.8 to 6.0
Niobium (Nb), % 0 to 0.070
0
Nitrogen (N), % 0 to 0.012
0
Phosphorus (P), % 0 to 0.015
0 to 0.040
Silicon (Si), % 0 to 0.1
0 to 1.0
Sulfur (S), % 0 to 0.0050
0 to 0.040
Titanium (Ti), % 0 to 0.030
0
Vanadium (V), % 0.25 to 0.35
0