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ACI-ASTM CD3MCuN Steel vs. ACI-ASTM CB7Cu-1 Steel

Both ACI-ASTM CD3MCuN steel and ACI-ASTM CB7Cu-1 steel are iron alloys. They have 85% of their average alloy composition in common. There are 29 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 ACI-ASTM CD3MCuN steel and the bottom bar is ACI-ASTM CB7Cu-1 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 29
5.7 to 11
Fatigue Strength, MPa 370
420 to 590
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 80
76
Tensile Strength: Ultimate (UTS), MPa 790
960 to 1350
Tensile Strength: Yield (Proof), MPa 500
760 to 1180

Thermal Properties

Latent Heat of Fusion, J/g 300
280
Melting Completion (Liquidus), °C 1440
1430
Melting Onset (Solidus), °C 1390
1500
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
17
Thermal Expansion, µm/m-K 13
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 20
13
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.9
2.6
Embodied Energy, MJ/kg 54
38
Embodied Water, L/kg 180
130

Common Calculations

PREN (Pitting Resistance) 41
17
Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
71 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 620
1500 to 3590
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 28
34 to 48
Strength to Weight: Bending, points 24
28 to 35
Thermal Diffusivity, mm2/s 4.1
4.6
Thermal Shock Resistance, points 22
32 to 45

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.070
Chromium (Cr), % 24 to 26.7
15.5 to 17.7
Copper (Cu), % 1.4 to 1.9
2.5 to 3.2
Iron (Fe), % 58.2 to 65.9
72.3 to 78.4
Manganese (Mn), % 0 to 1.2
0 to 0.7
Molybdenum (Mo), % 2.9 to 3.8
0
Nickel (Ni), % 5.6 to 6.7
3.6 to 4.6
Niobium (Nb), % 0
0 to 0.35
Nitrogen (N), % 0.22 to 0.33
0 to 0.050
Phosphorus (P), % 0 to 0.030
0 to 0.035
Silicon (Si), % 0 to 1.1
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030