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ACI-ASTM CB7Cu-1 Steel vs. ACI-ASTM CD4MCuN Steel

Both ACI-ASTM CB7Cu-1 steel and ACI-ASTM CD4MCuN steel are iron alloys. They have 87% 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 CB7Cu-1 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, % 5.7 to 11
18
Fatigue Strength, MPa 420 to 590
340
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 76
79
Tensile Strength: Ultimate (UTS), MPa 960 to 1350
770
Tensile Strength: Yield (Proof), MPa 760 to 1180
550

Thermal Properties

Latent Heat of Fusion, J/g 280
300
Melting Completion (Liquidus), °C 1430
1420
Melting Onset (Solidus), °C 1500
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 17
17
Thermal Expansion, µm/m-K 11
13

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 13
18
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.6
3.5
Embodied Energy, MJ/kg 38
49
Embodied Water, L/kg 130
180

Common Calculations

PREN (Pitting Resistance) 17
35
Resilience: Ultimate (Unit Rupture Work), MJ/m3 71 to 120
130
Resilience: Unit (Modulus of Resilience), kJ/m3 1500 to 3590
760
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 34 to 48
28
Strength to Weight: Bending, points 28 to 35
24
Thermal Diffusivity, mm2/s 4.6
4.5
Thermal Shock Resistance, points 32 to 45
21

Alloy Composition

Carbon (C), % 0 to 0.070
0 to 0.040
Chromium (Cr), % 15.5 to 17.7
24.5 to 26.5
Copper (Cu), % 2.5 to 3.2
2.7 to 3.3
Iron (Fe), % 72.3 to 78.4
59.5 to 66.3
Manganese (Mn), % 0 to 0.7
0 to 1.0
Molybdenum (Mo), % 0
1.7 to 2.3
Nickel (Ni), % 3.6 to 4.6
4.7 to 6.0
Niobium (Nb), % 0 to 0.35
0
Nitrogen (N), % 0 to 0.050
0.1 to 0.25
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.040