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SAE-AISI D4 Steel vs. ACI-ASTM CB7Cu-2 Steel

Both SAE-AISI D4 steel and ACI-ASTM CB7Cu-2 steel are iron alloys. They have 89% of their average alloy composition in common. There are 28 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 SAE-AISI D4 steel and the bottom bar is ACI-ASTM CB7Cu-2 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 8.4 to 15
5.7 to 11
Fatigue Strength, MPa 310 to 920
420 to 590
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 74
75
Tensile Strength: Ultimate (UTS), MPa 760 to 2060
960 to 1350
Tensile Strength: Yield (Proof), MPa 470 to 1540
760 to 1180

Thermal Properties

Latent Heat of Fusion, J/g 270
280
Melting Completion (Liquidus), °C 1430
1430
Melting Onset (Solidus), °C 1380
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 31
17
Thermal Expansion, µm/m-K 12
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 4.2
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 5.0
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 8.0
13
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 3.3
2.6
Embodied Energy, MJ/kg 49
38
Embodied Water, L/kg 100
130

Common Calculations

PREN (Pitting Resistance) 15
15
Resilience: Ultimate (Unit Rupture Work), MJ/m3 100 to 160
71 to 120
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 27 to 75
34 to 48
Strength to Weight: Bending, points 24 to 47
28 to 35
Thermal Diffusivity, mm2/s 8.3
4.6
Thermal Shock Resistance, points 23 to 63
32 to 45

Alloy Composition

Carbon (C), % 2.1 to 2.4
0 to 0.070
Chromium (Cr), % 11 to 13
14 to 15.5
Copper (Cu), % 0 to 0.25
2.5 to 3.2
Iron (Fe), % 80.6 to 86.3
73.6 to 79
Manganese (Mn), % 0 to 0.6
0 to 0.7
Molybdenum (Mo), % 0.7 to 1.2
0
Nickel (Ni), % 0 to 0.3
4.5 to 5.5
Niobium (Nb), % 0
0 to 0.35
Nitrogen (N), % 0
0 to 0.050
Phosphorus (P), % 0 to 0.030
0 to 0.035
Silicon (Si), % 0 to 0.6
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Vanadium (V), % 0 to 1.0
0