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SAE-AISI 1140 Steel vs. ACI-ASTM CB7Cu-2 Steel

Both SAE-AISI 1140 steel and ACI-ASTM CB7Cu-2 steel are iron alloys. They have 77% 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 SAE-AISI 1140 steel and the bottom bar is ACI-ASTM CB7Cu-2 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170 to 180
300 to 420
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 14 to 18
5.7 to 11
Fatigue Strength, MPa 230 to 370
420 to 590
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
75
Tensile Strength: Ultimate (UTS), MPa 600 to 700
960 to 1350
Tensile Strength: Yield (Proof), MPa 340 to 570
760 to 1180

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Melting Completion (Liquidus), °C 1460
1430
Melting Onset (Solidus), °C 1420
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 51
17
Thermal Expansion, µm/m-K 13
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
13
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.4
2.6
Embodied Energy, MJ/kg 18
38
Embodied Water, L/kg 46
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 89 to 93
71 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 310 to 870
1510 to 3600
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 21 to 25
34 to 48
Strength to Weight: Bending, points 20 to 22
28 to 35
Thermal Diffusivity, mm2/s 14
4.6
Thermal Shock Resistance, points 18 to 21
32 to 45

Alloy Composition

Carbon (C), % 0.37 to 0.44
0 to 0.070
Chromium (Cr), % 0
14 to 15.5
Copper (Cu), % 0
2.5 to 3.2
Iron (Fe), % 98.4 to 98.9
73.6 to 79
Manganese (Mn), % 0.7 to 1.0
0 to 0.7
Nickel (Ni), % 0
4.5 to 5.5
Niobium (Nb), % 0
0 to 0.35
Nitrogen (N), % 0
0 to 0.050
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0.080 to 0.13
0 to 0.030