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ACI-ASTM CB7Cu-2 Steel vs. Titanium 4-4-2

ACI-ASTM CB7Cu-2 steel belongs to the iron alloys classification, while titanium 4-4-2 belongs to the titanium alloys. There are 26 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CB7Cu-2 steel and the bottom bar is titanium 4-4-2.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 5.7 to 11
10
Fatigue Strength, MPa 420 to 590
590 to 620
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 75
42
Tensile Strength: Ultimate (UTS), MPa 960 to 1350
1150 to 1250
Tensile Strength: Yield (Proof), MPa 760 to 1180
1030 to 1080

Thermal Properties

Latent Heat of Fusion, J/g 280
410
Melting Completion (Liquidus), °C 1430
1610
Melting Onset (Solidus), °C 1380
1560
Specific Heat Capacity, J/kg-K 480
540
Thermal Conductivity, W/m-K 17
6.7
Thermal Expansion, µm/m-K 11
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 13
39
Density, g/cm3 7.8
4.7
Embodied Carbon, kg CO2/kg material 2.6
30
Embodied Energy, MJ/kg 38
480
Embodied Water, L/kg 130
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 71 to 120
110 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 1510 to 3600
4700 to 5160
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
34
Strength to Weight: Axial, points 34 to 48
68 to 74
Strength to Weight: Bending, points 28 to 35
52 to 55
Thermal Diffusivity, mm2/s 4.6
2.6
Thermal Shock Resistance, points 32 to 45
86 to 93

Alloy Composition

Aluminum (Al), % 0
3.0 to 5.0
Carbon (C), % 0 to 0.070
0 to 0.080
Chromium (Cr), % 14 to 15.5
0
Copper (Cu), % 2.5 to 3.2
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 73.6 to 79
0 to 0.2
Manganese (Mn), % 0 to 0.7
0
Molybdenum (Mo), % 0
3.0 to 5.0
Nickel (Ni), % 4.5 to 5.5
0
Niobium (Nb), % 0 to 0.35
0
Nitrogen (N), % 0 to 0.050
0 to 0.050
Oxygen (O), % 0
0 to 0.25
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0 to 1.0
0.3 to 0.7
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
1.5 to 2.5
Titanium (Ti), % 0
85.8 to 92.2
Residuals, % 0
0 to 0.4