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ACI-ASTM CB7Cu-1 Steel vs. Grade Ti-Pd8A Titanium

ACI-ASTM CB7Cu-1 steel belongs to the iron alloys classification, while grade Ti-Pd8A titanium belongs to the titanium alloys. There are 28 material properties with values for both materials. Properties with values for just one material (5, 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 grade Ti-Pd8A titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 300 to 420
200
Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 5.7 to 11
13
Fatigue Strength, MPa 420 to 590
260
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 76
40
Tensile Strength: Ultimate (UTS), MPa 960 to 1350
500
Tensile Strength: Yield (Proof), MPa 760 to 1180
430

Thermal Properties

Latent Heat of Fusion, J/g 280
420
Melting Completion (Liquidus), °C 1430
1660
Melting Onset (Solidus), °C 1500
1610
Specific Heat Capacity, J/kg-K 480
540
Thermal Conductivity, W/m-K 17
21
Thermal Expansion, µm/m-K 11
8.7

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
3.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
6.9

Otherwise Unclassified Properties

Density, g/cm3 7.8
4.5
Embodied Carbon, kg CO2/kg material 2.6
49
Embodied Energy, MJ/kg 38
840
Embodied Water, L/kg 130
520

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 71 to 120
65
Resilience: Unit (Modulus of Resilience), kJ/m3 1500 to 3590
880
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 34 to 48
31
Strength to Weight: Bending, points 28 to 35
31
Thermal Diffusivity, mm2/s 4.6
8.6
Thermal Shock Resistance, points 32 to 45
39

Alloy Composition

Carbon (C), % 0 to 0.070
0 to 0.1
Chromium (Cr), % 15.5 to 17.7
0
Copper (Cu), % 2.5 to 3.2
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 72.3 to 78.4
0 to 0.25
Manganese (Mn), % 0 to 0.7
0
Nickel (Ni), % 3.6 to 4.6
0 to 0.050
Niobium (Nb), % 0 to 0.35
0
Nitrogen (N), % 0 to 0.050
0
Oxygen (O), % 0
0 to 0.4
Palladium (Pd), % 0
0.12 to 0.3
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
98.8 to 99.9
Residuals, % 0
0 to 0.4