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ACI-ASTM CD3MCuN Steel vs. Grade 4 Titanium

ACI-ASTM CD3MCuN steel belongs to the iron alloys classification, while grade 4 titanium belongs to the titanium alloys. There are 29 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CD3MCuN steel and the bottom bar is grade 4 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 29
17
Fatigue Strength, MPa 370
340
Poisson's Ratio 0.27
0.32
Shear Modulus, GPa 80
41
Tensile Strength: Ultimate (UTS), MPa 790
640
Tensile Strength: Yield (Proof), MPa 500
530

Thermal Properties

Latent Heat of Fusion, J/g 300
420
Maximum Temperature: Mechanical, °C 1100
320
Melting Completion (Liquidus), °C 1440
1660
Melting Onset (Solidus), °C 1390
1610
Specific Heat Capacity, J/kg-K 480
540
Thermal Conductivity, W/m-K 15
19
Thermal Expansion, µm/m-K 13
9.4

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
3.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
6.3

Otherwise Unclassified Properties

Base Metal Price, % relative 20
37
Density, g/cm3 7.8
4.5
Embodied Carbon, kg CO2/kg material 3.9
31
Embodied Energy, MJ/kg 54
500
Embodied Water, L/kg 180
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
100
Resilience: Unit (Modulus of Resilience), kJ/m3 620
1330
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 28
40
Strength to Weight: Bending, points 24
37
Thermal Diffusivity, mm2/s 4.1
7.6
Thermal Shock Resistance, points 22
46

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.080
Chromium (Cr), % 24 to 26.7
0
Copper (Cu), % 1.4 to 1.9
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 58.2 to 65.9
0 to 0.5
Manganese (Mn), % 0 to 1.2
0
Molybdenum (Mo), % 2.9 to 3.8
0
Nickel (Ni), % 5.6 to 6.7
0
Nitrogen (N), % 0.22 to 0.33
0 to 0.050
Oxygen (O), % 0
0 to 0.4
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 1.1
0
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
98.6 to 100
Residuals, % 0
0 to 0.4