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ACI-ASTM CT15C Steel vs. Grade 35 Titanium

ACI-ASTM CT15C steel belongs to the iron alloys classification, while grade 35 titanium belongs to the titanium alloys. There are 29 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 CT15C steel and the bottom bar is grade 35 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 23
5.6
Fatigue Strength, MPa 130
330
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 76
41
Tensile Strength: Ultimate (UTS), MPa 500
1000
Tensile Strength: Yield (Proof), MPa 190
630

Thermal Properties

Latent Heat of Fusion, J/g 310
420
Maximum Temperature: Mechanical, °C 1080
320
Melting Completion (Liquidus), °C 1410
1630
Melting Onset (Solidus), °C 1360
1580
Specific Heat Capacity, J/kg-K 470
550
Thermal Conductivity, W/m-K 12
7.4
Thermal Expansion, µm/m-K 16
9.3

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
1.1
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
2.2

Otherwise Unclassified Properties

Base Metal Price, % relative 36
37
Density, g/cm3 8.0
4.6
Embodied Carbon, kg CO2/kg material 6.1
33
Embodied Energy, MJ/kg 88
530
Embodied Water, L/kg 190
170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 90
49
Resilience: Unit (Modulus of Resilience), kJ/m3 93
1830
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
35
Strength to Weight: Axial, points 17
61
Strength to Weight: Bending, points 17
49
Thermal Diffusivity, mm2/s 3.2
3.0
Thermal Shock Resistance, points 12
70

Alloy Composition

Aluminum (Al), % 0
4.0 to 5.0
Carbon (C), % 0.050 to 0.15
0 to 0.080
Chromium (Cr), % 19 to 21
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 40.3 to 49.2
0.2 to 0.8
Manganese (Mn), % 0.15 to 1.5
0
Molybdenum (Mo), % 0
1.5 to 2.5
Nickel (Ni), % 31 to 34
0
Niobium (Nb), % 0.5 to 1.5
0
Nitrogen (N), % 0
0 to 0.050
Oxygen (O), % 0
0 to 0.25
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0.15 to 1.5
0.2 to 0.4
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
88.4 to 93
Vanadium (V), % 0
1.1 to 2.1
Residuals, % 0
0 to 0.4