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Grade 15 Titanium vs. ACI-ASTM CK35MN Steel

Grade 15 titanium belongs to the titanium alloys classification, while ACI-ASTM CK35MN steel belongs to the iron 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 grade 15 titanium and the bottom bar is ACI-ASTM CK35MN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
210
Elongation at Break, % 20
40
Fatigue Strength, MPa 290
270
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 41
81
Tensile Strength: Ultimate (UTS), MPa 540
650
Tensile Strength: Yield (Proof), MPa 430
310

Thermal Properties

Latent Heat of Fusion, J/g 420
310
Maximum Temperature: Mechanical, °C 320
1100
Melting Completion (Liquidus), °C 1660
1460
Melting Onset (Solidus), °C 1610
1410
Specific Heat Capacity, J/kg-K 540
470
Thermal Conductivity, W/m-K 21
12
Thermal Expansion, µm/m-K 8.7
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.4
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 6.7
2.1

Otherwise Unclassified Properties

Base Metal Price, % relative 37
31
Density, g/cm3 4.5
8.0
Embodied Carbon, kg CO2/kg material 32
5.9
Embodied Energy, MJ/kg 520
81
Embodied Water, L/kg 210
210

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
210
Resilience: Unit (Modulus of Resilience), kJ/m3 870
240
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 33
22
Strength to Weight: Bending, points 33
21
Thermal Diffusivity, mm2/s 8.4
3.3
Thermal Shock Resistance, points 41
14

Alloy Composition


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Carbon (C), % 0 to 0.080
0 to 0.035
Chromium (Cr), % 0
22 to 24
Copper (Cu), % 0
0 to 0.4
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.3
43.4 to 51.8
Manganese (Mn), % 0
0 to 2.0
Molybdenum (Mo), % 0
6.0 to 6.8
Nickel (Ni), % 0.4 to 0.6
20 to 22
Nitrogen (N), % 0 to 0.050
0.21 to 0.32
Oxygen (O), % 0 to 0.25
0
Phosphorus (P), % 0
0 to 0.035
Ruthenium (Ru), % 0.040 to 0.060
0
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.020
Titanium (Ti), % 98.2 to 99.56
0
Residuals, % 0 to 0.4
0