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Grade 1 Titanium vs. ACI-ASTM CK3MCuN Steel

Grade 1 titanium belongs to the titanium alloys classification, while ACI-ASTM CK3MCuN steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is grade 1 titanium and the bottom bar is ACI-ASTM CK3MCuN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 120
180
Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 28
39
Fatigue Strength, MPa 170
250
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 39
80
Tensile Strength: Ultimate (UTS), MPa 310
620
Tensile Strength: Yield (Proof), MPa 220
290

Thermal Properties

Latent Heat of Fusion, J/g 420
300
Maximum Temperature: Mechanical, °C 320
1090
Melting Completion (Liquidus), °C 1660
1460
Melting Onset (Solidus), °C 1610
1350
Specific Heat Capacity, J/kg-K 540
460
Thermal Conductivity, W/m-K 20
12
Thermal Expansion, µm/m-K 8.8
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.7
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 7.3
2.1

Otherwise Unclassified Properties

Base Metal Price, % relative 37
29
Density, g/cm3 4.5
8.0
Embodied Carbon, kg CO2/kg material 31
5.6
Embodied Energy, MJ/kg 510
76
Embodied Water, L/kg 110
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 79
200
Resilience: Unit (Modulus of Resilience), kJ/m3 230
210
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
24
Strength to Weight: Axial, points 19
21
Strength to Weight: Bending, points 23
20
Thermal Diffusivity, mm2/s 8.2
3.2
Thermal Shock Resistance, points 24
14

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.025
Chromium (Cr), % 0
19.5 to 20.5
Copper (Cu), % 0
0.5 to 1.0
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.2
49.5 to 56.3
Manganese (Mn), % 0
0 to 1.2
Molybdenum (Mo), % 0
6.0 to 7.0
Nickel (Ni), % 0
17.5 to 19.5
Nitrogen (N), % 0 to 0.030
0.18 to 0.24
Oxygen (O), % 0 to 0.18
0
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 99.095 to 100
0
Residuals, % 0 to 0.4
0