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Grade 2 Titanium vs. SAE-AISI 9254 Steel

Grade 2 titanium belongs to the titanium alloys classification, while SAE-AISI 9254 steel belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is grade 2 titanium and the bottom bar is SAE-AISI 9254 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
200
Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 23
20
Fatigue Strength, MPa 250
280
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 38
72
Shear Strength, MPa 270
410
Tensile Strength: Ultimate (UTS), MPa 420
660
Tensile Strength: Yield (Proof), MPa 360
410

Thermal Properties

Latent Heat of Fusion, J/g 420
270
Maximum Temperature: Mechanical, °C 320
410
Melting Completion (Liquidus), °C 1660
1440
Melting Onset (Solidus), °C 1610
1400
Specific Heat Capacity, J/kg-K 540
480
Thermal Conductivity, W/m-K 22
46
Thermal Expansion, µm/m-K 9.0
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 7.2
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 37
2.2
Density, g/cm3 4.5
7.7
Embodied Carbon, kg CO2/kg material 31
1.5
Embodied Energy, MJ/kg 510
20
Embodied Water, L/kg 110
49

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 92
110
Resilience: Unit (Modulus of Resilience), kJ/m3 600
450
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 26
24
Strength to Weight: Bending, points 28
22
Thermal Diffusivity, mm2/s 8.9
12
Thermal Shock Resistance, points 32
20

Alloy Composition

Carbon (C), % 0 to 0.080
0.51 to 0.59
Chromium (Cr), % 0
0.6 to 0.8
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.3
96.1 to 97.1
Manganese (Mn), % 0
0.6 to 0.8
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.25
0
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0
1.2 to 1.6
Sulfur (S), % 0
0 to 0.040
Titanium (Ti), % 98.9 to 100
0
Residuals, % 0 to 0.4
0