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Grade 4 Titanium vs. Grade FDSiCrV Steel

Grade 4 titanium belongs to the titanium alloys classification, while grade FDSiCrV steel belongs to the iron alloys. There are 26 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is grade 4 titanium and the bottom bar is grade FDSiCrV steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
630
Elastic (Young's, Tensile) Modulus, GPa 110
190
Poisson's Ratio 0.32
0.29
Reduction in Area, % 28
42
Shear Modulus, GPa 41
80
Tensile Strength: Ultimate (UTS), MPa 640
2100

Thermal Properties

Latent Heat of Fusion, J/g 420
270
Maximum Temperature: Mechanical, °C 320
420
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 19
47
Thermal Expansion, µm/m-K 9.4
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.1
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 6.3
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 37
2.3
Density, g/cm3 4.5
7.7
Embodied Carbon, kg CO2/kg material 31
1.9
Embodied Energy, MJ/kg 500
26
Embodied Water, L/kg 110
50

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 40
75
Strength to Weight: Bending, points 37
47
Thermal Diffusivity, mm2/s 7.6
13
Thermal Shock Resistance, points 46
63

Alloy Composition

Carbon (C), % 0 to 0.080
0.5 to 0.7
Chromium (Cr), % 0
0.5 to 1.0
Copper (Cu), % 0
0 to 0.12
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.5
96 to 97.8
Manganese (Mn), % 0
0.4 to 0.9
Nitrogen (N), % 0 to 0.050
0
Oxygen (O), % 0 to 0.4
0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
1.2 to 1.7
Sulfur (S), % 0
0 to 0.025
Titanium (Ti), % 98.6 to 100
0
Vanadium (V), % 0
0.1 to 0.25
Residuals, % 0 to 0.4
0