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Grade 37 Titanium vs. Grade FDSiCr Steel

Grade 37 titanium belongs to the titanium alloys classification, while grade FDSiCr steel belongs to the iron alloys. There are 25 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 37 titanium and the bottom bar is grade FDSiCr steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Poisson's Ratio 0.32
0.29
Reduction in Area, % 34
42
Shear Modulus, GPa 40
80
Tensile Strength: Ultimate (UTS), MPa 390
1930

Thermal Properties

Latent Heat of Fusion, J/g 420
270
Maximum Temperature: Mechanical, °C 310
410
Melting Completion (Liquidus), °C 1650
1440
Melting Onset (Solidus), °C 1600
1400
Specific Heat Capacity, J/kg-K 550
480
Thermal Conductivity, W/m-K 21
48
Thermal Expansion, µm/m-K 8.9
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.4
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 6.8
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 36
2.2
Density, g/cm3 4.5
7.7
Embodied Carbon, kg CO2/kg material 31
1.5
Embodied Energy, MJ/kg 500
20
Embodied Water, L/kg 120
48

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 24
69
Strength to Weight: Bending, points 26
44
Thermal Diffusivity, mm2/s 8.4
13
Thermal Shock Resistance, points 29
58

Alloy Composition

Aluminum (Al), % 1.0 to 2.0
0
Carbon (C), % 0 to 0.080
0.5 to 0.6
Chromium (Cr), % 0
0.5 to 0.8
Copper (Cu), % 0
0 to 0.12
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.3
96.5 to 97.8
Manganese (Mn), % 0
0.5 to 0.9
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.25
0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
1.2 to 1.6
Sulfur (S), % 0
0 to 0.025
Titanium (Ti), % 96.9 to 99
0
Residuals, % 0 to 0.4
0