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Grade FDSiCr Steel vs. Grade 9 Titanium

Grade FDSiCr steel belongs to the iron alloys classification, while grade 9 titanium belongs to the titanium 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 FDSiCr steel and the bottom bar is grade 9 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Poisson's Ratio 0.29
0.32
Reduction in Area, % 42
28
Shear Modulus, GPa 80
40
Tensile Strength: Ultimate (UTS), MPa 1930
700 to 960

Thermal Properties

Latent Heat of Fusion, J/g 270
410
Maximum Temperature: Mechanical, °C 410
330
Melting Completion (Liquidus), °C 1440
1640
Melting Onset (Solidus), °C 1400
1590
Specific Heat Capacity, J/kg-K 480
550
Thermal Conductivity, W/m-K 48
8.1
Thermal Expansion, µm/m-K 13
9.1

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
1.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.5
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 2.2
37
Density, g/cm3 7.7
4.5
Embodied Carbon, kg CO2/kg material 1.5
36
Embodied Energy, MJ/kg 20
580
Embodied Water, L/kg 48
150

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 69
43 to 60
Strength to Weight: Bending, points 44
39 to 48
Thermal Diffusivity, mm2/s 13
3.3
Thermal Shock Resistance, points 58
52 to 71

Alloy Composition

Aluminum (Al), % 0
2.5 to 3.5
Carbon (C), % 0.5 to 0.6
0 to 0.080
Chromium (Cr), % 0.5 to 0.8
0
Copper (Cu), % 0 to 0.12
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 96.5 to 97.8
0 to 0.25
Manganese (Mn), % 0.5 to 0.9
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.15
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 1.2 to 1.6
0
Sulfur (S), % 0 to 0.025
0
Titanium (Ti), % 0
92.6 to 95.5
Vanadium (V), % 0
2.0 to 3.0
Residuals, % 0
0 to 0.4