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Grade FDSiCr Steel vs. Grade 17 Titanium

Grade FDSiCr steel belongs to the iron alloys classification, while grade 17 titanium belongs to the titanium alloys. There are 24 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is grade FDSiCr steel and the bottom bar is grade 17 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
34
Shear Modulus, GPa 80
38
Tensile Strength: Ultimate (UTS), MPa 1930
270

Thermal Properties

Latent Heat of Fusion, J/g 270
420
Maximum Temperature: Mechanical, °C 410
320
Melting Completion (Liquidus), °C 1440
1660
Melting Onset (Solidus), °C 1400
1610
Specific Heat Capacity, J/kg-K 480
540
Thermal Conductivity, W/m-K 48
23
Thermal Expansion, µm/m-K 13
8.7

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
3.7
Electrical Conductivity: Equal Weight (Specific), % IACS 8.5
7.3

Otherwise Unclassified Properties

Density, g/cm3 7.7
4.5
Embodied Carbon, kg CO2/kg material 1.5
36
Embodied Energy, MJ/kg 20
600
Embodied Water, L/kg 48
230

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 69
17
Strength to Weight: Bending, points 44
21
Thermal Diffusivity, mm2/s 13
9.3
Thermal Shock Resistance, points 58
21

Alloy Composition

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 0.2
Manganese (Mn), % 0.5 to 0.9
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.18
Palladium (Pd), % 0
0.040 to 0.080
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
99.015 to 99.96
Residuals, % 0
0 to 0.4