MakeItFrom.com
Menu (ESC)

Grade FDSiCrV Steel vs. Grade 18 Titanium

Grade FDSiCrV steel belongs to the iron alloys classification, while grade 18 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 FDSiCrV steel and the bottom bar is grade 18 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
23
Shear Modulus, GPa 80
40
Tensile Strength: Ultimate (UTS), MPa 2100
690 to 980

Thermal Properties

Latent Heat of Fusion, J/g 270
410
Maximum Temperature: Mechanical, °C 420
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 47
8.3
Thermal Expansion, µm/m-K 13
9.9

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
1.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
2.7

Otherwise Unclassified Properties

Density, g/cm3 7.7
4.5
Embodied Carbon, kg CO2/kg material 1.9
41
Embodied Energy, MJ/kg 26
670
Embodied Water, L/kg 50
270

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 75
43 to 61
Strength to Weight: Bending, points 47
39 to 49
Thermal Diffusivity, mm2/s 13
3.4
Thermal Shock Resistance, points 63
47 to 67

Alloy Composition

Aluminum (Al), % 0
2.5 to 3.5
Carbon (C), % 0.5 to 0.7
0 to 0.080
Chromium (Cr), % 0.5 to 1.0
0
Copper (Cu), % 0 to 0.12
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 96 to 97.8
0 to 0.25
Manganese (Mn), % 0.4 to 0.9
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.15
Palladium (Pd), % 0
0.040 to 0.080
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 1.2 to 1.7
0
Sulfur (S), % 0 to 0.025
0
Titanium (Ti), % 0
92.5 to 95.5
Vanadium (V), % 0.1 to 0.25
2.0 to 3.0
Residuals, % 0
0 to 0.4