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EN 1.7703 Steel vs. Grade 14 Titanium

EN 1.7703 steel belongs to the iron alloys classification, while grade 14 titanium belongs to the titanium alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is EN 1.7703 steel and the bottom bar is grade 14 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 20
23
Fatigue Strength, MPa 320 to 340
220
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 74
41
Shear Strength, MPa 420 to 430
290
Tensile Strength: Ultimate (UTS), MPa 670 to 690
460
Tensile Strength: Yield (Proof), MPa 460 to 500
310

Thermal Properties

Latent Heat of Fusion, J/g 250
420
Maximum Temperature: Mechanical, °C 460
320
Melting Completion (Liquidus), °C 1470
1660
Melting Onset (Solidus), °C 1430
1610
Specific Heat Capacity, J/kg-K 470
540
Thermal Conductivity, W/m-K 39
21
Thermal Expansion, µm/m-K 13
8.7

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
3.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
6.9

Otherwise Unclassified Properties

Base Metal Price, % relative 4.2
37
Density, g/cm3 7.9
4.5
Embodied Carbon, kg CO2/kg material 2.5
32
Embodied Energy, MJ/kg 35
520
Embodied Water, L/kg 61
210

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 130
93
Resilience: Unit (Modulus of Resilience), kJ/m3 570 to 650
450
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
35
Strength to Weight: Axial, points 24
28
Strength to Weight: Bending, points 22
29
Thermal Diffusivity, mm2/s 11
8.5
Thermal Shock Resistance, points 19 to 20
35

Alloy Composition

Carbon (C), % 0.11 to 0.15
0 to 0.080
Chromium (Cr), % 2.0 to 2.5
0
Copper (Cu), % 0 to 0.2
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 94.6 to 96.4
0 to 0.3
Manganese (Mn), % 0.3 to 0.6
0
Molybdenum (Mo), % 0.9 to 1.1
0
Nickel (Ni), % 0 to 0.25
0.4 to 0.6
Niobium (Nb), % 0 to 0.070
0
Nitrogen (N), % 0 to 0.012
0 to 0.030
Oxygen (O), % 0
0 to 0.15
Phosphorus (P), % 0 to 0.015
0
Ruthenium (Ru), % 0
0.040 to 0.060
Silicon (Si), % 0 to 0.1
0
Sulfur (S), % 0 to 0.0050
0
Titanium (Ti), % 0 to 0.030
98.4 to 99.56
Vanadium (V), % 0.25 to 0.35
0
Residuals, % 0
0 to 0.4