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Grade 31 Titanium vs. EN 1.5450 Steel

Grade 31 titanium belongs to the titanium alloys classification, while EN 1.5450 steel belongs to the iron alloys. There are 29 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 grade 31 titanium and the bottom bar is EN 1.5450 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 20
19
Fatigue Strength, MPa 300
310
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 41
73
Shear Strength, MPa 320
380
Tensile Strength: Ultimate (UTS), MPa 510
620
Tensile Strength: Yield (Proof), MPa 450
460

Thermal Properties

Latent Heat of Fusion, J/g 420
250
Maximum Temperature: Mechanical, °C 320
410
Melting Completion (Liquidus), °C 1660
1470
Melting Onset (Solidus), °C 1610
1420
Specific Heat Capacity, J/kg-K 540
470
Thermal Conductivity, W/m-K 21
49
Thermal Expansion, µm/m-K 8.7
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.4
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 6.9
8.2

Otherwise Unclassified Properties

Density, g/cm3 4.5
7.9
Embodied Carbon, kg CO2/kg material 36
1.5
Embodied Energy, MJ/kg 600
20
Embodied Water, L/kg 230
49

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 99
110
Resilience: Unit (Modulus of Resilience), kJ/m3 940
550
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
24
Strength to Weight: Axial, points 32
22
Strength to Weight: Bending, points 32
20
Thermal Diffusivity, mm2/s 8.5
13
Thermal Shock Resistance, points 39
18

Alloy Composition

Aluminum (Al), % 0
0 to 0.060
Boron (B), % 0
0.0020 to 0.0060
Carbon (C), % 0 to 0.080
0.060 to 0.1
Chromium (Cr), % 0
0 to 0.2
Cobalt (Co), % 0.2 to 0.8
0
Copper (Cu), % 0
0 to 0.3
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.3
97.6 to 98.8
Manganese (Mn), % 0
0.6 to 0.8
Molybdenum (Mo), % 0
0.4 to 0.5
Nitrogen (N), % 0 to 0.050
0
Oxygen (O), % 0 to 0.35
0
Palladium (Pd), % 0.040 to 0.080
0
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0
0.1 to 0.35
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 97.9 to 99.76
0 to 0.060
Residuals, % 0 to 0.4
0