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Grade 31 Titanium vs. EN 1.8825 Steel

Grade 31 titanium belongs to the titanium alloys classification, while EN 1.8825 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 1.8825 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 20
22
Fatigue Strength, MPa 300
290
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 41
73
Shear Strength, MPa 320
360
Tensile Strength: Ultimate (UTS), MPa 510
570
Tensile Strength: Yield (Proof), MPa 450
420

Thermal Properties

Latent Heat of Fusion, J/g 420
250
Maximum Temperature: Mechanical, °C 320
410
Melting Completion (Liquidus), °C 1660
1460
Melting Onset (Solidus), °C 1610
1420
Specific Heat Capacity, J/kg-K 540
470
Thermal Conductivity, W/m-K 21
44
Thermal Expansion, µm/m-K 8.7
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.4
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 6.9
8.6

Otherwise Unclassified Properties

Density, g/cm3 4.5
7.8
Embodied Carbon, kg CO2/kg material 36
1.7
Embodied Energy, MJ/kg 600
23
Embodied Water, L/kg 230
50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 99
110
Resilience: Unit (Modulus of Resilience), kJ/m3 940
460
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
24
Strength to Weight: Axial, points 32
20
Strength to Weight: Bending, points 32
19
Thermal Diffusivity, mm2/s 8.5
12
Thermal Shock Resistance, points 39
17

Alloy Composition

Aluminum (Al), % 0
0.015 to 0.054
Carbon (C), % 0 to 0.080
0 to 0.18
Chromium (Cr), % 0
0 to 0.35
Cobalt (Co), % 0.2 to 0.8
0
Copper (Cu), % 0
0 to 0.6
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.3
95.1 to 99.985
Manganese (Mn), % 0
0 to 1.8
Molybdenum (Mo), % 0
0 to 0.23
Nickel (Ni), % 0
0 to 0.85
Niobium (Nb), % 0
0 to 0.060
Nitrogen (N), % 0 to 0.050
0 to 0.027
Oxygen (O), % 0 to 0.35
0
Palladium (Pd), % 0.040 to 0.080
0
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0
0 to 0.55
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 97.9 to 99.76
0 to 0.060
Vanadium (V), % 0
0 to 0.14
Residuals, % 0 to 0.4
0