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Grade 2 Titanium vs. EN 1.4931 Steel

Grade 2 titanium belongs to the titanium alloys classification, while EN 1.4931 steel belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is grade 2 titanium and the bottom bar is EN 1.4931 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
240
Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 23
17
Fatigue Strength, MPa 250
410
Impact Strength: V-Notched Charpy, J 160
30
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 38
76
Tensile Strength: Ultimate (UTS), MPa 420
810
Tensile Strength: Yield (Proof), MPa 360
620

Thermal Properties

Latent Heat of Fusion, J/g 420
270
Maximum Temperature: Mechanical, °C 320
600
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 22
24
Thermal Expansion, µm/m-K 9.0
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
9.8
Electrical Conductivity: Equal Weight (Specific), % IACS 7.2
11

Otherwise Unclassified Properties

Base Metal Price, % relative 37
8.5
Density, g/cm3 4.5
7.8
Embodied Carbon, kg CO2/kg material 31
2.9
Embodied Energy, MJ/kg 510
42
Embodied Water, L/kg 110
100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 92
130
Resilience: Unit (Modulus of Resilience), kJ/m3 600
970
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 26
29
Strength to Weight: Bending, points 28
25
Thermal Diffusivity, mm2/s 8.9
6.5
Thermal Shock Resistance, points 32
22

Alloy Composition

Carbon (C), % 0 to 0.080
0.2 to 0.26
Chromium (Cr), % 0
11.3 to 12.2
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.3
83.2 to 86.8
Manganese (Mn), % 0
0.5 to 0.8
Molybdenum (Mo), % 0
1.0 to 1.2
Nickel (Ni), % 0
0 to 1.0
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.25
0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
0 to 0.4
Sulfur (S), % 0
0 to 0.020
Titanium (Ti), % 98.9 to 100
0
Tungsten (W), % 0
0 to 0.5
Vanadium (V), % 0
0.25 to 0.35
Residuals, % 0 to 0.4
0