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Grade 4 Titanium vs. EN 1.8918 Steel

Grade 4 titanium belongs to the titanium alloys classification, while EN 1.8918 steel belongs to the iron alloys. There are 32 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is grade 4 titanium and the bottom bar is EN 1.8918 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
190
Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 17
19
Fatigue Strength, MPa 340
330
Impact Strength: V-Notched Charpy, J 23
88
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 41
73
Shear Strength, MPa 390
400
Tensile Strength: Ultimate (UTS), MPa 640
640
Tensile Strength: Yield (Proof), MPa 530
490

Thermal Properties

Latent Heat of Fusion, J/g 420
250
Maximum Temperature: Mechanical, °C 320
400
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 19
46
Thermal Expansion, µm/m-K 9.4
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.1
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 6.3
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 37
2.5
Density, g/cm3 4.5
7.8
Embodied Carbon, kg CO2/kg material 31
1.7
Embodied Energy, MJ/kg 500
24
Embodied Water, L/kg 110
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
110
Resilience: Unit (Modulus of Resilience), kJ/m3 1330
640
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
24
Strength to Weight: Axial, points 40
23
Strength to Weight: Bending, points 37
21
Thermal Diffusivity, mm2/s 7.6
12
Thermal Shock Resistance, points 46
19

Alloy Composition

Aluminum (Al), % 0
0.020 to 0.050
Carbon (C), % 0 to 0.080
0 to 0.2
Chromium (Cr), % 0
0 to 0.3
Copper (Cu), % 0
0 to 0.7
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.5
95.2 to 98.9
Manganese (Mn), % 0
1.1 to 1.7
Molybdenum (Mo), % 0
0 to 0.1
Nickel (Ni), % 0
0 to 0.8
Niobium (Nb), % 0
0 to 0.050
Nitrogen (N), % 0 to 0.050
0 to 0.025
Oxygen (O), % 0 to 0.4
0
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0
0 to 0.6
Sulfur (S), % 0
0 to 0.0050
Titanium (Ti), % 98.6 to 100
0 to 0.030
Vanadium (V), % 0
0 to 0.2
Residuals, % 0 to 0.4
0