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Grade 4 Titanium vs. EN 1.8159 Steel

Grade 4 titanium belongs to the titanium alloys classification, while EN 1.8159 steel belongs to the iron alloys. There are 25 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is grade 4 titanium and the bottom bar is EN 1.8159 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
200 to 360
Elastic (Young's, Tensile) Modulus, GPa 110
190
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 41
73
Tensile Strength: Ultimate (UTS), MPa 640
660 to 1980

Thermal Properties

Latent Heat of Fusion, J/g 420
250
Maximum Temperature: Mechanical, °C 320
420
Melting Completion (Liquidus), °C 1660
1460
Melting Onset (Solidus), °C 1610
1410
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
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 6.3
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 37
2.3
Density, g/cm3 4.5
7.8
Embodied Carbon, kg CO2/kg material 31
1.9
Embodied Energy, MJ/kg 500
26
Embodied Water, L/kg 110
52

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
24
Strength to Weight: Axial, points 40
23 to 70
Strength to Weight: Bending, points 37
21 to 45
Thermal Diffusivity, mm2/s 7.6
13
Thermal Shock Resistance, points 46
19 to 58

Alloy Composition

Carbon (C), % 0 to 0.080
0.47 to 0.55
Chromium (Cr), % 0
0.9 to 1.2
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.5
96.4 to 97.8
Manganese (Mn), % 0
0.7 to 1.1
Nitrogen (N), % 0 to 0.050
0
Oxygen (O), % 0 to 0.4
0
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0
0 to 0.4
Sulfur (S), % 0
0 to 0.035
Titanium (Ti), % 98.6 to 100
0
Vanadium (V), % 0
0.1 to 0.25
Residuals, % 0 to 0.4
0