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EN 1.7149 Steel vs. Titanium 4-4-2

EN 1.7149 steel belongs to the iron alloys classification, while titanium 4-4-2 belongs to the titanium alloys. There are 22 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is EN 1.7149 steel and the bottom bar is titanium 4-4-2.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 73
42
Tensile Strength: Ultimate (UTS), MPa 500 to 1460
1150 to 1250

Thermal Properties

Latent Heat of Fusion, J/g 250
410
Maximum Temperature: Mechanical, °C 420
310
Melting Completion (Liquidus), °C 1460
1610
Melting Onset (Solidus), °C 1420
1560
Specific Heat Capacity, J/kg-K 470
540
Thermal Conductivity, W/m-K 46
6.7
Thermal Expansion, µm/m-K 13
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 2.3
39
Density, g/cm3 7.8
4.7
Embodied Carbon, kg CO2/kg material 1.5
30
Embodied Energy, MJ/kg 19
480
Embodied Water, L/kg 52
180

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
34
Strength to Weight: Axial, points 18 to 52
68 to 74
Strength to Weight: Bending, points 18 to 36
52 to 55
Thermal Diffusivity, mm2/s 12
2.6
Thermal Shock Resistance, points 15 to 42
86 to 93

Alloy Composition

Aluminum (Al), % 0
3.0 to 5.0
Carbon (C), % 0.17 to 0.22
0 to 0.080
Chromium (Cr), % 1.0 to 1.3
0
Copper (Cu), % 0 to 0.25
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 96.5 to 97.7
0 to 0.2
Manganese (Mn), % 1.1 to 1.4
0
Molybdenum (Mo), % 0
3.0 to 5.0
Nitrogen (N), % 0
0 to 0.050
Oxygen (O), % 0
0 to 0.25
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0 to 0.3
0.3 to 0.7
Sulfur (S), % 0.020 to 0.040
0
Tin (Sn), % 0
1.5 to 2.5
Titanium (Ti), % 0
85.8 to 92.2
Residuals, % 0
0 to 0.4