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EN 1.7231 Steel vs. Titanium 4-4-2

EN 1.7231 steel belongs to the iron alloys classification, while titanium 4-4-2 belongs to the titanium alloys. There are 27 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is EN 1.7231 steel and the bottom bar is titanium 4-4-2.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 11 to 12
10
Fatigue Strength, MPa 360 to 500
590 to 620
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 73
42
Tensile Strength: Ultimate (UTS), MPa 790 to 930
1150 to 1250
Tensile Strength: Yield (Proof), MPa 570 to 800
1030 to 1080

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 2.5
39
Density, g/cm3 7.8
4.7
Embodied Carbon, kg CO2/kg material 1.5
30
Embodied Energy, MJ/kg 20
480
Embodied Water, L/kg 51
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 87 to 100
110 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 870 to 1700
4700 to 5160
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
34
Strength to Weight: Axial, points 28 to 33
68 to 74
Strength to Weight: Bending, points 24 to 27
52 to 55
Thermal Diffusivity, mm2/s 12
2.6
Thermal Shock Resistance, points 23 to 27
86 to 93

Alloy Composition


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Aluminum (Al), % 0
3.0 to 5.0
Carbon (C), % 0.38 to 0.45
0 to 0.080
Chromium (Cr), % 0.8 to 1.2
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 96.4 to 98.1
0 to 0.2
Manganese (Mn), % 0.6 to 1.0
0
Molybdenum (Mo), % 0.15 to 0.3
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 0.6
0.3 to 0.7
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
1.5 to 2.5
Titanium (Ti), % 0
85.8 to 92.2
Residuals, % 0
0 to 0.4

Comparable Variants