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EN 1.1127 Steel vs. Grade 27 Titanium

EN 1.1127 steel belongs to the iron alloys classification, while grade 27 titanium belongs to the titanium alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is EN 1.1127 steel and the bottom bar is grade 27 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 14 to 25
27
Fatigue Strength, MPa 280 to 370
170
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 73
41
Shear Strength, MPa 420 to 480
180
Tensile Strength: Ultimate (UTS), MPa 660 to 790
270
Tensile Strength: Yield (Proof), MPa 410 to 580
230

Thermal Properties

Latent Heat of Fusion, J/g 250
420
Maximum Temperature: Mechanical, °C 400
320
Melting Completion (Liquidus), °C 1460
1660
Melting Onset (Solidus), °C 1410
1610
Specific Heat Capacity, J/kg-K 470
540
Thermal Conductivity, W/m-K 49
21
Thermal Expansion, µm/m-K 12
8.7

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
3.6
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
7.1

Otherwise Unclassified Properties

Base Metal Price, % relative 2.1
37
Density, g/cm3 7.8
4.5
Embodied Carbon, kg CO2/kg material 1.5
33
Embodied Energy, MJ/kg 19
530
Embodied Water, L/kg 49
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 90 to 140
70
Resilience: Unit (Modulus of Resilience), kJ/m3 440 to 880
240
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
35
Strength to Weight: Axial, points 23 to 28
17
Strength to Weight: Bending, points 22 to 24
21
Thermal Diffusivity, mm2/s 13
8.8
Thermal Shock Resistance, points 21 to 25
21

Alloy Composition

Carbon (C), % 0.34 to 0.42
0 to 0.080
Chromium (Cr), % 0 to 0.4
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 96.6 to 98.1
0 to 0.2
Manganese (Mn), % 1.4 to 1.7
0
Molybdenum (Mo), % 0 to 0.1
0
Nickel (Ni), % 0 to 0.4
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.18
Phosphorus (P), % 0 to 0.035
0
Ruthenium (Ru), % 0
0.080 to 0.14
Silicon (Si), % 0.15 to 0.35
0
Sulfur (S), % 0 to 0.035
0
Titanium (Ti), % 0
99 to 99.92
Residuals, % 0
0 to 0.4