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Grade 27 Titanium vs. EN 1.4571 Stainless Steel

Grade 27 titanium belongs to the titanium alloys classification, while EN 1.4571 stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is grade 27 titanium and the bottom bar is EN 1.4571 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 27
14 to 40
Fatigue Strength, MPa 170
200 to 330
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 41
78
Shear Strength, MPa 180
410 to 550
Tensile Strength: Ultimate (UTS), MPa 270
600 to 900
Tensile Strength: Yield (Proof), MPa 230
230 to 570

Thermal Properties

Latent Heat of Fusion, J/g 420
290
Maximum Temperature: Mechanical, °C 320
950
Melting Completion (Liquidus), °C 1660
1440
Melting Onset (Solidus), °C 1610
1400
Specific Heat Capacity, J/kg-K 540
470
Thermal Conductivity, W/m-K 21
15
Thermal Expansion, µm/m-K 8.7
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 7.1
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 37
19
Density, g/cm3 4.5
7.9
Embodied Carbon, kg CO2/kg material 33
3.9
Embodied Energy, MJ/kg 530
54
Embodied Water, L/kg 320
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 70
110 to 190
Resilience: Unit (Modulus of Resilience), kJ/m3 240
130 to 820
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 17
21 to 32
Strength to Weight: Bending, points 21
20 to 26
Thermal Diffusivity, mm2/s 8.8
4.0
Thermal Shock Resistance, points 21
13 to 20

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.080
Chromium (Cr), % 0
16.5 to 18.5
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.2
61.7 to 71
Manganese (Mn), % 0
0 to 2.0
Molybdenum (Mo), % 0
2.0 to 2.5
Nickel (Ni), % 0
10.5 to 13.5
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.18
0
Phosphorus (P), % 0
0 to 0.045
Ruthenium (Ru), % 0.080 to 0.14
0
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 99 to 99.92
0 to 0.7
Residuals, % 0 to 0.4
0