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Grade 27 Titanium vs. EN 1.4029 Stainless Steel

Grade 27 titanium belongs to the titanium alloys classification, while EN 1.4029 stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is grade 27 titanium and the bottom bar is EN 1.4029 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 27
10 to 20
Fatigue Strength, MPa 170
270 to 400
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 41
76
Shear Strength, MPa 180
440 to 550
Tensile Strength: Ultimate (UTS), MPa 270
700 to 930
Tensile Strength: Yield (Proof), MPa 230
410 to 740

Thermal Properties

Latent Heat of Fusion, J/g 420
270
Maximum Temperature: Mechanical, °C 320
750
Melting Completion (Liquidus), °C 1660
1440
Melting Onset (Solidus), °C 1610
1400
Specific Heat Capacity, J/kg-K 540
480
Thermal Conductivity, W/m-K 21
30
Thermal Expansion, µm/m-K 8.7
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
3.1
Electrical Conductivity: Equal Weight (Specific), % IACS 7.1
3.7

Otherwise Unclassified Properties

Base Metal Price, % relative 37
7.0
Density, g/cm3 4.5
7.7
Embodied Carbon, kg CO2/kg material 33
2.0
Embodied Energy, MJ/kg 530
28
Embodied Water, L/kg 320
100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 70
89 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 240
440 to 1410
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 17
25 to 33
Strength to Weight: Bending, points 21
23 to 27
Thermal Diffusivity, mm2/s 8.8
8.1
Thermal Shock Resistance, points 21
26 to 34

Alloy Composition

Carbon (C), % 0 to 0.080
0.25 to 0.32
Chromium (Cr), % 0
12 to 13.5
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.2
82.8 to 87.6
Manganese (Mn), % 0
0 to 1.5
Molybdenum (Mo), % 0
0 to 0.6
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.18
0
Phosphorus (P), % 0
0 to 0.040
Ruthenium (Ru), % 0.080 to 0.14
0
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0.15 to 0.25
Titanium (Ti), % 99 to 99.92
0
Residuals, % 0 to 0.4
0