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Grade 29 Titanium vs. EN 1.4405 Stainless Steel

Grade 29 titanium belongs to the titanium alloys classification, while EN 1.4405 stainless steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is grade 29 titanium and the bottom bar is EN 1.4405 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 6.8 to 11
17
Fatigue Strength, MPa 460 to 510
370
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 40
77
Tensile Strength: Ultimate (UTS), MPa 930 to 940
860
Tensile Strength: Yield (Proof), MPa 850 to 870
610

Thermal Properties

Latent Heat of Fusion, J/g 410
280
Maximum Temperature: Mechanical, °C 340
870
Melting Completion (Liquidus), °C 1610
1450
Melting Onset (Solidus), °C 1560
1400
Specific Heat Capacity, J/kg-K 560
480
Thermal Conductivity, W/m-K 7.3
17
Thermal Expansion, µm/m-K 9.3
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.0
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 36
13
Density, g/cm3 4.5
7.8
Embodied Carbon, kg CO2/kg material 39
2.8
Embodied Energy, MJ/kg 640
39
Embodied Water, L/kg 410
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 62 to 100
130
Resilience: Unit (Modulus of Resilience), kJ/m3 3420 to 3540
950
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 58 to 59
31
Strength to Weight: Bending, points 47 to 48
26
Thermal Diffusivity, mm2/s 2.9
4.6
Thermal Shock Resistance, points 68 to 69
29

Alloy Composition

Aluminum (Al), % 5.5 to 6.5
0
Carbon (C), % 0 to 0.080
0 to 0.060
Chromium (Cr), % 0
15 to 17
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.25
73.6 to 80.3
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
0.7 to 1.5
Nickel (Ni), % 0
4.0 to 6.0
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.13
0
Phosphorus (P), % 0
0 to 0.035
Ruthenium (Ru), % 0.080 to 0.14
0
Silicon (Si), % 0
0 to 0.8
Sulfur (S), % 0
0 to 0.025
Titanium (Ti), % 88 to 90.9
0
Vanadium (V), % 3.5 to 4.5
0
Residuals, % 0 to 0.4
0