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Grade 27 Titanium vs. EN 1.4806 Stainless Steel

Grade 27 titanium belongs to the titanium alloys classification, while EN 1.4806 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 27 titanium and the bottom bar is EN 1.4806 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 27
6.8
Fatigue Strength, MPa 170
120
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 41
75
Tensile Strength: Ultimate (UTS), MPa 270
470
Tensile Strength: Yield (Proof), MPa 230
250

Thermal Properties

Latent Heat of Fusion, J/g 420
320
Maximum Temperature: Mechanical, °C 320
1000
Melting Completion (Liquidus), °C 1660
1380
Melting Onset (Solidus), °C 1610
1340
Specific Heat Capacity, J/kg-K 540
480
Thermal Conductivity, W/m-K 21
12
Thermal Expansion, µm/m-K 8.7
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 7.1
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 37
31
Density, g/cm3 4.5
8.0
Embodied Carbon, kg CO2/kg material 33
5.4
Embodied Energy, MJ/kg 530
76
Embodied Water, L/kg 320
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 70
27
Resilience: Unit (Modulus of Resilience), kJ/m3 240
160
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
24
Strength to Weight: Axial, points 17
16
Strength to Weight: Bending, points 21
17
Thermal Diffusivity, mm2/s 8.8
3.1
Thermal Shock Resistance, points 21
11

Alloy Composition

Carbon (C), % 0 to 0.080
0.3 to 0.5
Chromium (Cr), % 0
16 to 18
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.2
40.4 to 48.7
Manganese (Mn), % 0
0 to 2.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0
34 to 36
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
1.0 to 2.5
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 99 to 99.92
0
Residuals, % 0 to 0.4
0