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EN 1.4905 Stainless Steel vs. Grade 27 Titanium

EN 1.4905 stainless 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 (4, in this case) are not shown.

For each property being compared, the top bar is EN 1.4905 stainless 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, % 19
27
Fatigue Strength, MPa 330
170
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 76
41
Shear Strength, MPa 460
180
Tensile Strength: Ultimate (UTS), MPa 740
270
Tensile Strength: Yield (Proof), MPa 510
230

Thermal Properties

Latent Heat of Fusion, J/g 270
420
Maximum Temperature: Mechanical, °C 660
320
Melting Completion (Liquidus), °C 1480
1660
Melting Onset (Solidus), °C 1440
1610
Specific Heat Capacity, J/kg-K 470
540
Thermal Conductivity, W/m-K 26
21
Thermal Expansion, µm/m-K 11
8.7

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.7
3.6
Electrical Conductivity: Equal Weight (Specific), % IACS 4.2
7.1

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
37
Density, g/cm3 7.9
4.5
Embodied Carbon, kg CO2/kg material 2.8
33
Embodied Energy, MJ/kg 40
530
Embodied Water, L/kg 90
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
70
Resilience: Unit (Modulus of Resilience), kJ/m3 680
240
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
35
Strength to Weight: Axial, points 26
17
Strength to Weight: Bending, points 23
21
Thermal Diffusivity, mm2/s 7.0
8.8
Thermal Shock Resistance, points 25
21

Alloy Composition

Aluminum (Al), % 0 to 0.040
0
Boron (B), % 0.00050 to 0.0050
0
Carbon (C), % 0.090 to 0.13
0 to 0.080
Chromium (Cr), % 8.5 to 9.5
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 86.2 to 88.8
0 to 0.2
Manganese (Mn), % 0.3 to 0.6
0
Molybdenum (Mo), % 0.9 to 1.1
0
Nickel (Ni), % 0.1 to 0.4
0
Niobium (Nb), % 0.060 to 0.1
0
Nitrogen (N), % 0.050 to 0.090
0 to 0.030
Oxygen (O), % 0
0 to 0.18
Phosphorus (P), % 0 to 0.020
0
Ruthenium (Ru), % 0
0.080 to 0.14
Silicon (Si), % 0.1 to 0.5
0
Sulfur (S), % 0 to 0.010
0
Titanium (Ti), % 0
99 to 99.92
Tungsten (W), % 0.9 to 1.1
0
Vanadium (V), % 0.18 to 0.25
0
Residuals, % 0
0 to 0.4