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EN 1.4515 Stainless Steel vs. Grade 27 Titanium

EN 1.4515 stainless steel belongs to the iron alloys classification, while grade 27 titanium belongs to the titanium 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 EN 1.4515 stainless steel and the bottom bar is grade 27 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 25
27
Fatigue Strength, MPa 380
170
Poisson's Ratio 0.27
0.32
Shear Modulus, GPa 80
41
Tensile Strength: Ultimate (UTS), MPa 730
270
Tensile Strength: Yield (Proof), MPa 550
230

Thermal Properties

Latent Heat of Fusion, J/g 300
420
Maximum Temperature: Mechanical, °C 1100
320
Melting Completion (Liquidus), °C 1440
1660
Melting Onset (Solidus), °C 1390
1610
Specific Heat Capacity, J/kg-K 480
540
Thermal Conductivity, W/m-K 16
21
Thermal Expansion, µm/m-K 13
8.7

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
3.6
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
7.1

Otherwise Unclassified Properties

Base Metal Price, % relative 19
37
Density, g/cm3 7.8
4.5
Embodied Carbon, kg CO2/kg material 3.8
33
Embodied Energy, MJ/kg 53
530
Embodied Water, L/kg 180
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
70
Resilience: Unit (Modulus of Resilience), kJ/m3 730
240
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 26
17
Strength to Weight: Bending, points 23
21
Thermal Diffusivity, mm2/s 4.3
8.8
Thermal Shock Resistance, points 20
21

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.080
Chromium (Cr), % 24.5 to 26.5
0
Copper (Cu), % 0.8 to 1.3
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 58.4 to 66.6
0 to 0.2
Manganese (Mn), % 0 to 2.0
0
Molybdenum (Mo), % 2.5 to 3.5
0
Nickel (Ni), % 5.5 to 7.0
0
Nitrogen (N), % 0.12 to 0.25
0 to 0.030
Oxygen (O), % 0
0 to 0.18
Phosphorus (P), % 0 to 0.030
0
Ruthenium (Ru), % 0
0.080 to 0.14
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.020
0
Titanium (Ti), % 0
99 to 99.92
Residuals, % 0
0 to 0.4