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EN 1.4618 Stainless Steel vs. Grade 15 Titanium

EN 1.4618 stainless steel belongs to the iron alloys classification, while grade 15 titanium belongs to the titanium alloys. There are 30 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 1.4618 stainless steel and the bottom bar is grade 15 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 51
20
Fatigue Strength, MPa 240 to 250
290
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 77
41
Shear Strength, MPa 480 to 500
340
Tensile Strength: Ultimate (UTS), MPa 680 to 700
540
Tensile Strength: Yield (Proof), MPa 250 to 260
430

Thermal Properties

Latent Heat of Fusion, J/g 280
420
Maximum Temperature: Mechanical, °C 900
320
Melting Completion (Liquidus), °C 1400
1660
Melting Onset (Solidus), °C 1360
1610
Specific Heat Capacity, J/kg-K 480
540
Thermal Conductivity, W/m-K 15
21
Thermal Expansion, µm/m-K 16
8.7

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
3.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
6.7

Otherwise Unclassified Properties

Base Metal Price, % relative 13
37
Density, g/cm3 7.7
4.5
Embodied Carbon, kg CO2/kg material 2.7
32
Embodied Energy, MJ/kg 39
520
Embodied Water, L/kg 150
210

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 270 to 280
100
Resilience: Unit (Modulus of Resilience), kJ/m3 160 to 170
870
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 24 to 25
33
Strength to Weight: Bending, points 22 to 23
33
Thermal Diffusivity, mm2/s 4.0
8.4
Thermal Shock Resistance, points 15 to 16
41

Alloy Composition

Carbon (C), % 0 to 0.1
0 to 0.080
Chromium (Cr), % 16.5 to 18.5
0
Copper (Cu), % 1.0 to 2.5
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 62.7 to 72.5
0 to 0.3
Manganese (Mn), % 5.5 to 9.5
0
Nickel (Ni), % 4.5 to 5.5
0.4 to 0.6
Nitrogen (N), % 0 to 0.15
0 to 0.050
Oxygen (O), % 0
0 to 0.25
Phosphorus (P), % 0 to 0.070
0
Ruthenium (Ru), % 0
0.040 to 0.060
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.010
0
Titanium (Ti), % 0
98.2 to 99.56
Residuals, % 0
0 to 0.4