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EN 1.4508 Stainless Steel vs. Grade 17 Titanium

EN 1.4508 stainless steel belongs to the iron alloys classification, while grade 17 titanium belongs to the titanium alloys. There are 28 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is EN 1.4508 stainless steel and the bottom bar is grade 17 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 34
27
Fatigue Strength, MPa 210
160
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 79
38
Tensile Strength: Ultimate (UTS), MPa 570
270
Tensile Strength: Yield (Proof), MPa 260
210

Thermal Properties

Latent Heat of Fusion, J/g 300
420
Maximum Temperature: Mechanical, °C 1000
320
Melting Completion (Liquidus), °C 1450
1660
Melting Onset (Solidus), °C 1400
1610
Specific Heat Capacity, J/kg-K 470
540
Thermal Conductivity, W/m-K 15
23
Thermal Expansion, µm/m-K 12
8.7

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
3.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
7.3

Otherwise Unclassified Properties

Density, g/cm3 7.9
4.5
Embodied Carbon, kg CO2/kg material 4.0
36
Embodied Energy, MJ/kg 55
600
Embodied Water, L/kg 160
230

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 160
68
Resilience: Unit (Modulus of Resilience), kJ/m3 170
220
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 20
17
Strength to Weight: Bending, points 19
21
Thermal Diffusivity, mm2/s 4.1
9.3
Thermal Shock Resistance, points 17
21

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.080
Chromium (Cr), % 18 to 20
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 61.2 to 69.9
0 to 0.2
Manganese (Mn), % 0 to 1.5
0
Molybdenum (Mo), % 3.0 to 3.5
0
Nickel (Ni), % 9.0 to 12
0
Nitrogen (N), % 0.1 to 0.2
0 to 0.030
Oxygen (O), % 0
0 to 0.18
Palladium (Pd), % 0
0.040 to 0.080
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.5
0
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
99.015 to 99.96
Residuals, % 0
0 to 0.4