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EN 1.4988 Stainless Steel vs. Titanium 6-5-0.5

EN 1.4988 stainless steel belongs to the iron alloys classification, while titanium 6-5-0.5 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 1.4988 stainless steel and the bottom bar is titanium 6-5-0.5.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
100
Elongation at Break, % 34
6.7
Fatigue Strength, MPa 230
530
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 77
40
Shear Strength, MPa 430
630
Tensile Strength: Ultimate (UTS), MPa 640
1080
Tensile Strength: Yield (Proof), MPa 290
990

Thermal Properties

Latent Heat of Fusion, J/g 290
410
Maximum Temperature: Mechanical, °C 920
300
Melting Completion (Liquidus), °C 1450
1610
Melting Onset (Solidus), °C 1400
1560
Specific Heat Capacity, J/kg-K 470
550
Thermal Conductivity, W/m-K 15
4.2
Thermal Expansion, µm/m-K 16
9.4

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
1.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.1

Otherwise Unclassified Properties

Base Metal Price, % relative 23
41
Density, g/cm3 7.9
4.5
Embodied Carbon, kg CO2/kg material 6.0
33
Embodied Energy, MJ/kg 89
540
Embodied Water, L/kg 150
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
71
Resilience: Unit (Modulus of Resilience), kJ/m3 210
4630
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 23
67
Strength to Weight: Bending, points 21
52
Thermal Diffusivity, mm2/s 4.0
1.7
Thermal Shock Resistance, points 14
79

Alloy Composition

Aluminum (Al), % 0
5.7 to 6.3
Carbon (C), % 0.040 to 0.1
0 to 0.080
Chromium (Cr), % 15.5 to 17.5
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 62.1 to 69.5
0 to 0.2
Manganese (Mn), % 0 to 1.5
0
Molybdenum (Mo), % 1.1 to 1.5
0.25 to 0.75
Nickel (Ni), % 12.5 to 14.5
0
Niobium (Nb), % 0.4 to 1.2
0
Nitrogen (N), % 0.060 to 0.14
0 to 0.050
Oxygen (O), % 0
0 to 0.19
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0.3 to 0.6
0 to 0.4
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0
85.6 to 90.1
Vanadium (V), % 0.6 to 0.85
0
Zirconium (Zr), % 0
4.0 to 6.0
Residuals, % 0
0 to 0.4