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EN 1.4584 Stainless Steel vs. Grade 27 Titanium

EN 1.4584 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 (6, in this case) are not shown.

For each property being compared, the top bar is EN 1.4584 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, % 34
27
Fatigue Strength, MPa 170
170
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 79
41
Tensile Strength: Ultimate (UTS), MPa 500
270
Tensile Strength: Yield (Proof), MPa 210
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 460
540
Thermal Conductivity, W/m-K 17
21
Thermal Expansion, µm/m-K 15
8.7

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
3.6
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
7.1

Otherwise Unclassified Properties

Base Metal Price, % relative 31
37
Density, g/cm3 8.1
4.5
Embodied Carbon, kg CO2/kg material 5.7
33
Embodied Energy, MJ/kg 78
530
Embodied Water, L/kg 200
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
70
Resilience: Unit (Modulus of Resilience), kJ/m3 110
240
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
35
Strength to Weight: Axial, points 17
17
Strength to Weight: Bending, points 17
21
Thermal Diffusivity, mm2/s 4.5
8.8
Thermal Shock Resistance, points 12
21

Alloy Composition

Carbon (C), % 0 to 0.025
0 to 0.080
Chromium (Cr), % 19 to 21
0
Copper (Cu), % 1.0 to 3.0
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 41.7 to 52
0 to 0.2
Manganese (Mn), % 0 to 2.0
0
Molybdenum (Mo), % 4.0 to 5.0
0
Nickel (Ni), % 24 to 26
0
Nitrogen (N), % 0 to 0.2
0 to 0.030
Oxygen (O), % 0
0 to 0.18
Phosphorus (P), % 0 to 0.035
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