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EN 1.4557 Stainless Steel vs. Titanium 6-2-4-2

EN 1.4557 stainless steel belongs to the iron alloys classification, while titanium 6-2-4-2 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 1.4557 stainless steel and the bottom bar is titanium 6-2-4-2.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 40
8.6
Fatigue Strength, MPa 260
490
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 80
40
Tensile Strength: Ultimate (UTS), MPa 560
950
Tensile Strength: Yield (Proof), MPa 300
880

Thermal Properties

Latent Heat of Fusion, J/g 300
400
Maximum Temperature: Mechanical, °C 1090
300
Melting Completion (Liquidus), °C 1460
1590
Melting Onset (Solidus), °C 1420
1540
Specific Heat Capacity, J/kg-K 460
540
Thermal Conductivity, W/m-K 15
6.9
Thermal Expansion, µm/m-K 17
9.5

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
0.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.2
1.8

Otherwise Unclassified Properties

Base Metal Price, % relative 29
42
Density, g/cm3 8.0
4.6
Embodied Carbon, kg CO2/kg material 5.6
32
Embodied Energy, MJ/kg 76
520
Embodied Water, L/kg 190
210

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
79
Resilience: Unit (Modulus of Resilience), kJ/m3 210
3640
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
34
Strength to Weight: Axial, points 19
57
Strength to Weight: Bending, points 19
46
Thermal Diffusivity, mm2/s 4.0
2.8
Thermal Shock Resistance, points 12
67

Alloy Composition

Aluminum (Al), % 0
5.5 to 6.5
Carbon (C), % 0 to 0.020
0 to 0.050
Chromium (Cr), % 19.5 to 20.5
0
Copper (Cu), % 0.5 to 1.0
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 49.5 to 56.3
0 to 0.25
Manganese (Mn), % 0 to 1.2
0
Molybdenum (Mo), % 6.0 to 7.0
1.8 to 2.2
Nickel (Ni), % 17.5 to 19.5
0
Nitrogen (N), % 0.18 to 0.24
0 to 0.050
Oxygen (O), % 0
0 to 0.15
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 1.0
0.060 to 0.12
Sulfur (S), % 0 to 0.010
0
Tin (Sn), % 0
1.8 to 2.2
Titanium (Ti), % 0
83.7 to 87.2
Zirconium (Zr), % 0
3.6 to 4.4
Residuals, % 0
0 to 0.4