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EN 1.4634 Stainless Steel vs. Titanium 6-2-4-2

EN 1.4634 stainless steel belongs to the iron alloys classification, while titanium 6-2-4-2 belongs to the titanium alloys. There are 30 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is EN 1.4634 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, % 21
8.6
Fatigue Strength, MPa 180
490
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 77
40
Shear Strength, MPa 340
560
Tensile Strength: Ultimate (UTS), MPa 540
950
Tensile Strength: Yield (Proof), MPa 280
880

Thermal Properties

Latent Heat of Fusion, J/g 290
400
Maximum Temperature: Mechanical, °C 900
300
Melting Completion (Liquidus), °C 1430
1590
Melting Onset (Solidus), °C 1390
1540
Specific Heat Capacity, J/kg-K 480
540
Thermal Conductivity, W/m-K 21
6.9
Thermal Expansion, µm/m-K 10
9.5

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
0.9
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
1.8

Otherwise Unclassified Properties

Base Metal Price, % relative 13
42
Density, g/cm3 7.7
4.6
Embodied Carbon, kg CO2/kg material 2.9
32
Embodied Energy, MJ/kg 42
520
Embodied Water, L/kg 140
210

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 93
79
Resilience: Unit (Modulus of Resilience), kJ/m3 200
3640
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
34
Strength to Weight: Axial, points 20
57
Strength to Weight: Bending, points 19
46
Thermal Diffusivity, mm2/s 5.8
2.8
Thermal Shock Resistance, points 19
67

Alloy Composition

Aluminum (Al), % 0.2 to 1.5
5.5 to 6.5
Carbon (C), % 0 to 0.030
0 to 0.050
Chromium (Cr), % 17.5 to 18.5
0
Copper (Cu), % 0 to 0.5
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 74.9 to 81.8
0 to 0.25
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 0 to 0.5
1.8 to 2.2
Nickel (Ni), % 0 to 0.5
0
Niobium (Nb), % 0.3 to 1.0
0
Nitrogen (N), % 0
0 to 0.050
Oxygen (O), % 0
0 to 0.15
Phosphorus (P), % 0 to 0.050
0
Silicon (Si), % 0.2 to 1.5
0.060 to 0.12
Sulfur (S), % 0 to 0.050
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