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Titanium 6-2-4-2 vs. AISI 420 Stainless Steel

Titanium 6-2-4-2 belongs to the titanium alloys classification, while AISI 420 stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is titanium 6-2-4-2 and the bottom bar is AISI 420 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 8.6
8.0 to 15
Fatigue Strength, MPa 490
220 to 670
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 40
76
Shear Strength, MPa 560
420 to 1010
Tensile Strength: Ultimate (UTS), MPa 950
690 to 1720
Tensile Strength: Yield (Proof), MPa 880
380 to 1310

Thermal Properties

Latent Heat of Fusion, J/g 400
280
Maximum Temperature: Mechanical, °C 300
620
Melting Completion (Liquidus), °C 1590
1510
Melting Onset (Solidus), °C 1540
1450
Specific Heat Capacity, J/kg-K 540
480
Thermal Conductivity, W/m-K 6.9
27
Thermal Expansion, µm/m-K 9.5
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 0.9
3.0
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
3.5

Otherwise Unclassified Properties

Base Metal Price, % relative 42
7.5
Density, g/cm3 4.6
7.7
Embodied Carbon, kg CO2/kg material 32
2.0
Embodied Energy, MJ/kg 520
28
Embodied Water, L/kg 210
100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 79
88 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 3640
380 to 4410
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 34
25
Strength to Weight: Axial, points 57
25 to 62
Strength to Weight: Bending, points 46
22 to 41
Thermal Diffusivity, mm2/s 2.8
7.3
Thermal Shock Resistance, points 67
25 to 62

Alloy Composition


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Aluminum (Al), % 5.5 to 6.5
0
Carbon (C), % 0 to 0.050
0.15 to 0.4
Chromium (Cr), % 0
12 to 14
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.25
82.3 to 87.9
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 1.8 to 2.2
0 to 0.5
Nickel (Ni), % 0
0 to 0.75
Nitrogen (N), % 0 to 0.050
0
Oxygen (O), % 0 to 0.15
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0.060 to 0.12
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 1.8 to 2.2
0
Titanium (Ti), % 83.7 to 87.2
0
Zirconium (Zr), % 3.6 to 4.4
0
Residuals, % 0 to 0.4
0