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Titanium 4-4-2 vs. S21603 Stainless Steel

Titanium 4-4-2 belongs to the titanium alloys classification, while S21603 stainless steel belongs to the iron alloys. There are 27 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 titanium 4-4-2 and the bottom bar is S21603 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 10
45
Fatigue Strength, MPa 590 to 620
360
Poisson's Ratio 0.32
0.28
Reduction in Area, % 20
57
Shear Modulus, GPa 42
79
Shear Strength, MPa 690 to 750
490
Tensile Strength: Ultimate (UTS), MPa 1150 to 1250
690
Tensile Strength: Yield (Proof), MPa 1030 to 1080
390

Thermal Properties

Latent Heat of Fusion, J/g 410
290
Maximum Temperature: Mechanical, °C 310
990
Melting Completion (Liquidus), °C 1610
1420
Melting Onset (Solidus), °C 1560
1380
Specific Heat Capacity, J/kg-K 540
480
Thermal Expansion, µm/m-K 8.6
17

Otherwise Unclassified Properties

Base Metal Price, % relative 39
17
Density, g/cm3 4.7
7.7
Embodied Carbon, kg CO2/kg material 30
3.6
Embodied Energy, MJ/kg 480
50
Embodied Water, L/kg 180
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 120
270
Resilience: Unit (Modulus of Resilience), kJ/m3 4700 to 5160
380
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 34
25
Strength to Weight: Axial, points 68 to 74
25
Strength to Weight: Bending, points 52 to 55
22
Thermal Shock Resistance, points 86 to 93
15

Alloy Composition

Aluminum (Al), % 3.0 to 5.0
0
Carbon (C), % 0 to 0.080
0 to 0.030
Chromium (Cr), % 0
17.5 to 22
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.2
57.6 to 67.8
Manganese (Mn), % 0
7.5 to 9.0
Molybdenum (Mo), % 3.0 to 5.0
2.0 to 3.0
Nickel (Ni), % 0
5.0 to 7.0
Nitrogen (N), % 0 to 0.050
0.25 to 0.5
Oxygen (O), % 0 to 0.25
0
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0.3 to 0.7
0 to 0.75
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 1.5 to 2.5
0
Titanium (Ti), % 85.8 to 92.2
0
Residuals, % 0 to 0.4
0