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S21603 Stainless Steel vs. Titanium 6-2-4-2

S21603 stainless steel belongs to the iron alloys classification, while titanium 6-2-4-2 belongs to the titanium alloys. There are 27 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is S21603 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, % 45
8.6
Fatigue Strength, MPa 360
490
Poisson's Ratio 0.28
0.32
Reduction in Area, % 57
21
Shear Modulus, GPa 79
40
Shear Strength, MPa 490
560
Tensile Strength: Ultimate (UTS), MPa 690
950
Tensile Strength: Yield (Proof), MPa 390
880

Thermal Properties

Latent Heat of Fusion, J/g 290
400
Maximum Temperature: Mechanical, °C 990
300
Melting Completion (Liquidus), °C 1420
1590
Melting Onset (Solidus), °C 1380
1540
Specific Heat Capacity, J/kg-K 480
540
Thermal Expansion, µm/m-K 17
9.5

Otherwise Unclassified Properties

Base Metal Price, % relative 17
42
Density, g/cm3 7.7
4.6
Embodied Carbon, kg CO2/kg material 3.6
32
Embodied Energy, MJ/kg 50
520
Embodied Water, L/kg 160
210

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 270
79
Resilience: Unit (Modulus of Resilience), kJ/m3 380
3640
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
34
Strength to Weight: Axial, points 25
57
Strength to Weight: Bending, points 22
46
Thermal Shock Resistance, points 15
67

Alloy Composition

Aluminum (Al), % 0
5.5 to 6.5
Carbon (C), % 0 to 0.030
0 to 0.050
Chromium (Cr), % 17.5 to 22
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 57.6 to 67.8
0 to 0.25
Manganese (Mn), % 7.5 to 9.0
0
Molybdenum (Mo), % 2.0 to 3.0
1.8 to 2.2
Nickel (Ni), % 5.0 to 7.0
0
Nitrogen (N), % 0.25 to 0.5
0 to 0.050
Oxygen (O), % 0
0 to 0.15
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 0.75
0.060 to 0.12
Sulfur (S), % 0 to 0.030
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