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S21603 Stainless Steel vs. Grade 9 Titanium

S21603 stainless steel belongs to the iron alloys classification, while grade 9 titanium 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 grade 9 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 45
11 to 17
Fatigue Strength, MPa 360
330 to 480
Poisson's Ratio 0.28
0.32
Reduction in Area, % 57
28
Shear Modulus, GPa 79
40
Shear Strength, MPa 490
430 to 580
Tensile Strength: Ultimate (UTS), MPa 690
700 to 960
Tensile Strength: Yield (Proof), MPa 390
540 to 830

Thermal Properties

Latent Heat of Fusion, J/g 290
410
Maximum Temperature: Mechanical, °C 990
330
Melting Completion (Liquidus), °C 1420
1640
Melting Onset (Solidus), °C 1380
1590
Specific Heat Capacity, J/kg-K 480
550
Thermal Expansion, µm/m-K 17
9.1

Otherwise Unclassified Properties

Base Metal Price, % relative 17
37
Density, g/cm3 7.7
4.5
Embodied Carbon, kg CO2/kg material 3.6
36
Embodied Energy, MJ/kg 50
580
Embodied Water, L/kg 160
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 270
89 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 380
1380 to 3220
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 25
43 to 60
Strength to Weight: Bending, points 22
39 to 48
Thermal Shock Resistance, points 15
52 to 71

Alloy Composition

Aluminum (Al), % 0
2.5 to 3.5
Carbon (C), % 0 to 0.030
0 to 0.080
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
0
Nickel (Ni), % 5.0 to 7.0
0
Nitrogen (N), % 0.25 to 0.5
0 to 0.030
Oxygen (O), % 0
0 to 0.15
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 0.75
0
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
92.6 to 95.5
Vanadium (V), % 0
2.0 to 3.0
Residuals, % 0
0 to 0.4