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S20910 Stainless Steel vs. Grade 9 Titanium

S20910 stainless steel belongs to the iron alloys classification, while grade 9 titanium belongs to the titanium alloys. There are 29 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 S20910 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, % 14 to 39
11 to 17
Fatigue Strength, MPa 310 to 460
330 to 480
Poisson's Ratio 0.28
0.32
Reduction in Area, % 56 to 62
28
Shear Modulus, GPa 79
40
Shear Strength, MPa 500 to 570
430 to 580
Tensile Strength: Ultimate (UTS), MPa 780 to 940
700 to 960
Tensile Strength: Yield (Proof), MPa 430 to 810
540 to 830

Thermal Properties

Latent Heat of Fusion, J/g 300
410
Maximum Temperature: Mechanical, °C 1080
330
Melting Completion (Liquidus), °C 1420
1640
Melting Onset (Solidus), °C 1380
1590
Specific Heat Capacity, J/kg-K 480
550
Thermal Conductivity, W/m-K 13
8.1
Thermal Expansion, µm/m-K 16
9.1

Otherwise Unclassified Properties

Base Metal Price, % relative 22
37
Density, g/cm3 7.8
4.5
Embodied Carbon, kg CO2/kg material 4.8
36
Embodied Energy, MJ/kg 68
580
Embodied Water, L/kg 180
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 260
89 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 460 to 1640
1380 to 3220
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 28 to 33
43 to 60
Strength to Weight: Bending, points 24 to 27
39 to 48
Thermal Diffusivity, mm2/s 3.6
3.3
Thermal Shock Resistance, points 17 to 21
52 to 71

Alloy Composition

Aluminum (Al), % 0
2.5 to 3.5
Carbon (C), % 0 to 0.060
0 to 0.080
Chromium (Cr), % 20.5 to 23.5
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 52.1 to 62.1
0 to 0.25
Manganese (Mn), % 4.0 to 6.0
0
Molybdenum (Mo), % 1.5 to 3.0
0
Nickel (Ni), % 11.5 to 13.5
0
Niobium (Nb), % 0.1 to 0.3
0
Nitrogen (N), % 0.2 to 0.4
0 to 0.030
Oxygen (O), % 0
0 to 0.15
Phosphorus (P), % 0 to 0.040
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), % 0.1 to 0.3
2.0 to 3.0
Residuals, % 0
0 to 0.4

Comparable Variants