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AISI 303 Stainless Steel vs. Titanium 15-3-3-3

AISI 303 stainless steel belongs to the iron alloys classification, while titanium 15-3-3-3 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 AISI 303 stainless steel and the bottom bar is titanium 15-3-3-3.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
100
Elongation at Break, % 40 to 51
5.7 to 8.0
Fatigue Strength, MPa 230 to 360
610 to 710
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
39
Shear Strength, MPa 430 to 470
660 to 810
Tensile Strength: Ultimate (UTS), MPa 600 to 690
1120 to 1390
Tensile Strength: Yield (Proof), MPa 230 to 420
1100 to 1340

Thermal Properties

Latent Heat of Fusion, J/g 290
390
Maximum Temperature: Mechanical, °C 930
430
Melting Completion (Liquidus), °C 1450
1620
Melting Onset (Solidus), °C 1400
1560
Specific Heat Capacity, J/kg-K 480
520
Thermal Conductivity, W/m-K 16
8.1
Thermal Expansion, µm/m-K 17
9.8

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
1.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.8
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 15
40
Density, g/cm3 7.8
4.8
Embodied Carbon, kg CO2/kg material 3.0
59
Embodied Energy, MJ/kg 42
950
Embodied Water, L/kg 140
260

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
78 to 89
Stiffness to Weight: Axial, points 14
12
Stiffness to Weight: Bending, points 25
32
Strength to Weight: Axial, points 21 to 25
64 to 80
Strength to Weight: Bending, points 20 to 22
50 to 57
Thermal Diffusivity, mm2/s 4.4
3.2
Thermal Shock Resistance, points 13 to 15
79 to 98

Alloy Composition

Aluminum (Al), % 0
2.5 to 3.5
Carbon (C), % 0 to 0.15
0 to 0.050
Chromium (Cr), % 17 to 19
2.5 to 3.5
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 67.3 to 74.9
0 to 0.25
Manganese (Mn), % 0 to 2.0
0
Nickel (Ni), % 8.0 to 10
0
Nitrogen (N), % 0
0 to 0.050
Oxygen (O), % 0
0 to 0.13
Phosphorus (P), % 0 to 0.2
0
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0.15 to 0.35
0
Tin (Sn), % 0
2.5 to 3.5
Titanium (Ti), % 0
72.6 to 78.5
Vanadium (V), % 0
14 to 16
Residuals, % 0
0 to 0.4