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AISI 303 Stainless Steel vs. Titanium 6-7

AISI 303 stainless steel belongs to the iron alloys classification, while titanium 6-7 belongs to the titanium alloys. There are 26 material properties with values for both materials. Properties with values for just one material (9, 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 6-7.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
120
Elongation at Break, % 40 to 51
11
Fatigue Strength, MPa 230 to 360
530
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
45
Shear Strength, MPa 430 to 470
610
Tensile Strength: Ultimate (UTS), MPa 600 to 690
1020
Tensile Strength: Yield (Proof), MPa 230 to 420
900

Thermal Properties

Latent Heat of Fusion, J/g 290
410
Maximum Temperature: Mechanical, °C 930
300
Melting Completion (Liquidus), °C 1450
1700
Melting Onset (Solidus), °C 1400
1650
Specific Heat Capacity, J/kg-K 480
520
Thermal Expansion, µm/m-K 17
9.3

Otherwise Unclassified Properties

Base Metal Price, % relative 15
75
Density, g/cm3 7.8
5.1
Embodied Carbon, kg CO2/kg material 3.0
34
Embodied Energy, MJ/kg 42
540
Embodied Water, L/kg 140
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
110
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 440
3460
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
32
Strength to Weight: Axial, points 21 to 25
56
Strength to Weight: Bending, points 20 to 22
44
Thermal Shock Resistance, points 13 to 15
66

Alloy Composition

Aluminum (Al), % 0
5.5 to 6.5
Carbon (C), % 0 to 0.15
0 to 0.080
Chromium (Cr), % 17 to 19
0
Hydrogen (H), % 0
0 to 0.0090
Iron (Fe), % 67.3 to 74.9
0 to 0.25
Manganese (Mn), % 0 to 2.0
0
Molybdenum (Mo), % 0
6.5 to 7.5
Nickel (Ni), % 8.0 to 10
0
Niobium (Nb), % 0
6.5 to 7.5
Nitrogen (N), % 0
0 to 0.050
Oxygen (O), % 0
0 to 0.2
Phosphorus (P), % 0 to 0.2
0
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0.15 to 0.35
0
Tantalum (Ta), % 0
0 to 0.5
Titanium (Ti), % 0
84.9 to 88