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Titanium 6-7 vs. S40920 Stainless Steel

Titanium 6-7 belongs to the titanium alloys classification, while S40920 stainless steel belongs to the iron 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 titanium 6-7 and the bottom bar is S40920 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
190
Elongation at Break, % 11
22
Fatigue Strength, MPa 530
130
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 45
75
Shear Strength, MPa 610
270
Tensile Strength: Ultimate (UTS), MPa 1020
430
Tensile Strength: Yield (Proof), MPa 900
190

Thermal Properties

Latent Heat of Fusion, J/g 410
270
Maximum Temperature: Mechanical, °C 300
710
Melting Completion (Liquidus), °C 1700
1450
Melting Onset (Solidus), °C 1650
1400
Specific Heat Capacity, J/kg-K 520
480
Thermal Expansion, µm/m-K 9.3
10

Otherwise Unclassified Properties

Base Metal Price, % relative 75
6.5
Density, g/cm3 5.1
7.7
Embodied Carbon, kg CO2/kg material 34
2.0
Embodied Energy, MJ/kg 540
28
Embodied Water, L/kg 190
94

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
78
Resilience: Unit (Modulus of Resilience), kJ/m3 3460
97
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 32
25
Strength to Weight: Axial, points 56
15
Strength to Weight: Bending, points 44
16
Thermal Shock Resistance, points 66
15

Alloy Composition

Aluminum (Al), % 5.5 to 6.5
0
Carbon (C), % 0 to 0.080
0 to 0.030
Chromium (Cr), % 0
10.5 to 11.7
Hydrogen (H), % 0 to 0.0090
0
Iron (Fe), % 0 to 0.25
85.1 to 89.4
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 6.5 to 7.5
0
Nickel (Ni), % 0
0 to 0.5
Niobium (Nb), % 6.5 to 7.5
0 to 0.1
Nitrogen (N), % 0 to 0.050
0 to 0.030
Oxygen (O), % 0 to 0.2
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.020
Tantalum (Ta), % 0 to 0.5
0
Titanium (Ti), % 84.9 to 88
0.15 to 0.5