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S40920 Stainless Steel vs. Titanium 6-7

S40920 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 S40920 stainless steel and the bottom bar is titanium 6-7.

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

Latent Heat of Fusion, J/g 270
410
Maximum Temperature: Mechanical, °C 710
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 10
9.3

Otherwise Unclassified Properties

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

Common Calculations

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

Alloy Composition

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