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Titanium 6-7 vs. S17700 Stainless Steel

Titanium 6-7 belongs to the titanium alloys classification, while S17700 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 S17700 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
200
Elongation at Break, % 11
1.0 to 23
Fatigue Strength, MPa 530
290 to 560
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 45
76
Shear Strength, MPa 610
740 to 940
Tensile Strength: Ultimate (UTS), MPa 1020
1180 to 1650
Tensile Strength: Yield (Proof), MPa 900
430 to 1210

Thermal Properties

Latent Heat of Fusion, J/g 410
290
Maximum Temperature: Mechanical, °C 300
890
Melting Completion (Liquidus), °C 1700
1440
Melting Onset (Solidus), °C 1650
1400
Specific Heat Capacity, J/kg-K 520
480
Thermal Expansion, µm/m-K 9.3
11

Otherwise Unclassified Properties

Base Metal Price, % relative 75
13
Density, g/cm3 5.1
7.7
Embodied Carbon, kg CO2/kg material 34
2.8
Embodied Energy, MJ/kg 540
40
Embodied Water, L/kg 190
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
15 to 210
Resilience: Unit (Modulus of Resilience), kJ/m3 3460
460 to 3750
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 32
25
Strength to Weight: Axial, points 56
42 to 59
Strength to Weight: Bending, points 44
32 to 40
Thermal Shock Resistance, points 66
39 to 54

Alloy Composition

Aluminum (Al), % 5.5 to 6.5
0.75 to 1.5
Carbon (C), % 0 to 0.080
0 to 0.090
Chromium (Cr), % 0
16 to 18
Hydrogen (H), % 0 to 0.0090
0
Iron (Fe), % 0 to 0.25
70.5 to 76.8
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 6.5 to 7.5
0
Nickel (Ni), % 0
6.5 to 7.8
Niobium (Nb), % 6.5 to 7.5
0
Nitrogen (N), % 0 to 0.050
0
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 0.030
Tantalum (Ta), % 0 to 0.5
0
Titanium (Ti), % 84.9 to 88
0