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Grade 6 Titanium vs. AISI 446 Stainless Steel

Grade 6 titanium belongs to the titanium alloys classification, while AISI 446 stainless steel belongs to the iron alloys. There are 31 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 grade 6 titanium and the bottom bar is AISI 446 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
200
Elongation at Break, % 11
23
Fatigue Strength, MPa 290
200
Poisson's Ratio 0.32
0.27
Reduction in Area, % 27
50
Shear Modulus, GPa 39
79
Shear Strength, MPa 530
360
Tensile Strength: Ultimate (UTS), MPa 890
570
Tensile Strength: Yield (Proof), MPa 840
300

Thermal Properties

Latent Heat of Fusion, J/g 410
290
Maximum Temperature: Mechanical, °C 310
1180
Melting Completion (Liquidus), °C 1580
1510
Melting Onset (Solidus), °C 1530
1430
Specific Heat Capacity, J/kg-K 550
490
Thermal Conductivity, W/m-K 7.8
17
Thermal Expansion, µm/m-K 9.4
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.2
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 36
12
Density, g/cm3 4.5
7.7
Embodied Carbon, kg CO2/kg material 30
2.4
Embodied Energy, MJ/kg 480
35
Embodied Water, L/kg 190
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 92
110
Resilience: Unit (Modulus of Resilience), kJ/m3 3390
230
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 35
26
Strength to Weight: Axial, points 55
21
Strength to Weight: Bending, points 46
20
Thermal Diffusivity, mm2/s 3.2
4.6
Thermal Shock Resistance, points 65
19

Alloy Composition

Aluminum (Al), % 4.0 to 6.0
0
Carbon (C), % 0 to 0.080
0 to 0.2
Chromium (Cr), % 0
23 to 27
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.5
69.2 to 77
Manganese (Mn), % 0
0 to 1.5
Nickel (Ni), % 0
0 to 0.75
Nitrogen (N), % 0 to 0.030
0 to 0.25
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
Tin (Sn), % 2.0 to 3.0
0
Titanium (Ti), % 89.8 to 94
0
Residuals, % 0 to 0.4
0