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Annealed AISI 440A vs. Annealed Grade 5 Titanium

Annealed AISI 440A belongs to the iron alloys classification, while annealed grade 5 titanium belongs to the titanium alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is annealed AISI 440A and the bottom bar is annealed grade 5 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 20
11
Fatigue Strength, MPa 270
530
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 77
40
Shear Strength, MPa 450
600
Tensile Strength: Ultimate (UTS), MPa 730
1000
Tensile Strength: Yield (Proof), MPa 420
910

Thermal Properties

Latent Heat of Fusion, J/g 280
410
Maximum Temperature: Mechanical, °C 760
330
Melting Completion (Liquidus), °C 1480
1610
Melting Onset (Solidus), °C 1370
1650
Specific Heat Capacity, J/kg-K 480
560
Thermal Conductivity, W/m-K 23
6.8
Thermal Expansion, µm/m-K 10
8.9

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
1.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
36
Density, g/cm3 7.7
4.4
Embodied Carbon, kg CO2/kg material 2.2
38
Embodied Energy, MJ/kg 31
610
Embodied Water, L/kg 120
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
110
Resilience: Unit (Modulus of Resilience), kJ/m3 440
3980
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 26
62
Strength to Weight: Bending, points 23
50
Thermal Diffusivity, mm2/s 6.2
2.7
Thermal Shock Resistance, points 26
76

Alloy Composition

Aluminum (Al), % 0
5.5 to 6.8
Carbon (C), % 0.6 to 0.75
0 to 0.080
Chromium (Cr), % 16 to 18
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 78.4 to 83.4
0 to 0.4
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 0 to 0.75
0
Nitrogen (N), % 0
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 0.015
0
Titanium (Ti), % 0
87.4 to 91
Vanadium (V), % 0
3.5 to 4.5
Yttrium (Y), % 0
0 to 0.0050
Residuals, % 0
0 to 0.4