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AISI 415 Stainless Steel vs. Grade 14 Titanium

AISI 415 stainless steel belongs to the iron alloys classification, while grade 14 titanium belongs to the titanium alloys. There are 31 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 AISI 415 stainless steel and the bottom bar is grade 14 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 17
23
Fatigue Strength, MPa 430
220
Poisson's Ratio 0.28
0.32
Reduction in Area, % 50
34
Shear Modulus, GPa 76
41
Shear Strength, MPa 550
290
Tensile Strength: Ultimate (UTS), MPa 900
460
Tensile Strength: Yield (Proof), MPa 700
310

Thermal Properties

Latent Heat of Fusion, J/g 270
420
Maximum Temperature: Mechanical, °C 780
320
Melting Completion (Liquidus), °C 1450
1660
Melting Onset (Solidus), °C 1400
1610
Specific Heat Capacity, J/kg-K 480
540
Thermal Conductivity, W/m-K 24
21
Thermal Expansion, µm/m-K 10
8.7

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.7
3.4
Electrical Conductivity: Equal Weight (Specific), % IACS 3.1
6.9

Otherwise Unclassified Properties

Base Metal Price, % relative 11
37
Density, g/cm3 7.8
4.5
Embodied Carbon, kg CO2/kg material 2.5
32
Embodied Energy, MJ/kg 35
520
Embodied Water, L/kg 110
210

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
93
Resilience: Unit (Modulus of Resilience), kJ/m3 1250
450
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 32
28
Strength to Weight: Bending, points 26
29
Thermal Diffusivity, mm2/s 6.4
8.5
Thermal Shock Resistance, points 33
35

Alloy Composition

Carbon (C), % 0 to 0.050
0 to 0.080
Chromium (Cr), % 11.5 to 14
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 77.8 to 84
0 to 0.3
Manganese (Mn), % 0.5 to 1.0
0
Molybdenum (Mo), % 0.5 to 1.0
0
Nickel (Ni), % 3.5 to 5.5
0.4 to 0.6
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.15
Phosphorus (P), % 0 to 0.030
0
Ruthenium (Ru), % 0
0.040 to 0.060
Silicon (Si), % 0 to 0.6
0
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
98.4 to 99.56
Residuals, % 0
0 to 0.4