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AISI 317LN Stainless Steel vs. Grade 2 Titanium

AISI 317LN stainless steel belongs to the iron alloys classification, while grade 2 titanium belongs to the titanium 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 AISI 317LN stainless steel and the bottom bar is grade 2 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
150
Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 45
23
Fatigue Strength, MPa 250
250
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 79
38
Shear Strength, MPa 430
270
Tensile Strength: Ultimate (UTS), MPa 620
420
Tensile Strength: Yield (Proof), MPa 270
360

Thermal Properties

Latent Heat of Fusion, J/g 290
420
Maximum Temperature: Mechanical, °C 1010
320
Melting Completion (Liquidus), °C 1450
1660
Melting Onset (Solidus), °C 1400
1610
Specific Heat Capacity, J/kg-K 470
540
Thermal Conductivity, W/m-K 14
22
Thermal Expansion, µm/m-K 16
9.0

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
3.6
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
7.2

Otherwise Unclassified Properties

Base Metal Price, % relative 21
37
Density, g/cm3 7.9
4.5
Embodied Carbon, kg CO2/kg material 4.3
31
Embodied Energy, MJ/kg 59
510
Embodied Water, L/kg 160
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
92
Resilience: Unit (Modulus of Resilience), kJ/m3 190
600
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 22
26
Strength to Weight: Bending, points 20
28
Thermal Diffusivity, mm2/s 3.9
8.9
Thermal Shock Resistance, points 14
32

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.080
Chromium (Cr), % 18 to 20
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 57.9 to 67.9
0 to 0.3
Manganese (Mn), % 0 to 2.0
0
Molybdenum (Mo), % 3.0 to 4.0
0
Nickel (Ni), % 11 to 15
0
Nitrogen (N), % 0.1 to 0.22
0 to 0.030
Oxygen (O), % 0
0 to 0.25
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 0.75
0
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
98.9 to 100
Residuals, % 0
0 to 0.4