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AISI 317LN Stainless Steel vs. Grade 19 Titanium

AISI 317LN stainless steel belongs to the iron alloys classification, while grade 19 titanium belongs to the titanium alloys. There are 28 material properties with values for both materials. Properties with values for just one material (7, 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 19 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
120
Elongation at Break, % 45
5.6 to 17
Fatigue Strength, MPa 250
550 to 620
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 79
47
Shear Strength, MPa 430
550 to 750
Tensile Strength: Ultimate (UTS), MPa 620
890 to 1300
Tensile Strength: Yield (Proof), MPa 270
870 to 1170

Thermal Properties

Latent Heat of Fusion, J/g 290
400
Maximum Temperature: Mechanical, °C 1010
370
Melting Completion (Liquidus), °C 1450
1660
Melting Onset (Solidus), °C 1400
1600
Specific Heat Capacity, J/kg-K 470
520
Thermal Conductivity, W/m-K 14
6.2
Thermal Expansion, µm/m-K 16
9.1

Otherwise Unclassified Properties

Base Metal Price, % relative 21
45
Density, g/cm3 7.9
5.0
Embodied Carbon, kg CO2/kg material 4.3
47
Embodied Energy, MJ/kg 59
760
Embodied Water, L/kg 160
230

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
70 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 190
3040 to 5530
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
33
Strength to Weight: Axial, points 22
49 to 72
Strength to Weight: Bending, points 20
41 to 53
Thermal Diffusivity, mm2/s 3.9
2.4
Thermal Shock Resistance, points 14
57 to 83

Alloy Composition

Aluminum (Al), % 0
3.0 to 4.0
Carbon (C), % 0 to 0.030
0 to 0.050
Chromium (Cr), % 18 to 20
5.5 to 6.5
Hydrogen (H), % 0
0 to 0.020
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
3.5 to 4.5
Nickel (Ni), % 11 to 15
0
Nitrogen (N), % 0.1 to 0.22
0 to 0.030
Oxygen (O), % 0
0 to 0.12
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 0.75
0
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
71.1 to 77
Vanadium (V), % 0
7.5 to 8.5
Zirconium (Zr), % 0
3.5 to 4.5
Residuals, % 0
0 to 0.4