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AISI 317 Stainless Steel vs. Grade 6 Titanium

AISI 317 stainless steel belongs to the iron alloys classification, while grade 6 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 AISI 317 stainless steel and the bottom bar is grade 6 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
100
Elongation at Break, % 35 to 55
11
Fatigue Strength, MPa 250 to 330
290
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 79
39
Shear Strength, MPa 420 to 470
530
Tensile Strength: Ultimate (UTS), MPa 580 to 710
890
Tensile Strength: Yield (Proof), MPa 250 to 420
840

Thermal Properties

Latent Heat of Fusion, J/g 290
410
Maximum Temperature: Mechanical, °C 590
310
Melting Completion (Liquidus), °C 1400
1580
Melting Onset (Solidus), °C 1380
1530
Specific Heat Capacity, J/kg-K 470
550
Thermal Conductivity, W/m-K 15
7.8
Thermal Expansion, µm/m-K 17
9.4

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
1.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 21
36
Density, g/cm3 7.9
4.5
Embodied Carbon, kg CO2/kg material 4.3
30
Embodied Energy, MJ/kg 59
480
Embodied Water, L/kg 160
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 210 to 260
92
Resilience: Unit (Modulus of Resilience), kJ/m3 150 to 430
3390
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 20 to 25
55
Strength to Weight: Bending, points 20 to 22
46
Thermal Diffusivity, mm2/s 4.1
3.2
Thermal Shock Resistance, points 12 to 15
65

Alloy Composition

Aluminum (Al), % 0
4.0 to 6.0
Carbon (C), % 0 to 0.080
0 to 0.080
Chromium (Cr), % 18 to 20
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 58 to 68
0 to 0.5
Manganese (Mn), % 0 to 2.0
0
Molybdenum (Mo), % 3.0 to 4.0
0
Nickel (Ni), % 11 to 15
0
Nitrogen (N), % 0 to 0.1
0 to 0.030
Oxygen (O), % 0
0 to 0.2
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 0.75
0
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
2.0 to 3.0
Titanium (Ti), % 0
89.8 to 94
Residuals, % 0
0 to 0.4