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AISI 309Cb Stainless Steel vs. Grade 24 Titanium

AISI 309Cb stainless steel belongs to the iron alloys classification, while grade 24 titanium belongs to the titanium alloys. There are 30 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 309Cb stainless steel and the bottom bar is grade 24 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 39
11
Fatigue Strength, MPa 200
550
Poisson's Ratio 0.28
0.32
Reduction in Area, % 46
28
Shear Modulus, GPa 78
40
Shear Strength, MPa 390
610
Tensile Strength: Ultimate (UTS), MPa 580
1010
Tensile Strength: Yield (Proof), MPa 230
940

Thermal Properties

Latent Heat of Fusion, J/g 300
410
Maximum Temperature: Mechanical, °C 1090
340
Melting Completion (Liquidus), °C 1420
1610
Melting Onset (Solidus), °C 1380
1560
Specific Heat Capacity, J/kg-K 480
560
Thermal Conductivity, W/m-K 15
7.1
Thermal Expansion, µm/m-K 16
9.6

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
1.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.0

Otherwise Unclassified Properties

Density, g/cm3 7.8
4.5
Embodied Carbon, kg CO2/kg material 4.1
43
Embodied Energy, MJ/kg 59
710
Embodied Water, L/kg 170
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
110
Resilience: Unit (Modulus of Resilience), kJ/m3 140
4160
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 20
63
Strength to Weight: Bending, points 20
50
Thermal Diffusivity, mm2/s 4.0
2.9
Thermal Shock Resistance, points 13
72

Alloy Composition

Aluminum (Al), % 0
5.5 to 6.8
Carbon (C), % 0 to 0.080
0 to 0.080
Chromium (Cr), % 22 to 24
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 56 to 66
0 to 0.4
Manganese (Mn), % 0 to 2.0
0
Nickel (Ni), % 12 to 16
0
Niobium (Nb), % 0 to 1.1
0
Nitrogen (N), % 0
0 to 0.050
Oxygen (O), % 0
0 to 0.2
Palladium (Pd), % 0
0.040 to 0.080
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 0.75
0
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
87.5 to 91
Vanadium (V), % 0
3.5 to 4.5
Residuals, % 0
0 to 0.4