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AISI 309Cb Stainless Steel vs. Grade 6 Titanium

AISI 309Cb stainless steel belongs to the iron alloys classification, while grade 6 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 309Cb 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, % 39
11
Fatigue Strength, MPa 200
290
Poisson's Ratio 0.28
0.32
Reduction in Area, % 46
27
Shear Modulus, GPa 78
39
Shear Strength, MPa 390
530
Tensile Strength: Ultimate (UTS), MPa 580
890
Tensile Strength: Yield (Proof), MPa 230
840

Thermal Properties

Latent Heat of Fusion, J/g 300
410
Maximum Temperature: Mechanical, °C 1090
310
Melting Completion (Liquidus), °C 1420
1580
Melting Onset (Solidus), °C 1380
1530
Specific Heat Capacity, J/kg-K 480
550
Thermal Conductivity, W/m-K 15
7.8
Thermal Expansion, µm/m-K 16
9.4

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
1.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 23
36
Density, g/cm3 7.8
4.5
Embodied Carbon, kg CO2/kg material 4.1
30
Embodied Energy, MJ/kg 59
480
Embodied Water, L/kg 170
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
92
Resilience: Unit (Modulus of Resilience), kJ/m3 140
3390
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 20
55
Strength to Weight: Bending, points 20
46
Thermal Diffusivity, mm2/s 4.0
3.2
Thermal Shock Resistance, points 13
65

Alloy Composition

Aluminum (Al), % 0
4.0 to 6.0
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 0.5
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 0.030
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