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EN 1.4109 Stainless Steel vs. Grade 9 Titanium

EN 1.4109 stainless steel belongs to the iron alloys classification, while grade 9 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 EN 1.4109 stainless steel and the bottom bar is grade 9 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 19
11 to 17
Fatigue Strength, MPa 270
330 to 480
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 76
40
Shear Strength, MPa 480
430 to 580
Tensile Strength: Ultimate (UTS), MPa 770
700 to 960
Tensile Strength: Yield (Proof), MPa 420
540 to 830

Thermal Properties

Latent Heat of Fusion, J/g 280
410
Maximum Temperature: Mechanical, °C 820
330
Melting Completion (Liquidus), °C 1440
1640
Melting Onset (Solidus), °C 1400
1590
Specific Heat Capacity, J/kg-K 480
550
Thermal Conductivity, W/m-K 30
8.1
Thermal Expansion, µm/m-K 10
9.1

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.7
1.4
Electrical Conductivity: Equal Weight (Specific), % IACS 3.1
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 8.5
37
Density, g/cm3 7.7
4.5
Embodied Carbon, kg CO2/kg material 2.2
36
Embodied Energy, MJ/kg 30
580
Embodied Water, L/kg 110
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
89 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 460
1380 to 3220
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 28
43 to 60
Strength to Weight: Bending, points 24
39 to 48
Thermal Diffusivity, mm2/s 8.1
3.3
Thermal Shock Resistance, points 28
52 to 71

Alloy Composition

Aluminum (Al), % 0
2.5 to 3.5
Carbon (C), % 0.6 to 0.75
0 to 0.080
Chromium (Cr), % 14 to 16
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 80.7 to 85
0 to 0.25
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 0.4 to 0.8
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.15
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 0.7
0
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0
92.6 to 95.5
Vanadium (V), % 0
2.0 to 3.0
Residuals, % 0
0 to 0.4