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EN 1.4509 Stainless Steel vs. Grade 2 Titanium

EN 1.4509 stainless steel belongs to the iron alloys classification, while grade 2 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 EN 1.4509 stainless steel and the bottom bar is grade 2 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
150
Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 21
23
Fatigue Strength, MPa 170
250
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 77
38
Shear Strength, MPa 330
270
Tensile Strength: Ultimate (UTS), MPa 530
420
Tensile Strength: Yield (Proof), MPa 260
360

Thermal Properties

Latent Heat of Fusion, J/g 280
420
Maximum Temperature: Mechanical, °C 890
320
Melting Completion (Liquidus), °C 1440
1660
Melting Onset (Solidus), °C 1400
1610
Specific Heat Capacity, J/kg-K 480
540
Thermal Conductivity, W/m-K 25
22
Thermal Expansion, µm/m-K 10
9.0

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
3.6
Electrical Conductivity: Equal Weight (Specific), % IACS 3.4
7.2

Otherwise Unclassified Properties

Base Metal Price, % relative 13
37
Density, g/cm3 7.7
4.5
Embodied Carbon, kg CO2/kg material 2.8
31
Embodied Energy, MJ/kg 41
510
Embodied Water, L/kg 120
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 90
92
Resilience: Unit (Modulus of Resilience), kJ/m3 180
600
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 19
26
Strength to Weight: Bending, points 19
28
Thermal Diffusivity, mm2/s 6.8
8.9
Thermal Shock Resistance, points 19
32

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.080
Chromium (Cr), % 17.5 to 18.5
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 77.8 to 82.1
0 to 0.3
Manganese (Mn), % 0 to 1.0
0
Niobium (Nb), % 0.3 to 1.0
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.25
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0.1 to 0.6
98.9 to 100
Residuals, % 0
0 to 0.4