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EN 1.4659 Stainless Steel vs. Grade 2 Titanium

EN 1.4659 stainless steel belongs to the iron alloys classification, while grade 2 titanium belongs to the titanium alloys. There are 32 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is EN 1.4659 stainless steel and the bottom bar is grade 2 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 260
150
Elastic (Young's, Tensile) Modulus, GPa 210
110
Elongation at Break, % 49
23
Fatigue Strength, MPa 460
250
Impact Strength: V-Notched Charpy, J 94
160
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 81
38
Shear Strength, MPa 640
270
Tensile Strength: Ultimate (UTS), MPa 900
420
Tensile Strength: Yield (Proof), MPa 480
360

Thermal Properties

Latent Heat of Fusion, J/g 300
420
Maximum Temperature: Mechanical, °C 1100
320
Melting Completion (Liquidus), °C 1480
1660
Melting Onset (Solidus), °C 1430
1610
Specific Heat Capacity, J/kg-K 460
540
Thermal Conductivity, W/m-K 12
22
Thermal Expansion, µm/m-K 16
9.0

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
3.6
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
7.2

Otherwise Unclassified Properties

Base Metal Price, % relative 37
37
Density, g/cm3 8.2
4.5
Embodied Carbon, kg CO2/kg material 6.5
31
Embodied Energy, MJ/kg 89
510
Embodied Water, L/kg 220
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 370
92
Resilience: Unit (Modulus of Resilience), kJ/m3 550
600
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
35
Strength to Weight: Axial, points 31
26
Strength to Weight: Bending, points 25
28
Thermal Diffusivity, mm2/s 3.2
8.9
Thermal Shock Resistance, points 19
32

Alloy Composition

Carbon (C), % 0 to 0.020
0 to 0.080
Chromium (Cr), % 23 to 25
0
Copper (Cu), % 1.0 to 2.0
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 35.7 to 45.7
0 to 0.3
Manganese (Mn), % 2.0 to 4.0
0
Molybdenum (Mo), % 5.5 to 6.5
0
Nickel (Ni), % 21 to 23
0
Nitrogen (N), % 0.35 to 0.5
0 to 0.030
Oxygen (O), % 0
0 to 0.25
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 0.7
0
Sulfur (S), % 0 to 0.010
0
Titanium (Ti), % 0
98.9 to 100
Tungsten (W), % 1.5 to 2.5
0
Residuals, % 0
0 to 0.4