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Grade 2 Titanium vs. EN 1.4449 Stainless Steel

Grade 2 titanium belongs to the titanium alloys classification, while EN 1.4449 stainless steel belongs to the iron 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 grade 2 titanium and the bottom bar is EN 1.4449 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
190
Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 23
48
Fatigue Strength, MPa 250
240
Impact Strength: V-Notched Charpy, J 160
91
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 38
78
Shear Strength, MPa 270
440
Tensile Strength: Ultimate (UTS), MPa 420
620
Tensile Strength: Yield (Proof), MPa 360
250

Thermal Properties

Latent Heat of Fusion, J/g 420
290
Maximum Temperature: Mechanical, °C 320
960
Melting Completion (Liquidus), °C 1660
1440
Melting Onset (Solidus), °C 1610
1400
Specific Heat Capacity, J/kg-K 540
470
Thermal Conductivity, W/m-K 22
15
Thermal Expansion, µm/m-K 9.0
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 7.2
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 37
19
Density, g/cm3 4.5
7.9
Embodied Carbon, kg CO2/kg material 31
3.9
Embodied Energy, MJ/kg 510
54
Embodied Water, L/kg 110
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 92
240
Resilience: Unit (Modulus of Resilience), kJ/m3 600
160
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 26
22
Strength to Weight: Bending, points 28
20
Thermal Diffusivity, mm2/s 8.9
4.0
Thermal Shock Resistance, points 32
14

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.035
Chromium (Cr), % 0
17 to 18.2
Copper (Cu), % 0
0 to 1.0
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.3
62.4 to 69.3
Manganese (Mn), % 0
0 to 2.0
Molybdenum (Mo), % 0
2.3 to 2.8
Nickel (Ni), % 0
11.5 to 12.5
Nitrogen (N), % 0 to 0.030
0 to 0.080
Oxygen (O), % 0 to 0.25
0
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 98.9 to 100
0
Residuals, % 0 to 0.4
0