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Grade 1 Titanium vs. EN 1.4446 Stainless Steel

Grade 1 titanium belongs to the titanium alloys classification, while EN 1.4446 stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is grade 1 titanium and the bottom bar is EN 1.4446 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 120
140
Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 28
23
Fatigue Strength, MPa 170
160
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 39
79
Tensile Strength: Ultimate (UTS), MPa 310
490
Tensile Strength: Yield (Proof), MPa 220
240

Thermal Properties

Latent Heat of Fusion, J/g 420
290
Maximum Temperature: Mechanical, °C 320
980
Melting Completion (Liquidus), °C 1660
1460
Melting Onset (Solidus), °C 1610
1410
Specific Heat Capacity, J/kg-K 540
470
Thermal Conductivity, W/m-K 20
14
Thermal Expansion, µm/m-K 8.8
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.7
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 7.3
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 37
22
Density, g/cm3 4.5
7.9
Embodied Carbon, kg CO2/kg material 31
4.5
Embodied Energy, MJ/kg 510
60
Embodied Water, L/kg 110
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 79
93
Resilience: Unit (Modulus of Resilience), kJ/m3 230
140
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 19
17
Strength to Weight: Bending, points 23
17
Thermal Diffusivity, mm2/s 8.2
3.6
Thermal Shock Resistance, points 24
11

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.030
Chromium (Cr), % 0
16.5 to 18.5
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.2
59.7 to 66.9
Manganese (Mn), % 0
0 to 1.5
Molybdenum (Mo), % 0
4.0 to 4.5
Nickel (Ni), % 0
12.5 to 14.5
Nitrogen (N), % 0 to 0.030
0.12 to 0.22
Oxygen (O), % 0 to 0.18
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 99.095 to 100
0
Residuals, % 0 to 0.4
0