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Grade 27 Titanium vs. EN 1.4646 Stainless Steel

Grade 27 titanium belongs to the titanium alloys classification, while EN 1.4646 stainless steel belongs to the iron alloys. There are 26 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is grade 27 titanium and the bottom bar is EN 1.4646 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 27
34
Fatigue Strength, MPa 170
340
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 41
77
Shear Strength, MPa 180
500
Tensile Strength: Ultimate (UTS), MPa 270
750
Tensile Strength: Yield (Proof), MPa 230
430

Thermal Properties

Latent Heat of Fusion, J/g 420
290
Maximum Temperature: Mechanical, °C 320
910
Melting Completion (Liquidus), °C 1660
1390
Melting Onset (Solidus), °C 1610
1340
Specific Heat Capacity, J/kg-K 540
480
Thermal Expansion, µm/m-K 8.7
17

Otherwise Unclassified Properties

Base Metal Price, % relative 37
13
Density, g/cm3 4.5
7.7
Embodied Carbon, kg CO2/kg material 33
2.8
Embodied Energy, MJ/kg 530
41
Embodied Water, L/kg 320
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 70
220
Resilience: Unit (Modulus of Resilience), kJ/m3 240
460
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 17
27
Strength to Weight: Bending, points 21
24
Thermal Shock Resistance, points 21
16

Alloy Composition

Carbon (C), % 0 to 0.080
0.020 to 0.1
Chromium (Cr), % 0
17 to 19
Copper (Cu), % 0
1.5 to 3.0
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.2
59 to 67.3
Manganese (Mn), % 0
10.5 to 12.5
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0
3.5 to 4.5
Nitrogen (N), % 0 to 0.030
0.2 to 0.3
Oxygen (O), % 0 to 0.18
0
Phosphorus (P), % 0
0 to 0.050
Ruthenium (Ru), % 0.080 to 0.14
0
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 99 to 99.92
0
Residuals, % 0 to 0.4
0