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Grade 27 Titanium vs. EN 1.4568 Stainless Steel

Grade 27 titanium belongs to the titanium alloys classification, while EN 1.4568 stainless steel belongs to the iron alloys. There are 30 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 27 titanium and the bottom bar is EN 1.4568 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 27
2.3 to 21
Fatigue Strength, MPa 170
220 to 670
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 41
76
Shear Strength, MPa 180
520 to 930
Tensile Strength: Ultimate (UTS), MPa 270
830 to 1620
Tensile Strength: Yield (Proof), MPa 230
330 to 1490

Thermal Properties

Latent Heat of Fusion, J/g 420
280
Maximum Temperature: Mechanical, °C 320
890
Melting Completion (Liquidus), °C 1660
1420
Melting Onset (Solidus), °C 1610
1380
Specific Heat Capacity, J/kg-K 540
480
Thermal Conductivity, W/m-K 21
16
Thermal Expansion, µm/m-K 8.7
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 7.1
2.5

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
40
Embodied Water, L/kg 320
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 70
36 to 140
Resilience: Unit (Modulus of Resilience), kJ/m3 240
290 to 5710
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 17
30 to 58
Strength to Weight: Bending, points 21
25 to 40
Thermal Diffusivity, mm2/s 8.8
4.3
Thermal Shock Resistance, points 21
23 to 46

Alloy Composition

Aluminum (Al), % 0
0.7 to 1.5
Carbon (C), % 0 to 0.080
0 to 0.090
Chromium (Cr), % 0
16 to 18
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.2
70.9 to 76.8
Manganese (Mn), % 0
0 to 1.0
Nickel (Ni), % 0
6.5 to 7.8
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.18
0
Phosphorus (P), % 0
0 to 0.040
Ruthenium (Ru), % 0.080 to 0.14
0
Silicon (Si), % 0
0 to 0.7
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 99 to 99.92
0
Residuals, % 0 to 0.4
0