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Grade 25 Titanium vs. EN 1.4618 Stainless Steel

Grade 25 titanium belongs to the titanium alloys classification, while EN 1.4618 stainless steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is grade 25 titanium and the bottom bar is EN 1.4618 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 11
51
Fatigue Strength, MPa 550
240 to 250
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 40
77
Shear Strength, MPa 600
480 to 500
Tensile Strength: Ultimate (UTS), MPa 1000
680 to 700
Tensile Strength: Yield (Proof), MPa 940
250 to 260

Thermal Properties

Latent Heat of Fusion, J/g 410
280
Maximum Temperature: Mechanical, °C 340
900
Melting Completion (Liquidus), °C 1610
1400
Melting Onset (Solidus), °C 1560
1360
Specific Heat Capacity, J/kg-K 560
480
Thermal Conductivity, W/m-K 7.1
15
Thermal Expansion, µm/m-K 9.6
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.0
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
2.7

Otherwise Unclassified Properties

Density, g/cm3 4.5
7.7
Embodied Carbon, kg CO2/kg material 43
2.7
Embodied Energy, MJ/kg 700
39
Embodied Water, L/kg 320
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
270 to 280
Resilience: Unit (Modulus of Resilience), kJ/m3 4220
160 to 170
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 62
24 to 25
Strength to Weight: Bending, points 50
22 to 23
Thermal Diffusivity, mm2/s 2.8
4.0
Thermal Shock Resistance, points 71
15 to 16

Alloy Composition

Aluminum (Al), % 5.5 to 6.8
0
Carbon (C), % 0 to 0.080
0 to 0.1
Chromium (Cr), % 0
16.5 to 18.5
Copper (Cu), % 0
1.0 to 2.5
Hydrogen (H), % 0 to 0.013
0
Iron (Fe), % 0 to 0.4
62.7 to 72.5
Manganese (Mn), % 0
5.5 to 9.5
Nickel (Ni), % 0.3 to 0.8
4.5 to 5.5
Nitrogen (N), % 0 to 0.050
0 to 0.15
Oxygen (O), % 0 to 0.2
0
Palladium (Pd), % 0.040 to 0.080
0
Phosphorus (P), % 0
0 to 0.070
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 86.7 to 90.6
0
Vanadium (V), % 3.5 to 4.5
0
Residuals, % 0 to 0.4
0