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Grade 2 Titanium vs. EN 1.4859 Stainless Steel

Grade 2 titanium belongs to the titanium alloys classification, while EN 1.4859 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 2 titanium and the bottom bar is EN 1.4859 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
140
Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 23
23
Fatigue Strength, MPa 250
140
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 38
76
Tensile Strength: Ultimate (UTS), MPa 420
490
Tensile Strength: Yield (Proof), MPa 360
210

Thermal Properties

Latent Heat of Fusion, J/g 420
310
Maximum Temperature: Mechanical, °C 320
1050
Melting Completion (Liquidus), °C 1660
1410
Melting Onset (Solidus), °C 1610
1360
Specific Heat Capacity, J/kg-K 540
470
Thermal Conductivity, W/m-K 22
13
Thermal Expansion, µm/m-K 9.0
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 7.2
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 37
36
Density, g/cm3 4.5
8.0
Embodied Carbon, kg CO2/kg material 31
6.2
Embodied Energy, MJ/kg 510
88
Embodied Water, L/kg 110
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 92
91
Resilience: Unit (Modulus of Resilience), kJ/m3 600
110
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
24
Strength to Weight: Axial, points 26
17
Strength to Weight: Bending, points 28
17
Thermal Diffusivity, mm2/s 8.9
3.4
Thermal Shock Resistance, points 32
11

Alloy Composition

Carbon (C), % 0 to 0.080
0.050 to 0.15
Chromium (Cr), % 0
19 to 21
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.3
40.3 to 49
Manganese (Mn), % 0
0 to 2.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0
31 to 33
Niobium (Nb), % 0
0.5 to 1.5
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.25
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0.5 to 1.5
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 98.9 to 100
0
Residuals, % 0 to 0.4
0