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Grade 2 Titanium vs. EN 1.4959 Stainless Steel

Grade 2 titanium belongs to the titanium alloys classification, while EN 1.4959 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 1.4959 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 23
40
Fatigue Strength, MPa 250
170
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 38
77
Shear Strength, MPa 270
430
Tensile Strength: Ultimate (UTS), MPa 420
630
Tensile Strength: Yield (Proof), MPa 360
190

Thermal Properties

Latent Heat of Fusion, J/g 420
300
Maximum Temperature: Mechanical, °C 320
1090
Melting Completion (Liquidus), °C 1660
1400
Melting Onset (Solidus), °C 1610
1350
Specific Heat Capacity, J/kg-K 540
480
Thermal Conductivity, W/m-K 22
12
Thermal Expansion, µm/m-K 9.0
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 7.2
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 37
31
Density, g/cm3 4.5
8.0
Embodied Carbon, kg CO2/kg material 31
5.4
Embodied Energy, MJ/kg 510
76
Embodied Water, L/kg 110
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 92
190
Resilience: Unit (Modulus of Resilience), kJ/m3 600
96
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
24
Strength to Weight: Axial, points 26
22
Strength to Weight: Bending, points 28
20
Thermal Diffusivity, mm2/s 8.9
3.2
Thermal Shock Resistance, points 32
15

Alloy Composition

Aluminum (Al), % 0
0.25 to 0.65
Carbon (C), % 0 to 0.080
0.050 to 0.1
Chromium (Cr), % 0
19 to 22
Cobalt (Co), % 0
0 to 0.5
Copper (Cu), % 0
0 to 0.5
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.3
39.4 to 50.5
Manganese (Mn), % 0
0 to 1.5
Nickel (Ni), % 0
30 to 34
Nitrogen (N), % 0 to 0.030
0 to 0.030
Oxygen (O), % 0 to 0.25
0
Phosphorus (P), % 0
0 to 0.015
Silicon (Si), % 0
0 to 0.7
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 98.9 to 100
0.25 to 0.65
Residuals, % 0 to 0.4
0