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Grade 33 Titanium vs. EN 1.4878 Stainless Steel

Grade 33 titanium belongs to the titanium alloys classification, while EN 1.4878 stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is grade 33 titanium and the bottom bar is EN 1.4878 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 23
45
Fatigue Strength, MPa 250
190
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 41
77
Shear Strength, MPa 240
430
Tensile Strength: Ultimate (UTS), MPa 390
610
Tensile Strength: Yield (Proof), MPa 350
210

Thermal Properties

Latent Heat of Fusion, J/g 420
290
Maximum Temperature: Mechanical, °C 320
850
Melting Completion (Liquidus), °C 1660
1430
Melting Onset (Solidus), °C 1610
1380
Specific Heat Capacity, J/kg-K 540
480
Thermal Conductivity, W/m-K 21
15
Thermal Expansion, µm/m-K 8.7
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.4
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 6.9
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 55
16
Density, g/cm3 4.5
7.8
Embodied Carbon, kg CO2/kg material 33
3.2
Embodied Energy, MJ/kg 530
46
Embodied Water, L/kg 200
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 86
210
Resilience: Unit (Modulus of Resilience), kJ/m3 590
120
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 24
22
Strength to Weight: Bending, points 26
20
Thermal Diffusivity, mm2/s 8.7
4.0
Thermal Shock Resistance, points 30
13

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.1
Chromium (Cr), % 0.1 to 0.2
17 to 19
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.3
65 to 74
Manganese (Mn), % 0
0 to 2.0
Nickel (Ni), % 0.35 to 0.55
9.0 to 12
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.25
0
Palladium (Pd), % 0.010 to 0.020
0
Phosphorus (P), % 0
0 to 0.045
Ruthenium (Ru), % 0.020 to 0.040
0
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 98.1 to 99.52
0 to 0.8
Residuals, % 0 to 0.4
0