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Grade 6 Titanium vs. EN 1.4887 Stainless Steel

Grade 6 titanium belongs to the titanium alloys classification, while EN 1.4887 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 6 titanium and the bottom bar is EN 1.4887 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
200
Elongation at Break, % 11
45
Fatigue Strength, MPa 290
280
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 39
76
Shear Strength, MPa 530
400
Tensile Strength: Ultimate (UTS), MPa 890
580
Tensile Strength: Yield (Proof), MPa 840
300

Thermal Properties

Latent Heat of Fusion, J/g 410
320
Maximum Temperature: Mechanical, °C 310
1100
Melting Completion (Liquidus), °C 1580
1390
Melting Onset (Solidus), °C 1530
1350
Specific Heat Capacity, J/kg-K 550
480
Thermal Conductivity, W/m-K 7.8
12
Thermal Expansion, µm/m-K 9.4
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.2
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 36
39
Density, g/cm3 4.5
8.0
Embodied Carbon, kg CO2/kg material 30
6.7
Embodied Energy, MJ/kg 480
96
Embodied Water, L/kg 190
210

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 92
220
Resilience: Unit (Modulus of Resilience), kJ/m3 3390
230
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
24
Strength to Weight: Axial, points 55
20
Strength to Weight: Bending, points 46
19
Thermal Diffusivity, mm2/s 3.2
3.2
Thermal Shock Resistance, points 65
14

Alloy Composition

Aluminum (Al), % 4.0 to 6.0
0
Carbon (C), % 0 to 0.080
0 to 0.15
Chromium (Cr), % 0
20 to 23
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.5
34.2 to 45
Manganese (Mn), % 0
0 to 2.0
Nickel (Ni), % 0
33 to 37
Niobium (Nb), % 0
1.0 to 1.5
Nitrogen (N), % 0 to 0.030
0 to 0.1
Oxygen (O), % 0 to 0.2
0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
1.0 to 2.0
Sulfur (S), % 0
0 to 0.015
Tin (Sn), % 2.0 to 3.0
0
Titanium (Ti), % 89.8 to 94
0
Residuals, % 0 to 0.4
0