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Titanium 6-7 vs. EN 1.4578 Stainless Steel

Titanium 6-7 belongs to the titanium alloys classification, while EN 1.4578 stainless steel belongs to the iron alloys. There are 26 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is titanium 6-7 and the bottom bar is EN 1.4578 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
200
Elongation at Break, % 11
51
Fatigue Strength, MPa 530
200
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 45
77
Shear Strength, MPa 610
400
Tensile Strength: Ultimate (UTS), MPa 1020
550
Tensile Strength: Yield (Proof), MPa 900
200

Thermal Properties

Latent Heat of Fusion, J/g 410
290
Maximum Temperature: Mechanical, °C 300
930
Melting Completion (Liquidus), °C 1700
1430
Melting Onset (Solidus), °C 1650
1390
Specific Heat Capacity, J/kg-K 520
470
Thermal Expansion, µm/m-K 9.3
16

Otherwise Unclassified Properties

Base Metal Price, % relative 75
19
Density, g/cm3 5.1
7.9
Embodied Carbon, kg CO2/kg material 34
3.7
Embodied Energy, MJ/kg 540
51
Embodied Water, L/kg 190
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
220
Resilience: Unit (Modulus of Resilience), kJ/m3 3460
100
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 32
25
Strength to Weight: Axial, points 56
19
Strength to Weight: Bending, points 44
19
Thermal Shock Resistance, points 66
12

Alloy Composition

Aluminum (Al), % 5.5 to 6.5
0
Carbon (C), % 0 to 0.080
0 to 0.040
Chromium (Cr), % 0
16.5 to 17.5
Copper (Cu), % 0
3.0 to 3.5
Hydrogen (H), % 0 to 0.0090
0
Iron (Fe), % 0 to 0.25
62.3 to 68.5
Manganese (Mn), % 0
0 to 2.0
Molybdenum (Mo), % 6.5 to 7.5
2.0 to 2.5
Nickel (Ni), % 0
10 to 11
Niobium (Nb), % 6.5 to 7.5
0
Nitrogen (N), % 0 to 0.050
0 to 0.1
Oxygen (O), % 0 to 0.2
0
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.015
Tantalum (Ta), % 0 to 0.5
0
Titanium (Ti), % 84.9 to 88
0