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Titanium 6-7 vs. EN 1.4621 Stainless Steel

Titanium 6-7 belongs to the titanium alloys classification, while EN 1.4621 stainless steel belongs to the iron alloys. There are 26 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is titanium 6-7 and the bottom bar is EN 1.4621 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
200
Elongation at Break, % 11
25
Fatigue Strength, MPa 530
190
Poisson's Ratio 0.33
0.27
Shear Modulus, GPa 45
78
Shear Strength, MPa 610
320
Tensile Strength: Ultimate (UTS), MPa 1020
500
Tensile Strength: Yield (Proof), MPa 900
270

Thermal Properties

Latent Heat of Fusion, J/g 410
290
Maximum Temperature: Mechanical, °C 300
970
Melting Completion (Liquidus), °C 1700
1440
Melting Onset (Solidus), °C 1650
1390
Specific Heat Capacity, J/kg-K 520
480
Thermal Expansion, µm/m-K 9.3
11

Otherwise Unclassified Properties

Base Metal Price, % relative 75
14
Density, g/cm3 5.1
7.7
Embodied Carbon, kg CO2/kg material 34
2.8
Embodied Energy, MJ/kg 540
41
Embodied Water, L/kg 190
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
110
Resilience: Unit (Modulus of Resilience), kJ/m3 3460
190
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 32
25
Strength to Weight: Axial, points 56
18
Strength to Weight: Bending, points 44
18
Thermal Shock Resistance, points 66
17

Alloy Composition

Aluminum (Al), % 5.5 to 6.5
0
Carbon (C), % 0 to 0.080
0 to 0.030
Chromium (Cr), % 0
20 to 21.5
Copper (Cu), % 0
0.1 to 1.0
Hydrogen (H), % 0 to 0.0090
0
Iron (Fe), % 0 to 0.25
74.4 to 79.7
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 6.5 to 7.5
0
Niobium (Nb), % 6.5 to 7.5
0.2 to 1.0
Nitrogen (N), % 0 to 0.050
0 to 0.030
Oxygen (O), % 0 to 0.2
0
Phosphorus (P), % 0
0 to 0.040
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