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Titanium 6-7 vs. EN 1.4125 Stainless Steel

Titanium 6-7 belongs to the titanium alloys classification, while EN 1.4125 stainless steel belongs to the iron alloys. There are 26 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is titanium 6-7 and the bottom bar is EN 1.4125 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
200
Elongation at Break, % 11
19
Fatigue Strength, MPa 530
300
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 45
77
Shear Strength, MPa 610
500
Tensile Strength: Ultimate (UTS), MPa 1020
800
Tensile Strength: Yield (Proof), MPa 900
470

Thermal Properties

Latent Heat of Fusion, J/g 410
280
Maximum Temperature: Mechanical, °C 300
870
Melting Completion (Liquidus), °C 1700
1430
Melting Onset (Solidus), °C 1650
1390
Specific Heat Capacity, J/kg-K 520
480
Thermal Expansion, µm/m-K 9.3
10

Otherwise Unclassified Properties

Base Metal Price, % relative 75
9.0
Density, g/cm3 5.1
7.7
Embodied Carbon, kg CO2/kg material 34
2.3
Embodied Energy, MJ/kg 540
32
Embodied Water, L/kg 190
120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
130
Resilience: Unit (Modulus of Resilience), kJ/m3 3460
570
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 32
25
Strength to Weight: Axial, points 56
29
Strength to Weight: Bending, points 44
25
Thermal Shock Resistance, points 66
29

Alloy Composition

Aluminum (Al), % 5.5 to 6.5
0
Carbon (C), % 0 to 0.080
1.0 to 1.2
Chromium (Cr), % 0
16 to 18
Hydrogen (H), % 0 to 0.0090
0
Iron (Fe), % 0 to 0.25
78 to 82.7
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 6.5 to 7.5
0.4 to 0.8
Niobium (Nb), % 6.5 to 7.5
0
Nitrogen (N), % 0 to 0.050
0
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