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EN 1.4125 Stainless Steel vs. Titanium 6-7

EN 1.4125 stainless steel belongs to the iron alloys classification, while titanium 6-7 belongs to the titanium 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 EN 1.4125 stainless steel and the bottom bar is titanium 6-7.

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

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

Otherwise Unclassified Properties

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

Common Calculations

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

Alloy Composition

Aluminum (Al), % 0
5.5 to 6.5
Carbon (C), % 1.0 to 1.2
0 to 0.080
Chromium (Cr), % 16 to 18
0
Hydrogen (H), % 0
0 to 0.0090
Iron (Fe), % 78 to 82.7
0 to 0.25
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 0.4 to 0.8
6.5 to 7.5
Niobium (Nb), % 0
6.5 to 7.5
Nitrogen (N), % 0
0 to 0.050
Oxygen (O), % 0
0 to 0.2
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.015
0
Tantalum (Ta), % 0
0 to 0.5
Titanium (Ti), % 0
84.9 to 88