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EN 1.4640 Stainless Steel vs. Titanium 6-7

EN 1.4640 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 1.4640 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, % 51
11
Fatigue Strength, MPa 230 to 250
530
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
45
Shear Strength, MPa 440 to 460
610
Tensile Strength: Ultimate (UTS), MPa 620 to 650
1020
Tensile Strength: Yield (Proof), MPa 240 to 260
900

Thermal Properties

Latent Heat of Fusion, J/g 280
410
Maximum Temperature: Mechanical, °C 930
300
Melting Completion (Liquidus), °C 1420
1700
Melting Onset (Solidus), °C 1380
1650
Specific Heat Capacity, J/kg-K 480
520
Thermal Expansion, µm/m-K 16
9.3

Otherwise Unclassified Properties

Base Metal Price, % relative 14
75
Density, g/cm3 7.8
5.1
Embodied Carbon, kg CO2/kg material 2.8
34
Embodied Energy, MJ/kg 40
540
Embodied Water, L/kg 150
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 250 to 260
110
Resilience: Unit (Modulus of Resilience), kJ/m3 150 to 170
3460
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
32
Strength to Weight: Axial, points 22 to 23
56
Strength to Weight: Bending, points 21
44
Thermal Shock Resistance, points 14 to 15
66

Alloy Composition

Aluminum (Al), % 0
5.5 to 6.5
Carbon (C), % 0.030 to 0.080
0 to 0.080
Chromium (Cr), % 18 to 19
0
Copper (Cu), % 1.3 to 2.0
0
Hydrogen (H), % 0
0 to 0.0090
Iron (Fe), % 67.4 to 73.6
0 to 0.25
Manganese (Mn), % 1.5 to 4.0
0
Molybdenum (Mo), % 0
6.5 to 7.5
Nickel (Ni), % 5.5 to 6.9
0
Niobium (Nb), % 0
6.5 to 7.5
Nitrogen (N), % 0.030 to 0.11
0 to 0.050
Oxygen (O), % 0
0 to 0.2
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 0.5
0
Sulfur (S), % 0 to 0.015
0
Tantalum (Ta), % 0
0 to 0.5
Titanium (Ti), % 0
84.9 to 88