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EN 1.4655 Stainless Steel vs. Titanium 6-7

EN 1.4655 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 (7, in this case) are not shown.

For each property being compared, the top bar is EN 1.4655 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, % 23 to 25
11
Fatigue Strength, MPa 320
530
Poisson's Ratio 0.27
0.33
Shear Modulus, GPa 78
45
Shear Strength, MPa 460
610
Tensile Strength: Ultimate (UTS), MPa 720 to 730
1020
Tensile Strength: Yield (Proof), MPa 450 to 480
900

Thermal Properties

Latent Heat of Fusion, J/g 290
410
Maximum Temperature: Mechanical, °C 1050
300
Melting Completion (Liquidus), °C 1420
1700
Melting Onset (Solidus), °C 1370
1650
Specific Heat Capacity, J/kg-K 480
520
Thermal Expansion, µm/m-K 13
9.3

Otherwise Unclassified Properties

Base Metal Price, % relative 15
75
Density, g/cm3 7.7
5.1
Embodied Carbon, kg CO2/kg material 2.9
34
Embodied Energy, MJ/kg 41
540
Embodied Water, L/kg 160
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 150 to 160
110
Resilience: Unit (Modulus of Resilience), kJ/m3 510 to 580
3460
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
32
Strength to Weight: Axial, points 26
56
Strength to Weight: Bending, points 23
44
Thermal Shock Resistance, points 20
66

Alloy Composition

Aluminum (Al), % 0
5.5 to 6.5
Carbon (C), % 0 to 0.030
0 to 0.080
Chromium (Cr), % 22 to 24
0
Copper (Cu), % 1.0 to 3.0
0
Hydrogen (H), % 0
0 to 0.0090
Iron (Fe), % 63.6 to 73.4
0 to 0.25
Manganese (Mn), % 0 to 2.0
0
Molybdenum (Mo), % 0.1 to 0.6
6.5 to 7.5
Nickel (Ni), % 3.5 to 5.5
0
Niobium (Nb), % 0
6.5 to 7.5
Nitrogen (N), % 0.050 to 0.2
0 to 0.050
Oxygen (O), % 0
0 to 0.2
Phosphorus (P), % 0 to 0.035
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