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EN 1.4658 Stainless Steel vs. Titanium 6-7

EN 1.4658 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 1.4658 stainless steel and the bottom bar is titanium 6-7.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
120
Elongation at Break, % 28
11
Fatigue Strength, MPa 530
530
Poisson's Ratio 0.27
0.33
Shear Modulus, GPa 81
45
Shear Strength, MPa 580
610
Tensile Strength: Ultimate (UTS), MPa 900
1020
Tensile Strength: Yield (Proof), MPa 730
900

Thermal Properties

Latent Heat of Fusion, J/g 300
410
Maximum Temperature: Mechanical, °C 1100
300
Melting Completion (Liquidus), °C 1450
1700
Melting Onset (Solidus), °C 1400
1650
Specific Heat Capacity, J/kg-K 470
520
Thermal Expansion, µm/m-K 13
9.3

Otherwise Unclassified Properties

Base Metal Price, % relative 25
75
Density, g/cm3 7.8
5.1
Embodied Carbon, kg CO2/kg material 4.5
34
Embodied Energy, MJ/kg 61
540
Embodied Water, L/kg 200
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
110
Resilience: Unit (Modulus of Resilience), kJ/m3 1280
3460
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 25
32
Strength to Weight: Axial, points 32
56
Strength to Weight: Bending, points 26
44
Thermal Shock Resistance, points 24
66

Alloy Composition

Aluminum (Al), % 0
5.5 to 6.5
Carbon (C), % 0 to 0.030
0 to 0.080
Chromium (Cr), % 26 to 29
0
Cobalt (Co), % 0.5 to 2.0
0
Copper (Cu), % 0 to 1.0
0
Hydrogen (H), % 0
0 to 0.0090
Iron (Fe), % 50.9 to 63.7
0 to 0.25
Manganese (Mn), % 0 to 1.5
0
Molybdenum (Mo), % 4.0 to 5.0
6.5 to 7.5
Nickel (Ni), % 5.5 to 9.5
0
Niobium (Nb), % 0
6.5 to 7.5
Nitrogen (N), % 0.3 to 0.5
0 to 0.050
Oxygen (O), % 0
0 to 0.2
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0 to 0.5
0
Sulfur (S), % 0 to 0.010
0
Tantalum (Ta), % 0
0 to 0.5
Titanium (Ti), % 0
84.9 to 88