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EN 1.4640 Stainless Steel vs. Grade 35 Titanium

EN 1.4640 stainless steel belongs to the iron alloys classification, while grade 35 titanium belongs to the titanium alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, 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 grade 35 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 51
5.6
Fatigue Strength, MPa 230 to 250
330
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 77
41
Shear Strength, MPa 440 to 460
580
Tensile Strength: Ultimate (UTS), MPa 620 to 650
1000
Tensile Strength: Yield (Proof), MPa 240 to 260
630

Thermal Properties

Latent Heat of Fusion, J/g 280
420
Maximum Temperature: Mechanical, °C 930
320
Melting Completion (Liquidus), °C 1420
1630
Melting Onset (Solidus), °C 1380
1580
Specific Heat Capacity, J/kg-K 480
550
Thermal Conductivity, W/m-K 15
7.4
Thermal Expansion, µm/m-K 16
9.3

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
1.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
2.2

Otherwise Unclassified Properties

Base Metal Price, % relative 14
37
Density, g/cm3 7.8
4.6
Embodied Carbon, kg CO2/kg material 2.8
33
Embodied Energy, MJ/kg 40
530
Embodied Water, L/kg 150
170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 250 to 260
49
Resilience: Unit (Modulus of Resilience), kJ/m3 150 to 170
1830
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 22 to 23
61
Strength to Weight: Bending, points 21
49
Thermal Diffusivity, mm2/s 4.0
3.0
Thermal Shock Resistance, points 14 to 15
70

Alloy Composition

Aluminum (Al), % 0
4.0 to 5.0
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 0.015
Iron (Fe), % 67.4 to 73.6
0.2 to 0.8
Manganese (Mn), % 1.5 to 4.0
0
Molybdenum (Mo), % 0
1.5 to 2.5
Nickel (Ni), % 5.5 to 6.9
0
Nitrogen (N), % 0.030 to 0.11
0 to 0.050
Oxygen (O), % 0
0 to 0.25
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 0.5
0.2 to 0.4
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0
88.4 to 93
Vanadium (V), % 0
1.1 to 2.1
Residuals, % 0
0 to 0.4