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EN 1.4308 Stainless Steel vs. Grade 2 Titanium

EN 1.4308 stainless steel belongs to the iron alloys classification, while grade 2 titanium belongs to the titanium alloys. There are 31 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 1.4308 stainless steel and the bottom bar is grade 2 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
150
Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 34
23
Fatigue Strength, MPa 160
250
Impact Strength: V-Notched Charpy, J 67
160
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 77
38
Tensile Strength: Ultimate (UTS), MPa 510
420
Tensile Strength: Yield (Proof), MPa 200
360

Thermal Properties

Latent Heat of Fusion, J/g 290
420
Maximum Temperature: Mechanical, °C 960
320
Melting Completion (Liquidus), °C 1420
1660
Melting Onset (Solidus), °C 1380
1610
Specific Heat Capacity, J/kg-K 480
540
Thermal Conductivity, W/m-K 15
22
Thermal Expansion, µm/m-K 17
9.0

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
3.6
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
7.2

Otherwise Unclassified Properties

Base Metal Price, % relative 15
37
Density, g/cm3 7.8
4.5
Embodied Carbon, kg CO2/kg material 3.0
31
Embodied Energy, MJ/kg 43
510
Embodied Water, L/kg 150
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
92
Resilience: Unit (Modulus of Resilience), kJ/m3 100
600
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 18
26
Strength to Weight: Bending, points 18
28
Thermal Diffusivity, mm2/s 4.1
8.9
Thermal Shock Resistance, points 11
32

Alloy Composition


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Carbon (C), % 0 to 0.070
0 to 0.080
Chromium (Cr), % 18 to 20
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 65.9 to 74
0 to 0.3
Manganese (Mn), % 0 to 1.5
0
Nickel (Ni), % 8.0 to 11
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.25
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.5
0
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
98.9 to 100
Residuals, % 0
0 to 0.4