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EN 1.4859 Stainless Steel vs. Grade 2 Titanium

EN 1.4859 stainless steel belongs to the iron alloys classification, while grade 2 titanium belongs to the titanium alloys. There are 30 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is EN 1.4859 stainless steel and the bottom bar is grade 2 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
150
Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 23
23
Fatigue Strength, MPa 140
250
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 76
38
Tensile Strength: Ultimate (UTS), MPa 490
420
Tensile Strength: Yield (Proof), MPa 210
360

Thermal Properties

Latent Heat of Fusion, J/g 310
420
Maximum Temperature: Mechanical, °C 1050
320
Melting Completion (Liquidus), °C 1410
1660
Melting Onset (Solidus), °C 1360
1610
Specific Heat Capacity, J/kg-K 470
540
Thermal Conductivity, W/m-K 13
22
Thermal Expansion, µm/m-K 16
9.0

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
3.6
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
7.2

Otherwise Unclassified Properties

Base Metal Price, % relative 36
37
Density, g/cm3 8.0
4.5
Embodied Carbon, kg CO2/kg material 6.2
31
Embodied Energy, MJ/kg 88
510
Embodied Water, L/kg 190
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 91
92
Resilience: Unit (Modulus of Resilience), kJ/m3 110
600
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
35
Strength to Weight: Axial, points 17
26
Strength to Weight: Bending, points 17
28
Thermal Diffusivity, mm2/s 3.4
8.9
Thermal Shock Resistance, points 11
32

Alloy Composition

Carbon (C), % 0.050 to 0.15
0 to 0.080
Chromium (Cr), % 19 to 21
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 40.3 to 49
0 to 0.3
Manganese (Mn), % 0 to 2.0
0
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 31 to 33
0
Niobium (Nb), % 0.5 to 1.5
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.25
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0.5 to 1.5
0
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
98.9 to 100
Residuals, % 0
0 to 0.4