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AWS ERTi-2 vs. S32808 Stainless Steel

AWS ERTi-2 belongs to the titanium alloys classification, while S32808 stainless steel belongs to the iron alloys. There are 29 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 AWS ERTi-2 and the bottom bar is S32808 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
210
Elongation at Break, % 20
17
Fatigue Strength, MPa 190
350
Poisson's Ratio 0.32
0.27
Shear Modulus, GPa 40
81
Tensile Strength: Ultimate (UTS), MPa 340
780
Tensile Strength: Yield (Proof), MPa 280
570

Thermal Properties

Latent Heat of Fusion, J/g 420
300
Maximum Temperature: Mechanical, °C 320
1100
Melting Completion (Liquidus), °C 1670
1470
Melting Onset (Solidus), °C 1620
1420
Specific Heat Capacity, J/kg-K 540
480
Thermal Conductivity, W/m-K 21
14
Thermal Expansion, µm/m-K 8.7
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 7.1
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 37
24
Density, g/cm3 4.5
7.9
Embodied Carbon, kg CO2/kg material 31
4.0
Embodied Energy, MJ/kg 510
57
Embodied Water, L/kg 110
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 64
120
Resilience: Unit (Modulus of Resilience), kJ/m3 360
790
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 21
27
Strength to Weight: Bending, points 24
24
Thermal Diffusivity, mm2/s 8.7
3.8
Thermal Shock Resistance, points 27
21

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.030
Chromium (Cr), % 0
27 to 27.9
Hydrogen (H), % 0 to 0.0080
0
Iron (Fe), % 0 to 0.12
58.1 to 62.8
Manganese (Mn), % 0
0 to 1.1
Molybdenum (Mo), % 0
0.8 to 1.2
Nickel (Ni), % 0
7.0 to 8.2
Nitrogen (N), % 0 to 0.015
0.3 to 0.4
Oxygen (O), % 0.080 to 0.16
0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
0 to 0.5
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 99.667 to 99.92
0
Tungsten (W), % 0
2.1 to 2.5