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AWS ERTi-2 vs. S46800 Stainless Steel

AWS ERTi-2 belongs to the titanium alloys classification, while S46800 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 S46800 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 20
25
Fatigue Strength, MPa 190
160
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 40
77
Tensile Strength: Ultimate (UTS), MPa 340
470
Tensile Strength: Yield (Proof), MPa 280
230

Thermal Properties

Latent Heat of Fusion, J/g 420
290
Maximum Temperature: Mechanical, °C 320
920
Melting Completion (Liquidus), °C 1670
1440
Melting Onset (Solidus), °C 1620
1400
Specific Heat Capacity, J/kg-K 540
480
Thermal Conductivity, W/m-K 21
23
Thermal Expansion, µm/m-K 8.7
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
2.8
Electrical Conductivity: Equal Weight (Specific), % IACS 7.1
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 37
12
Density, g/cm3 4.5
7.7
Embodied Carbon, kg CO2/kg material 31
2.6
Embodied Energy, MJ/kg 510
37
Embodied Water, L/kg 110
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 64
98
Resilience: Unit (Modulus of Resilience), kJ/m3 360
130
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 21
17
Strength to Weight: Bending, points 24
18
Thermal Diffusivity, mm2/s 8.7
6.1
Thermal Shock Resistance, points 27
16

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.030
Chromium (Cr), % 0
18 to 20
Hydrogen (H), % 0 to 0.0080
0
Iron (Fe), % 0 to 0.12
76.5 to 81.8
Manganese (Mn), % 0
0 to 1.0
Nickel (Ni), % 0
0 to 0.5
Niobium (Nb), % 0
0.1 to 0.6
Nitrogen (N), % 0 to 0.015
0 to 0.030
Oxygen (O), % 0.080 to 0.16
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 99.667 to 99.92
0.070 to 0.3