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AWS ERTi-1 vs. S33550 Stainless Steel

AWS ERTi-1 belongs to the titanium alloys classification, while S33550 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-1 and the bottom bar is S33550 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 24
40
Fatigue Strength, MPa 120
270
Poisson's Ratio 0.32
0.27
Shear Modulus, GPa 41
79
Tensile Strength: Ultimate (UTS), MPa 240
680
Tensile Strength: Yield (Proof), MPa 170
310

Thermal Properties

Latent Heat of Fusion, J/g 420
300
Maximum Temperature: Mechanical, °C 320
1100
Melting Completion (Liquidus), °C 1670
1400
Melting Onset (Solidus), °C 1620
1360
Specific Heat Capacity, J/kg-K 540
480
Thermal Conductivity, W/m-K 21
15
Thermal Expansion, µm/m-K 8.7
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 7.1
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 37
24
Density, g/cm3 4.5
7.8
Embodied Carbon, kg CO2/kg material 31
4.3
Embodied Energy, MJ/kg 510
61
Embodied Water, L/kg 110
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 52
220
Resilience: Unit (Modulus of Resilience), kJ/m3 140
250
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 15
24
Strength to Weight: Bending, points 19
22
Thermal Diffusivity, mm2/s 8.7
3.9
Thermal Shock Resistance, points 19
15

Alloy Composition

Carbon (C), % 0 to 0.030
0.040 to 0.1
Cerium (Ce), % 0
0.025 to 0.070
Chromium (Cr), % 0
25 to 28
Hydrogen (H), % 0 to 0.0050
0
Iron (Fe), % 0 to 0.080
48.8 to 58.2
Lanthanum (La), % 0
0.025 to 0.070
Manganese (Mn), % 0
0 to 1.5
Nickel (Ni), % 0
16.5 to 20
Niobium (Nb), % 0
0.050 to 0.15
Nitrogen (N), % 0 to 0.012
0.18 to 0.25
Oxygen (O), % 0.030 to 0.1
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 99.773 to 99.97
0