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AWS ERTi-1 vs. S31266 Stainless Steel

AWS ERTi-1 belongs to the titanium alloys classification, while S31266 stainless steel belongs to the iron alloys. There are 29 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 AWS ERTi-1 and the bottom bar is S31266 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
210
Elongation at Break, % 24
40
Fatigue Strength, MPa 120
400
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 41
81
Tensile Strength: Ultimate (UTS), MPa 240
860
Tensile Strength: Yield (Proof), MPa 170
470

Thermal Properties

Latent Heat of Fusion, J/g 420
310
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
460
Thermal Conductivity, W/m-K 21
12
Thermal Expansion, µm/m-K 8.7
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 7.1
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 37
37
Density, g/cm3 4.5
8.2
Embodied Carbon, kg CO2/kg material 31
6.5
Embodied Energy, MJ/kg 510
89
Embodied Water, L/kg 110
220

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 52
290
Resilience: Unit (Modulus of Resilience), kJ/m3 140
540
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
24
Strength to Weight: Axial, points 15
29
Strength to Weight: Bending, points 19
24
Thermal Diffusivity, mm2/s 8.7
3.1
Thermal Shock Resistance, points 19
18

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.030
Chromium (Cr), % 0
23 to 25
Copper (Cu), % 0
1.0 to 2.5
Hydrogen (H), % 0 to 0.0050
0
Iron (Fe), % 0 to 0.080
34.1 to 46
Manganese (Mn), % 0
2.0 to 4.0
Molybdenum (Mo), % 0
5.2 to 6.2
Nickel (Ni), % 0
21 to 24
Nitrogen (N), % 0 to 0.012
0.35 to 0.6
Oxygen (O), % 0.030 to 0.1
0
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.020
Titanium (Ti), % 99.773 to 99.97
0
Tungsten (W), % 0
1.5 to 2.5