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AWS ERTi-2 vs. S38100 Stainless Steel

AWS ERTi-2 belongs to the titanium alloys classification, while S38100 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 S38100 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 20
45
Fatigue Strength, MPa 190
210
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 40
76
Tensile Strength: Ultimate (UTS), MPa 340
580
Tensile Strength: Yield (Proof), MPa 280
230

Thermal Properties

Latent Heat of Fusion, J/g 420
320
Maximum Temperature: Mechanical, °C 320
970
Melting Completion (Liquidus), °C 1670
1400
Melting Onset (Solidus), °C 1620
1350
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
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 7.1
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 37
20
Density, g/cm3 4.5
7.8
Embodied Carbon, kg CO2/kg material 31
3.8
Embodied Energy, MJ/kg 510
54
Embodied Water, L/kg 110
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 64
210
Resilience: Unit (Modulus of Resilience), kJ/m3 360
140
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 21
21
Strength to Weight: Bending, points 24
20
Thermal Diffusivity, mm2/s 8.7
4.0
Thermal Shock Resistance, points 27
13

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.080
Chromium (Cr), % 0
17 to 19
Hydrogen (H), % 0 to 0.0080
0
Iron (Fe), % 0 to 0.12
57.9 to 64
Manganese (Mn), % 0
0 to 2.0
Nickel (Ni), % 0
17.5 to 18.5
Nitrogen (N), % 0 to 0.015
0
Oxygen (O), % 0.080 to 0.16
0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
1.5 to 2.5
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 99.667 to 99.92
0