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AWS ERTi-2 vs. ACI-ASTM CA15 Steel

AWS ERTi-2 belongs to the titanium alloys classification, while ACI-ASTM CA15 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-2 and the bottom bar is ACI-ASTM CA15 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 20
21
Fatigue Strength, MPa 190
370
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 40
76
Tensile Strength: Ultimate (UTS), MPa 340
700
Tensile Strength: Yield (Proof), MPa 280
570

Thermal Properties

Latent Heat of Fusion, J/g 420
280
Maximum Temperature: Mechanical, °C 320
750
Melting Completion (Liquidus), °C 1670
1440
Melting Onset (Solidus), °C 1620
1500
Specific Heat Capacity, J/kg-K 540
480
Thermal Conductivity, W/m-K 21
25
Thermal Expansion, µm/m-K 8.7
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
3.0
Electrical Conductivity: Equal Weight (Specific), % IACS 7.1
3.5

Otherwise Unclassified Properties

Base Metal Price, % relative 37
7.5
Density, g/cm3 4.5
7.7
Embodied Carbon, kg CO2/kg material 31
2.0
Embodied Energy, MJ/kg 510
28
Embodied Water, L/kg 110
100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 64
140
Resilience: Unit (Modulus of Resilience), kJ/m3 360
820
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 21
25
Strength to Weight: Bending, points 24
23
Thermal Diffusivity, mm2/s 8.7
6.7
Thermal Shock Resistance, points 27
26

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.15
Chromium (Cr), % 0
11.5 to 14
Hydrogen (H), % 0 to 0.0080
0
Iron (Fe), % 0 to 0.12
81.8 to 88.5
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0
0 to 1.0
Nitrogen (N), % 0 to 0.015
0
Oxygen (O), % 0.080 to 0.16
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 1.5
Sulfur (S), % 0
0 to 0.040
Titanium (Ti), % 99.667 to 99.92
0