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AWS ERTi-2 vs. EN 1.1118 Cast Steel

AWS ERTi-2 belongs to the titanium alloys classification, while EN 1.1118 cast steel belongs to the iron alloys.

For each property being compared, the top bar is AWS ERTi-2 and the bottom bar is EN 1.1118 cast steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 20
14 to 21
Fatigue Strength, MPa 190
320 to 400
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 40
73
Tensile Strength: Ultimate (UTS), MPa 340
700 to 750
Tensile Strength: Yield (Proof), MPa 280
460 to 630

Thermal Properties

Latent Heat of Fusion, J/g 420
250
Maximum Temperature: Mechanical, °C 320
400
Melting Completion (Liquidus), °C 1670
1460
Melting Onset (Solidus), °C 1620
1420
Specific Heat Capacity, J/kg-K 540
470
Thermal Conductivity, W/m-K 21
51
Thermal Expansion, µm/m-K 8.7
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 7.1
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 37
1.9
Density, g/cm3 4.5
7.8
Embodied Carbon, kg CO2/kg material 31
1.4
Embodied Energy, MJ/kg 510
19
Embodied Water, L/kg 110
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 64
97 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 360
550 to 1050
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
24
Strength to Weight: Axial, points 21
25 to 27
Strength to Weight: Bending, points 24
22 to 23
Thermal Diffusivity, mm2/s 8.7
14
Thermal Shock Resistance, points 27
22 to 24

Alloy Composition

Carbon (C), % 0 to 0.030
0.2 to 0.25
Hydrogen (H), % 0 to 0.0080
0
Iron (Fe), % 0 to 0.12
97.3 to 98.3
Manganese (Mn), % 0
1.5 to 1.8
Nitrogen (N), % 0 to 0.015
0
Oxygen (O), % 0.080 to 0.16
0
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0
0 to 0.6
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 99.667 to 99.92
0