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AWS ERTi-12 vs. Grey Cast Iron

AWS ERTi-12 belongs to the titanium alloys classification, while grey cast iron belongs to the iron alloys. There are 28 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-12 and the bottom bar is grey cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
180
Elongation at Break, % 12
9.6
Fatigue Strength, MPa 200
69 to 170
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 41
69
Tensile Strength: Ultimate (UTS), MPa 480
160 to 450
Tensile Strength: Yield (Proof), MPa 340
98 to 290

Thermal Properties

Latent Heat of Fusion, J/g 420
280
Melting Completion (Liquidus), °C 1670
1380
Melting Onset (Solidus), °C 1620
1180
Specific Heat Capacity, J/kg-K 540
490
Thermal Conductivity, W/m-K 21
46
Thermal Expansion, µm/m-K 8.7
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 7.1
8.9

Otherwise Unclassified Properties

Base Metal Price, % relative 37
1.9
Density, g/cm3 4.5
7.5
Embodied Carbon, kg CO2/kg material 31
1.5
Embodied Energy, MJ/kg 510
21
Embodied Water, L/kg 110
44

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 52
13 to 37
Resilience: Unit (Modulus of Resilience), kJ/m3 550
27 to 240
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 30
5.8 to 17
Strength to Weight: Bending, points 30
8.7 to 17
Thermal Diffusivity, mm2/s 8.7
13
Thermal Shock Resistance, points 37
6.0 to 17

Alloy Composition

Carbon (C), % 0 to 0.030
3.1 to 3.4
Hydrogen (H), % 0 to 0.0080
0
Iron (Fe), % 0 to 0.15
92.1 to 93.9
Manganese (Mn), % 0
0.5 to 0.7
Molybdenum (Mo), % 0.2 to 0.4
0
Nickel (Ni), % 0.060 to 0.090
0
Nitrogen (N), % 0 to 0.015
0
Oxygen (O), % 0.080 to 0.16
0
Phosphorus (P), % 0
0 to 0.9
Silicon (Si), % 0
2.5 to 2.8
Sulfur (S), % 0
0 to 0.15
Titanium (Ti), % 99.147 to 99.66
0