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AWS ERTi-5 vs. Austempered Cast Iron

AWS ERTi-5 belongs to the titanium alloys classification, while austempered cast iron belongs to the iron alloys. There are 25 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-5 and the bottom bar is austempered cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
180
Elongation at Break, % 10
1.1 to 13
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 40
62 to 69
Tensile Strength: Ultimate (UTS), MPa 900
860 to 1800
Tensile Strength: Yield (Proof), MPa 830
560 to 1460

Thermal Properties

Latent Heat of Fusion, J/g 410
280
Melting Completion (Liquidus), °C 1610
1380
Melting Onset (Solidus), °C 1560
1340
Specific Heat Capacity, J/kg-K 560
490
Thermal Conductivity, W/m-K 7.1
42
Thermal Expansion, µm/m-K 9.6
13

Otherwise Unclassified Properties

Base Metal Price, % relative 36
2.9
Density, g/cm3 4.4
7.5
Embodied Carbon, kg CO2/kg material 38
1.8
Embodied Energy, MJ/kg 610
25
Embodied Water, L/kg 200
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 87
19 to 95
Resilience: Unit (Modulus of Resilience), kJ/m3 3250
880 to 3970
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 56
32 to 66
Strength to Weight: Bending, points 46
27 to 44
Thermal Diffusivity, mm2/s 2.9
11
Thermal Shock Resistance, points 63
25 to 53

Alloy Composition

Aluminum (Al), % 5.5 to 6.8
0 to 0.050
Arsenic (As), % 0
0 to 0.020
Carbon (C), % 0 to 0.050
3.4 to 3.8
Chromium (Cr), % 0
0 to 0.1
Copper (Cu), % 0
0 to 0.8
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.22
89.6 to 94
Magnesium (Mg), % 0
0 to 0.040
Manganese (Mn), % 0
0.3 to 0.4
Molybdenum (Mo), % 0
0 to 0.3
Nickel (Ni), % 0
0 to 2.0
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0.12 to 0.2
0
Phosphorus (P), % 0
0 to 0.040
Selenium (Se), % 0
0 to 0.030
Silicon (Si), % 0
2.3 to 2.7
Sulfur (S), % 0
0 to 0.020
Tin (Sn), % 0
0 to 0.020
Titanium (Ti), % 88.2 to 90.9
0
Vanadium (V), % 3.5 to 4.5
0 to 0.1