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AWS ERTi-5 vs. ACI-ASTM CD4MCu Steel

AWS ERTi-5 belongs to the titanium alloys classification, while ACI-ASTM CD4MCu steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is AWS ERTi-5 and the bottom bar is ACI-ASTM CD4MCu steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 10
18
Fatigue Strength, MPa 470
340
Poisson's Ratio 0.32
0.27
Shear Modulus, GPa 40
79
Tensile Strength: Ultimate (UTS), MPa 900
770
Tensile Strength: Yield (Proof), MPa 830
550

Thermal Properties

Latent Heat of Fusion, J/g 410
300
Maximum Temperature: Mechanical, °C 340
1100
Melting Completion (Liquidus), °C 1610
1430
Melting Onset (Solidus), °C 1560
1380
Specific Heat Capacity, J/kg-K 560
480
Thermal Conductivity, W/m-K 7.1
17
Thermal Expansion, µm/m-K 9.6
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.0
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 36
18
Density, g/cm3 4.4
7.8
Embodied Carbon, kg CO2/kg material 38
3.5
Embodied Energy, MJ/kg 610
49
Embodied Water, L/kg 200
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 87
130
Resilience: Unit (Modulus of Resilience), kJ/m3 3250
760
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 56
28
Strength to Weight: Bending, points 46
24
Thermal Diffusivity, mm2/s 2.9
4.5
Thermal Shock Resistance, points 63
21

Alloy Composition

Aluminum (Al), % 5.5 to 6.8
0
Carbon (C), % 0 to 0.050
0 to 0.040
Chromium (Cr), % 0
24.5 to 26.5
Copper (Cu), % 0
2.8 to 3.3
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.22
59.9 to 66.3
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
1.8 to 2.3
Nickel (Ni), % 0
4.8 to 6.0
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0.12 to 0.2
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.040
Titanium (Ti), % 88.2 to 90.9
0
Vanadium (V), % 3.5 to 4.5
0