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ACI-ASTM CD4MCuN Steel vs. AWS ERTi-1

ACI-ASTM CD4MCuN steel belongs to the iron alloys classification, while AWS ERTi-1 belongs to the titanium 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 ACI-ASTM CD4MCuN steel and the bottom bar is AWS ERTi-1.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 18
24
Fatigue Strength, MPa 340
120
Poisson's Ratio 0.27
0.32
Shear Modulus, GPa 79
41
Tensile Strength: Ultimate (UTS), MPa 770
240
Tensile Strength: Yield (Proof), MPa 550
170

Thermal Properties

Latent Heat of Fusion, J/g 300
420
Maximum Temperature: Mechanical, °C 1100
320
Melting Completion (Liquidus), °C 1420
1670
Melting Onset (Solidus), °C 1380
1620
Specific Heat Capacity, J/kg-K 480
540
Thermal Conductivity, W/m-K 17
21
Thermal Expansion, µm/m-K 13
8.7

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
3.6
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
7.1

Otherwise Unclassified Properties

Base Metal Price, % relative 18
37
Density, g/cm3 7.8
4.5
Embodied Carbon, kg CO2/kg material 3.5
31
Embodied Energy, MJ/kg 49
510
Embodied Water, L/kg 180
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
52
Resilience: Unit (Modulus of Resilience), kJ/m3 760
140
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 28
15
Strength to Weight: Bending, points 24
19
Thermal Diffusivity, mm2/s 4.5
8.7
Thermal Shock Resistance, points 21
19

Alloy Composition

Carbon (C), % 0 to 0.040
0 to 0.030
Chromium (Cr), % 24.5 to 26.5
0
Copper (Cu), % 2.7 to 3.3
0
Hydrogen (H), % 0
0 to 0.0050
Iron (Fe), % 59.5 to 66.3
0 to 0.080
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 1.7 to 2.3
0
Nickel (Ni), % 4.7 to 6.0
0
Nitrogen (N), % 0.1 to 0.25
0 to 0.012
Oxygen (O), % 0
0.030 to 0.1
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.040
0
Titanium (Ti), % 0
99.773 to 99.97