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ACI-ASTM CD3MWCuN Steel vs. Nickel 686

ACI-ASTM CD3MWCuN steel belongs to the iron alloys classification, while nickel 686 belongs to the nickel alloys. They have a modest 36% of their average alloy composition in common, which, by itself, doesn't mean much. There are 29 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CD3MWCuN steel and the bottom bar is nickel 686.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
220
Elongation at Break, % 29
51
Fatigue Strength, MPa 370
410
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 80
77
Tensile Strength: Ultimate (UTS), MPa 790
780
Tensile Strength: Yield (Proof), MPa 500
350

Thermal Properties

Latent Heat of Fusion, J/g 300
320
Maximum Temperature: Mechanical, °C 1100
980
Melting Completion (Liquidus), °C 1460
1380
Melting Onset (Solidus), °C 1410
1340
Specific Heat Capacity, J/kg-K 470
420
Thermal Conductivity, W/m-K 16
9.8
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
1.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
1.4

Otherwise Unclassified Properties

Base Metal Price, % relative 22
70
Density, g/cm3 7.9
9.0
Embodied Carbon, kg CO2/kg material 4.2
12
Embodied Energy, MJ/kg 58
170
Embodied Water, L/kg 180
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
320
Resilience: Unit (Modulus of Resilience), kJ/m3 620
280
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
22
Strength to Weight: Axial, points 28
24
Strength to Weight: Bending, points 24
21
Thermal Diffusivity, mm2/s 4.2
2.6
Thermal Shock Resistance, points 22
21

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.010
Chromium (Cr), % 24 to 26
19 to 23
Copper (Cu), % 0.5 to 1.0
0
Iron (Fe), % 56.6 to 65.3
0 to 5.0
Manganese (Mn), % 0 to 1.5
0 to 0.75
Molybdenum (Mo), % 3.0 to 4.0
15 to 17
Nickel (Ni), % 6.5 to 8.5
49.5 to 63
Nitrogen (N), % 0.2 to 0.3
0
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 0.080
Sulfur (S), % 0 to 0.025
0 to 0.020
Titanium (Ti), % 0
0.020 to 0.25
Tungsten (W), % 0.5 to 1.0
3.0 to 4.4