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Nickel 725 vs. ACI-ASTM CF3M Steel

Nickel 725 belongs to the nickel alloys classification, while ACI-ASTM CF3M steel belongs to the iron alloys. They have 42% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is nickel 725 and the bottom bar is ACI-ASTM CF3M steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 34
55
Fatigue Strength, MPa 260
270
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 78
78
Tensile Strength: Ultimate (UTS), MPa 860
520
Tensile Strength: Yield (Proof), MPa 350
260

Thermal Properties

Latent Heat of Fusion, J/g 320
300
Maximum Temperature: Mechanical, °C 980
990
Melting Completion (Liquidus), °C 1340
1440
Melting Onset (Solidus), °C 1270
1430
Specific Heat Capacity, J/kg-K 440
470
Thermal Expansion, µm/m-K 13
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.5
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 1.6
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 75
19
Density, g/cm3 8.5
7.9
Embodied Carbon, kg CO2/kg material 13
3.8
Embodied Energy, MJ/kg 190
53
Embodied Water, L/kg 270
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
240
Resilience: Unit (Modulus of Resilience), kJ/m3 300
170
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 28
18
Strength to Weight: Bending, points 24
18
Thermal Shock Resistance, points 23
12

Alloy Composition

Aluminum (Al), % 0 to 0.35
0
Carbon (C), % 0 to 0.030
0 to 0.030
Chromium (Cr), % 19 to 22.5
17 to 21
Iron (Fe), % 2.3 to 15.3
59.9 to 72
Manganese (Mn), % 0 to 0.35
0 to 1.5
Molybdenum (Mo), % 7.0 to 9.5
2.0 to 3.0
Nickel (Ni), % 55 to 59
9.0 to 13
Niobium (Nb), % 2.8 to 4.0
0
Phosphorus (P), % 0 to 0.015
0 to 0.040
Silicon (Si), % 0 to 0.2
0 to 1.5
Sulfur (S), % 0 to 0.010
0 to 0.040
Titanium (Ti), % 1.0 to 1.7
0