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ACI-ASTM CC50 Steel vs. Nickel 725

ACI-ASTM CC50 steel belongs to the iron alloys classification, while nickel 725 belongs to the nickel alloys. They have a modest 32% of their average alloy composition in common, which, by itself, doesn't mean much. There are 22 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CC50 steel and the bottom bar is nickel 725.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 80
78
Tensile Strength: Ultimate (UTS), MPa 430
860

Thermal Properties

Latent Heat of Fusion, J/g 300
320
Maximum Temperature: Mechanical, °C 1100
980
Melting Completion (Liquidus), °C 1420
1340
Melting Onset (Solidus), °C 1370
1270
Specific Heat Capacity, J/kg-K 490
440
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
1.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
1.6

Otherwise Unclassified Properties

Base Metal Price, % relative 14
75
Density, g/cm3 7.6
8.5
Embodied Carbon, kg CO2/kg material 2.7
13
Embodied Energy, MJ/kg 39
190
Embodied Water, L/kg 170
270

Common Calculations

Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 26
23
Strength to Weight: Axial, points 16
28
Strength to Weight: Bending, points 17
24
Thermal Shock Resistance, points 14
23

Alloy Composition

Aluminum (Al), % 0
0 to 0.35
Carbon (C), % 0 to 0.5
0 to 0.030
Chromium (Cr), % 26 to 30
19 to 22.5
Iron (Fe), % 62.9 to 74
2.3 to 15.3
Manganese (Mn), % 0 to 1.0
0 to 0.35
Molybdenum (Mo), % 0
7.0 to 9.5
Nickel (Ni), % 0 to 4.0
55 to 59
Niobium (Nb), % 0
2.8 to 4.0
Phosphorus (P), % 0 to 0.040
0 to 0.015
Silicon (Si), % 0 to 1.5
0 to 0.2
Sulfur (S), % 0 to 0.040
0 to 0.010
Titanium (Ti), % 0
1.0 to 1.7