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ACI-ASTM CF20 Steel vs. N07716 Nickel

ACI-ASTM CF20 steel belongs to the iron alloys classification, while N07716 nickel belongs to the nickel alloys. They have a modest 35% 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 (5, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CF20 steel and the bottom bar is N07716 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 50
34
Fatigue Strength, MPa 240
690
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
78
Tensile Strength: Ultimate (UTS), MPa 530
860
Tensile Strength: Yield (Proof), MPa 250
350

Thermal Properties

Latent Heat of Fusion, J/g 300
320
Maximum Temperature: Mechanical, °C 970
980
Melting Completion (Liquidus), °C 1420
1480
Melting Onset (Solidus), °C 1410
1430
Specific Heat Capacity, J/kg-K 480
440
Thermal Conductivity, W/m-K 16
11
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
1.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
1.5

Otherwise Unclassified Properties

Base Metal Price, % relative 16
75
Density, g/cm3 7.8
8.5
Embodied Carbon, kg CO2/kg material 3.1
13
Embodied Energy, MJ/kg 44
190
Embodied Water, L/kg 150
280

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
240
Resilience: Unit (Modulus of Resilience), kJ/m3 160
300
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 19
28
Strength to Weight: Bending, points 19
24
Thermal Diffusivity, mm2/s 4.3
2.8
Thermal Shock Resistance, points 11
24

Alloy Composition

Aluminum (Al), % 0
0 to 0.35
Carbon (C), % 0 to 0.2
0 to 0.030
Chromium (Cr), % 18 to 21
19 to 22
Iron (Fe), % 64.2 to 74
0 to 11.3
Manganese (Mn), % 0 to 1.5
0 to 0.2
Molybdenum (Mo), % 0
7.0 to 9.5
Nickel (Ni), % 8.0 to 11
59 to 63
Niobium (Nb), % 0
2.8 to 4.0
Phosphorus (P), % 0 to 0.040
0 to 0.015
Silicon (Si), % 0 to 2.0
0 to 0.2
Sulfur (S), % 0 to 0.040
0 to 0.010
Titanium (Ti), % 0
1.0 to 1.6