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ACI-ASTM CF16Fa Steel vs. Grade CX2M Nickel

ACI-ASTM CF16Fa steel belongs to the iron alloys classification, while grade CX2M nickel 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 27 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 CF16Fa steel and the bottom bar is grade CX2M nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
220
Elongation at Break, % 28
45
Fatigue Strength, MPa 170
260
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
84
Tensile Strength: Ultimate (UTS), MPa 540
550
Tensile Strength: Yield (Proof), MPa 230
310

Thermal Properties

Latent Heat of Fusion, J/g 300
330
Maximum Temperature: Mechanical, °C 980
990
Melting Completion (Liquidus), °C 1420
1500
Melting Onset (Solidus), °C 1370
1450
Specific Heat Capacity, J/kg-K 480
430
Thermal Conductivity, W/m-K 16
10
Thermal Expansion, µm/m-K 16
12

Otherwise Unclassified Properties

Base Metal Price, % relative 17
65
Density, g/cm3 7.8
8.7
Embodied Carbon, kg CO2/kg material 3.3
12
Embodied Energy, MJ/kg 47
160
Embodied Water, L/kg 150
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
210
Resilience: Unit (Modulus of Resilience), kJ/m3 140
220
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 19
18
Strength to Weight: Bending, points 19
17
Thermal Diffusivity, mm2/s 4.2
2.7
Thermal Shock Resistance, points 12
15

Alloy Composition

Carbon (C), % 0 to 0.16
0 to 0.020
Chromium (Cr), % 18 to 21
22 to 24
Iron (Fe), % 62.1 to 72.4
0 to 1.5
Manganese (Mn), % 0 to 1.5
0 to 1.0
Molybdenum (Mo), % 0.4 to 0.8
15 to 16.5
Nickel (Ni), % 9.0 to 12
56.4 to 63
Phosphorus (P), % 0 to 0.040
0 to 0.020
Silicon (Si), % 0 to 2.0
0 to 0.5
Sulfur (S), % 0.2 to 0.4
0 to 0.020