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Grade CX2MW Nickel vs. ACI-ASTM CF20 Steel

Grade CX2MW nickel belongs to the nickel alloys classification, while ACI-ASTM CF20 steel belongs to the iron alloys. They have a modest 34% 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 grade CX2MW nickel and the bottom bar is ACI-ASTM CF20 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
200
Elongation at Break, % 34
50
Fatigue Strength, MPa 260
240
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 84
77
Tensile Strength: Ultimate (UTS), MPa 620
530
Tensile Strength: Yield (Proof), MPa 350
250

Thermal Properties

Latent Heat of Fusion, J/g 330
300
Maximum Temperature: Mechanical, °C 980
970
Melting Completion (Liquidus), °C 1550
1420
Melting Onset (Solidus), °C 1490
1410
Specific Heat Capacity, J/kg-K 430
480
Thermal Conductivity, W/m-K 10
16
Thermal Expansion, µm/m-K 12
17

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 65
16
Density, g/cm3 8.9
7.8
Embodied Carbon, kg CO2/kg material 12
3.1
Embodied Energy, MJ/kg 170
44
Embodied Water, L/kg 290
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
220
Resilience: Unit (Modulus of Resilience), kJ/m3 290
160
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 19
19
Strength to Weight: Bending, points 18
19
Thermal Diffusivity, mm2/s 2.7
4.3
Thermal Shock Resistance, points 17
11

Alloy Composition

Carbon (C), % 0 to 0.020
0 to 0.2
Chromium (Cr), % 20 to 22.5
18 to 21
Iron (Fe), % 2.0 to 6.0
64.2 to 74
Manganese (Mn), % 0 to 1.0
0 to 1.5
Molybdenum (Mo), % 12.5 to 14.5
0
Nickel (Ni), % 51.3 to 63
8.0 to 11
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 0.8
0 to 2.0
Sulfur (S), % 0 to 0.025
0 to 0.040
Tungsten (W), % 2.5 to 3.5
0
Vanadium (V), % 0 to 0.35
0