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Grade CX2MW Nickel vs. AISI 440A Stainless Steel

Grade CX2MW nickel belongs to the nickel alloys classification, while AISI 440A stainless steel belongs to the iron alloys. They have a modest 22% of their average alloy composition in common, which, by itself, doesn't mean much. There are 28 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is grade CX2MW nickel and the bottom bar is AISI 440A stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
200
Elongation at Break, % 34
5.0 to 20
Fatigue Strength, MPa 260
270 to 790
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 84
77
Tensile Strength: Ultimate (UTS), MPa 620
730 to 1790
Tensile Strength: Yield (Proof), MPa 350
420 to 1650

Thermal Properties

Latent Heat of Fusion, J/g 330
280
Maximum Temperature: Mechanical, °C 980
760
Melting Completion (Liquidus), °C 1550
1480
Melting Onset (Solidus), °C 1490
1370
Specific Heat Capacity, J/kg-K 430
480
Thermal Conductivity, W/m-K 10
23
Thermal Expansion, µm/m-K 12
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.5
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 1.5
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 65
9.0
Density, g/cm3 8.9
7.7
Embodied Carbon, kg CO2/kg material 12
2.2
Embodied Energy, MJ/kg 170
31
Embodied Water, L/kg 290
120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
87 to 120
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 19
26 to 65
Strength to Weight: Bending, points 18
23 to 43
Thermal Diffusivity, mm2/s 2.7
6.2
Thermal Shock Resistance, points 17
26 to 65

Alloy Composition

Carbon (C), % 0 to 0.020
0.6 to 0.75
Chromium (Cr), % 20 to 22.5
16 to 18
Iron (Fe), % 2.0 to 6.0
78.4 to 83.4
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 12.5 to 14.5
0 to 0.75
Nickel (Ni), % 51.3 to 63
0
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 0.8
0 to 1.0
Sulfur (S), % 0 to 0.025
0 to 0.015
Tungsten (W), % 2.5 to 3.5
0
Vanadium (V), % 0 to 0.35
0