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Grade CX2MW Nickel vs. AISI 431 Stainless Steel

Grade CX2MW nickel belongs to the nickel alloys classification, while AISI 431 stainless steel belongs to the iron alloys. They have a modest 23% 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 grade CX2MW nickel and the bottom bar is AISI 431 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
200
Elongation at Break, % 34
15 to 17
Fatigue Strength, MPa 260
430 to 610
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 84
77
Tensile Strength: Ultimate (UTS), MPa 620
890 to 1380
Tensile Strength: Yield (Proof), MPa 350
710 to 1040

Thermal Properties

Latent Heat of Fusion, J/g 330
280
Maximum Temperature: Mechanical, °C 980
850
Melting Completion (Liquidus), °C 1550
1510
Melting Onset (Solidus), °C 1490
1450
Specific Heat Capacity, J/kg-K 430
480
Thermal Conductivity, W/m-K 10
26
Thermal Expansion, µm/m-K 12
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.5
2.6
Electrical Conductivity: Equal Weight (Specific), % IACS 1.5
3.0

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
140 to 180
Resilience: Unit (Modulus of Resilience), kJ/m3 290
1270 to 2770
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 19
32 to 50
Strength to Weight: Bending, points 18
27 to 36
Thermal Diffusivity, mm2/s 2.7
7.0
Thermal Shock Resistance, points 17
28 to 43

Alloy Composition

Carbon (C), % 0 to 0.020
0 to 0.2
Chromium (Cr), % 20 to 22.5
15 to 17
Iron (Fe), % 2.0 to 6.0
78.2 to 83.8
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 12.5 to 14.5
0
Nickel (Ni), % 51.3 to 63
1.3 to 2.5
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 0.030
Tungsten (W), % 2.5 to 3.5
0
Vanadium (V), % 0 to 0.35
0