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AISI 418 Stainless Steel vs. Grade CX2M Nickel

AISI 418 stainless steel belongs to the iron alloys classification, while grade CX2M nickel belongs to the nickel alloys. There are 27 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is AISI 418 stainless 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, % 17
45
Fatigue Strength, MPa 520
260
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
84
Tensile Strength: Ultimate (UTS), MPa 1100
550
Tensile Strength: Yield (Proof), MPa 850
310

Thermal Properties

Latent Heat of Fusion, J/g 270
330
Maximum Temperature: Mechanical, °C 770
990
Melting Completion (Liquidus), °C 1500
1500
Melting Onset (Solidus), °C 1460
1450
Specific Heat Capacity, J/kg-K 470
430
Thermal Conductivity, W/m-K 25
10
Thermal Expansion, µm/m-K 10
12

Otherwise Unclassified Properties

Base Metal Price, % relative 15
65
Density, g/cm3 8.0
8.7
Embodied Carbon, kg CO2/kg material 2.9
12
Embodied Energy, MJ/kg 41
160
Embodied Water, L/kg 110
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
210
Resilience: Unit (Modulus of Resilience), kJ/m3 1830
220
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 38
18
Strength to Weight: Bending, points 29
17
Thermal Diffusivity, mm2/s 6.7
2.7
Thermal Shock Resistance, points 40
15

Alloy Composition

Carbon (C), % 0.15 to 0.2
0 to 0.020
Chromium (Cr), % 12 to 14
22 to 24
Iron (Fe), % 78.5 to 83.6
0 to 1.5
Manganese (Mn), % 0 to 0.5
0 to 1.0
Molybdenum (Mo), % 0 to 0.5
15 to 16.5
Nickel (Ni), % 1.8 to 2.2
56.4 to 63
Phosphorus (P), % 0 to 0.040
0 to 0.020
Silicon (Si), % 0 to 0.5
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.020
Tungsten (W), % 2.5 to 3.5
0