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AISI 329 Stainless Steel vs. Grade CY40 Nickel

AISI 329 stainless steel belongs to the iron alloys classification, while grade CY40 nickel belongs to the nickel alloys. They have a modest 25% 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 AISI 329 stainless steel and the bottom bar is grade CY40 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 17
34
Fatigue Strength, MPa 330
160
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 80
74
Tensile Strength: Ultimate (UTS), MPa 710
540
Tensile Strength: Yield (Proof), MPa 540
220

Thermal Properties

Latent Heat of Fusion, J/g 300
330
Maximum Temperature: Mechanical, °C 1100
960
Melting Completion (Liquidus), °C 1440
1350
Melting Onset (Solidus), °C 1390
1300
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 16
14
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
1.8

Otherwise Unclassified Properties

Base Metal Price, % relative 16
55
Density, g/cm3 7.7
8.4
Embodied Carbon, kg CO2/kg material 3.1
9.1
Embodied Energy, MJ/kg 44
130
Embodied Water, L/kg 170
260

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
150
Resilience: Unit (Modulus of Resilience), kJ/m3 730
130
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 25
18
Strength to Weight: Bending, points 23
18
Thermal Diffusivity, mm2/s 4.3
3.7
Thermal Shock Resistance, points 19
16

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.4
Chromium (Cr), % 23 to 28
14 to 17
Iron (Fe), % 63.1 to 74
0 to 11
Manganese (Mn), % 0 to 1.0
0 to 1.5
Molybdenum (Mo), % 1.0 to 2.0
0
Nickel (Ni), % 2.0 to 5.0
67 to 86
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 0.75
0 to 3.0
Sulfur (S), % 0 to 0.030
0 to 0.030