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Grade CW6MC Nickel vs. EN 1.4621 Stainless Steel

Grade CW6MC nickel belongs to the nickel alloys classification, while EN 1.4621 stainless steel belongs to the iron 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 (3, in this case) are not shown.

For each property being compared, the top bar is grade CW6MC nickel and the bottom bar is EN 1.4621 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 28
25
Fatigue Strength, MPa 210
190
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 79
78
Tensile Strength: Ultimate (UTS), MPa 540
500
Tensile Strength: Yield (Proof), MPa 310
270

Thermal Properties

Latent Heat of Fusion, J/g 330
290
Maximum Temperature: Mechanical, °C 980
970
Melting Completion (Liquidus), °C 1480
1440
Melting Onset (Solidus), °C 1430
1390
Specific Heat Capacity, J/kg-K 440
480
Thermal Conductivity, W/m-K 11
21
Thermal Expansion, µm/m-K 12
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.3
2.6
Electrical Conductivity: Equal Weight (Specific), % IACS 1.4
3.1

Otherwise Unclassified Properties

Base Metal Price, % relative 80
14
Density, g/cm3 8.6
7.7
Embodied Carbon, kg CO2/kg material 14
2.8
Embodied Energy, MJ/kg 200
41
Embodied Water, L/kg 290
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
110
Resilience: Unit (Modulus of Resilience), kJ/m3 240
190
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 18
18
Strength to Weight: Bending, points 17
18
Thermal Diffusivity, mm2/s 2.8
5.7
Thermal Shock Resistance, points 15
17

Alloy Composition

Carbon (C), % 0 to 0.060
0 to 0.030
Chromium (Cr), % 20 to 23
20 to 21.5
Copper (Cu), % 0
0.1 to 1.0
Iron (Fe), % 0 to 5.0
74.4 to 79.7
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 8.0 to 10
0
Nickel (Ni), % 55.4 to 68.9
0
Niobium (Nb), % 3.2 to 4.5
0.2 to 1.0
Nitrogen (N), % 0
0 to 0.030
Phosphorus (P), % 0 to 0.015
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015