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ACI-ASTM CA6N Steel vs. Grade CW6MC Nickel

ACI-ASTM CA6N steel belongs to the iron alloys classification, while grade CW6MC nickel belongs to the nickel alloys. They have a modest 22% 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 ACI-ASTM CA6N steel and the bottom bar is grade CW6MC nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 17
28
Fatigue Strength, MPa 640
210
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
79
Tensile Strength: Ultimate (UTS), MPa 1080
540
Tensile Strength: Yield (Proof), MPa 1060
310

Thermal Properties

Latent Heat of Fusion, J/g 280
330
Maximum Temperature: Mechanical, °C 740
980
Melting Completion (Liquidus), °C 1440
1480
Melting Onset (Solidus), °C 1400
1430
Specific Heat Capacity, J/kg-K 480
440
Thermal Conductivity, W/m-K 23
11
Thermal Expansion, µm/m-K 9.9
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.6
1.3
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
1.4

Otherwise Unclassified Properties

Base Metal Price, % relative 11
80
Density, g/cm3 7.8
8.6
Embodied Carbon, kg CO2/kg material 2.5
14
Embodied Energy, MJ/kg 35
200
Embodied Water, L/kg 110
290

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
130
Resilience: Unit (Modulus of Resilience), kJ/m3 2900
240
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 38
18
Strength to Weight: Bending, points 30
17
Thermal Diffusivity, mm2/s 6.1
2.8
Thermal Shock Resistance, points 40
15

Alloy Composition

Carbon (C), % 0 to 0.060
0 to 0.060
Chromium (Cr), % 10.5 to 12.5
20 to 23
Iron (Fe), % 77.9 to 83.5
0 to 5.0
Manganese (Mn), % 0 to 0.5
0 to 1.0
Molybdenum (Mo), % 0
8.0 to 10
Nickel (Ni), % 6.0 to 8.0
55.4 to 68.9
Niobium (Nb), % 0
3.2 to 4.5
Phosphorus (P), % 0 to 0.020
0 to 0.015
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.020
0 to 0.030