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Austempered Cast Iron vs. Grade CW2M Nickel

Austempered cast iron belongs to the iron alloys classification, while grade CW2M nickel belongs to the nickel alloys. There are 23 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 austempered cast iron and the bottom bar is grade CW2M nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180
210
Elongation at Break, % 1.1 to 13
23
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 62 to 69
83
Tensile Strength: Ultimate (UTS), MPa 860 to 1800
560
Tensile Strength: Yield (Proof), MPa 560 to 1460
310

Thermal Properties

Latent Heat of Fusion, J/g 280
330
Melting Completion (Liquidus), °C 1380
1520
Melting Onset (Solidus), °C 1340
1460
Specific Heat Capacity, J/kg-K 490
430
Thermal Expansion, µm/m-K 13
12

Otherwise Unclassified Properties

Base Metal Price, % relative 2.9
70
Density, g/cm3 7.5
8.8
Embodied Carbon, kg CO2/kg material 1.8
12
Embodied Energy, MJ/kg 25
170
Embodied Water, L/kg 48
290

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 19 to 95
110
Resilience: Unit (Modulus of Resilience), kJ/m3 880 to 3970
220
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 32 to 66
18
Strength to Weight: Bending, points 27 to 44
17
Thermal Shock Resistance, points 25 to 53
16

Alloy Composition

Aluminum (Al), % 0 to 0.050
0
Arsenic (As), % 0 to 0.020
0
Carbon (C), % 3.4 to 3.8
0 to 0.020
Chromium (Cr), % 0 to 0.1
15 to 17.5
Copper (Cu), % 0 to 0.8
0
Iron (Fe), % 89.6 to 94
0 to 2.0
Magnesium (Mg), % 0 to 0.040
0
Manganese (Mn), % 0.3 to 0.4
0 to 1.0
Molybdenum (Mo), % 0 to 0.3
15 to 17.5
Nickel (Ni), % 0 to 2.0
60.1 to 70
Phosphorus (P), % 0 to 0.040
0 to 0.030
Selenium (Se), % 0 to 0.030
0
Silicon (Si), % 2.3 to 2.7
0 to 0.8
Sulfur (S), % 0 to 0.020
0 to 0.030
Tin (Sn), % 0 to 0.020
0
Tungsten (W), % 0
0 to 1.0
Vanadium (V), % 0 to 0.1
0