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Grade CW12MW Nickel vs. SAE-AISI 4340 Steel

Grade CW12MW nickel belongs to the nickel alloys classification, while SAE-AISI 4340 steel belongs to the iron alloys. There are 25 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is grade CW12MW nickel and the bottom bar is SAE-AISI 4340 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
190
Elongation at Break, % 4.6
12 to 22
Fatigue Strength, MPa 130
330 to 740
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 85
73
Tensile Strength: Ultimate (UTS), MPa 560
690 to 1280
Tensile Strength: Yield (Proof), MPa 310
470 to 1150

Thermal Properties

Latent Heat of Fusion, J/g 320
250
Maximum Temperature: Mechanical, °C 960
430
Melting Completion (Liquidus), °C 1610
1460
Melting Onset (Solidus), °C 1560
1420
Specific Heat Capacity, J/kg-K 410
470
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 70
3.5
Density, g/cm3 9.1
7.8
Embodied Carbon, kg CO2/kg material 13
1.7
Embodied Energy, MJ/kg 180
22
Embodied Water, L/kg 280
53

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 22
79 to 170
Resilience: Unit (Modulus of Resilience), kJ/m3 220
590 to 3490
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 22
24
Strength to Weight: Axial, points 17
24 to 45
Strength to Weight: Bending, points 17
22 to 33
Thermal Shock Resistance, points 16
20 to 38

Alloy Composition

Carbon (C), % 0 to 0.12
0.38 to 0.43
Chromium (Cr), % 15.5 to 17.5
0.7 to 0.9
Iron (Fe), % 4.5 to 7.5
95.1 to 96.3
Manganese (Mn), % 0 to 1.0
0.6 to 0.8
Molybdenum (Mo), % 16 to 18
0.2 to 0.3
Nickel (Ni), % 49.2 to 60.1
1.7 to 2.0
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 1.0
0.15 to 0.35
Sulfur (S), % 0 to 0.030
0 to 0.040
Tungsten (W), % 3.8 to 5.3
0
Vanadium (V), % 0.2 to 0.4
0