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Grade CW12MW Nickel vs. SAE-AISI 81B45 Steel

Grade CW12MW nickel belongs to the nickel alloys classification, while SAE-AISI 81B45 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 81B45 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
190
Elongation at Break, % 4.6
12 to 24
Fatigue Strength, MPa 130
250 to 350
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 85
73
Tensile Strength: Ultimate (UTS), MPa 560
540 to 670
Tensile Strength: Yield (Proof), MPa 310
350 to 560

Thermal Properties

Latent Heat of Fusion, J/g 320
250
Maximum Temperature: Mechanical, °C 960
410
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
12

Otherwise Unclassified Properties

Base Metal Price, % relative 70
2.3
Density, g/cm3 9.1
7.8
Embodied Carbon, kg CO2/kg material 13
1.5
Embodied Energy, MJ/kg 180
20
Embodied Water, L/kg 280
49

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 22
77 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 220
320 to 840
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 22
24
Strength to Weight: Axial, points 17
19 to 24
Strength to Weight: Bending, points 17
19 to 22
Thermal Shock Resistance, points 16
17 to 21

Alloy Composition

Boron (B), % 0
0.00050 to 0.0030
Carbon (C), % 0 to 0.12
0.43 to 0.48
Chromium (Cr), % 15.5 to 17.5
0.35 to 0.55
Iron (Fe), % 4.5 to 7.5
97 to 98
Manganese (Mn), % 0 to 1.0
0.75 to 1.0
Molybdenum (Mo), % 16 to 18
0.080 to 0.15
Nickel (Ni), % 49.2 to 60.1
0.2 to 0.4
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