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Nickel 684 vs. SAE-AISI M33 Steel

Nickel 684 belongs to the nickel alloys classification, while SAE-AISI M33 steel belongs to the iron alloys. There are 19 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is nickel 684 and the bottom bar is SAE-AISI M33 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 76
78
Tensile Strength: Ultimate (UTS), MPa 1190
810 to 2210

Thermal Properties

Latent Heat of Fusion, J/g 320
270
Melting Completion (Liquidus), °C 1370
1550
Melting Onset (Solidus), °C 1320
1500
Specific Heat Capacity, J/kg-K 470
440
Thermal Expansion, µm/m-K 13
12

Otherwise Unclassified Properties

Base Metal Price, % relative 75
32
Density, g/cm3 8.3
8.2
Embodied Carbon, kg CO2/kg material 10
7.7
Embodied Energy, MJ/kg 140
110
Embodied Water, L/kg 360
150

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 40
27 to 75
Strength to Weight: Bending, points 30
24 to 46
Thermal Shock Resistance, points 34
25 to 68

Alloy Composition

Aluminum (Al), % 2.5 to 3.3
0
Boron (B), % 0.0030 to 0.010
0
Carbon (C), % 0 to 0.15
0.85 to 0.92
Chromium (Cr), % 15 to 20
3.5 to 4.0
Cobalt (Co), % 13 to 20
7.8 to 8.8
Copper (Cu), % 0 to 0.15
0 to 0.25
Iron (Fe), % 0 to 4.0
71.4 to 76.3
Manganese (Mn), % 0 to 0.75
0.15 to 0.4
Molybdenum (Mo), % 3.0 to 5.0
9.0 to 10
Nickel (Ni), % 42.7 to 64
0 to 0.3
Phosphorus (P), % 0 to 0.015
0 to 0.030
Silicon (Si), % 0 to 0.75
0.15 to 0.5
Sulfur (S), % 0 to 0.015
0 to 0.030
Titanium (Ti), % 2.5 to 3.3
0
Tungsten (W), % 0
1.3 to 2.1
Vanadium (V), % 0
1.0 to 1.4