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S33550 Stainless Steel vs. Nickel 684

S33550 stainless steel belongs to the iron alloys classification, while nickel 684 belongs to the nickel alloys. They have a modest 39% of their average alloy composition in common, which, by itself, doesn't mean much. There are 27 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is S33550 stainless steel and the bottom bar is nickel 684.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
310
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
11
Fatigue Strength, MPa 270
390
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 79
76
Shear Strength, MPa 470
710
Tensile Strength: Ultimate (UTS), MPa 680
1190
Tensile Strength: Yield (Proof), MPa 310
800

Thermal Properties

Latent Heat of Fusion, J/g 300
320
Maximum Temperature: Mechanical, °C 1100
1000
Melting Completion (Liquidus), °C 1400
1370
Melting Onset (Solidus), °C 1360
1320
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 16
13

Otherwise Unclassified Properties

Base Metal Price, % relative 24
75
Density, g/cm3 7.8
8.3
Embodied Carbon, kg CO2/kg material 4.3
10
Embodied Energy, MJ/kg 61
140
Embodied Water, L/kg 190
360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
120
Resilience: Unit (Modulus of Resilience), kJ/m3 250
1610
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 24
40
Strength to Weight: Bending, points 22
30
Thermal Shock Resistance, points 15
34

Alloy Composition

Aluminum (Al), % 0
2.5 to 3.3
Boron (B), % 0
0.0030 to 0.010
Carbon (C), % 0.040 to 0.1
0 to 0.15
Cerium (Ce), % 0.025 to 0.070
0
Chromium (Cr), % 25 to 28
15 to 20
Cobalt (Co), % 0
13 to 20
Copper (Cu), % 0
0 to 0.15
Iron (Fe), % 48.8 to 58.2
0 to 4.0
Lanthanum (La), % 0.025 to 0.070
0
Manganese (Mn), % 0 to 1.5
0 to 0.75
Molybdenum (Mo), % 0
3.0 to 5.0
Nickel (Ni), % 16.5 to 20
42.7 to 64
Niobium (Nb), % 0.050 to 0.15
0
Nitrogen (N), % 0.18 to 0.25
0
Phosphorus (P), % 0 to 0.040
0 to 0.015
Silicon (Si), % 0 to 1.0
0 to 0.75
Sulfur (S), % 0 to 0.030
0 to 0.015
Titanium (Ti), % 0
2.5 to 3.3