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Nickel 617 vs. S44800 Stainless Steel

Nickel 617 belongs to the nickel alloys classification, while S44800 stainless steel belongs to the iron alloys. They have a modest 30% of their average alloy composition in common, which, by itself, doesn't mean much. There are 30 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 nickel 617 and the bottom bar is S44800 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
210
Elongation at Break, % 40
23
Fatigue Strength, MPa 220
300
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 80
82
Shear Strength, MPa 510
370
Tensile Strength: Ultimate (UTS), MPa 740
590
Tensile Strength: Yield (Proof), MPa 280
450

Thermal Properties

Latent Heat of Fusion, J/g 330
300
Maximum Temperature: Mechanical, °C 1010
1100
Melting Completion (Liquidus), °C 1380
1460
Melting Onset (Solidus), °C 1330
1410
Specific Heat Capacity, J/kg-K 450
480
Thermal Conductivity, W/m-K 13
17
Thermal Expansion, µm/m-K 12
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.4
2.6
Electrical Conductivity: Equal Weight (Specific), % IACS 1.5
3.0

Otherwise Unclassified Properties

Base Metal Price, % relative 75
19
Density, g/cm3 8.5
7.8
Embodied Carbon, kg CO2/kg material 10
3.8
Embodied Energy, MJ/kg 140
52
Embodied Water, L/kg 350
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 230
120
Resilience: Unit (Modulus of Resilience), kJ/m3 190
480
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 24
21
Strength to Weight: Bending, points 21
20
Thermal Diffusivity, mm2/s 3.5
4.6
Thermal Shock Resistance, points 21
19

Alloy Composition

Aluminum (Al), % 0.8 to 1.5
0
Boron (B), % 0 to 0.0060
0
Carbon (C), % 0.050 to 0.15
0 to 0.010
Chromium (Cr), % 20 to 24
28 to 30
Cobalt (Co), % 10 to 15
0
Copper (Cu), % 0 to 0.5
0 to 0.15
Iron (Fe), % 0 to 3.0
62.6 to 66.5
Manganese (Mn), % 0 to 1.0
0 to 0.3
Molybdenum (Mo), % 8.0 to 10
3.5 to 4.2
Nickel (Ni), % 44.5 to 62
2.0 to 2.5
Nitrogen (N), % 0
0 to 0.020
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.2
Sulfur (S), % 0 to 0.015
0 to 0.020