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S45000 Stainless Steel vs. Nickel 686

S45000 stainless steel belongs to the iron alloys classification, while nickel 686 belongs to the nickel alloys. They have a modest 25% 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 S45000 stainless steel and the bottom bar is nickel 686.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
220
Elongation at Break, % 6.8 to 14
51
Fatigue Strength, MPa 330 to 650
410
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
77
Shear Strength, MPa 590 to 830
560
Tensile Strength: Ultimate (UTS), MPa 980 to 1410
780
Tensile Strength: Yield (Proof), MPa 580 to 1310
350

Thermal Properties

Latent Heat of Fusion, J/g 280
320
Maximum Temperature: Mechanical, °C 840
980
Melting Completion (Liquidus), °C 1440
1380
Melting Onset (Solidus), °C 1390
1340
Specific Heat Capacity, J/kg-K 480
420
Thermal Conductivity, W/m-K 17
9.8
Thermal Expansion, µm/m-K 11
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
1.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
1.4

Otherwise Unclassified Properties

Base Metal Price, % relative 13
70
Density, g/cm3 7.8
9.0
Embodied Carbon, kg CO2/kg material 2.8
12
Embodied Energy, MJ/kg 39
170
Embodied Water, L/kg 130
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 94 to 160
320
Resilience: Unit (Modulus of Resilience), kJ/m3 850 to 4400
280
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
22
Strength to Weight: Axial, points 35 to 50
24
Strength to Weight: Bending, points 28 to 36
21
Thermal Diffusivity, mm2/s 4.5
2.6
Thermal Shock Resistance, points 33 to 47
21

Alloy Composition

Carbon (C), % 0 to 0.050
0 to 0.010
Chromium (Cr), % 14 to 16
19 to 23
Copper (Cu), % 1.3 to 1.8
0
Iron (Fe), % 72.1 to 79.3
0 to 5.0
Manganese (Mn), % 0 to 1.0
0 to 0.75
Molybdenum (Mo), % 0.5 to 1.0
15 to 17
Nickel (Ni), % 5.0 to 7.0
49.5 to 63
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 0.080
Sulfur (S), % 0 to 0.030
0 to 0.020
Titanium (Ti), % 0
0.020 to 0.25
Tungsten (W), % 0
3.0 to 4.4