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AISI 302 Stainless Steel vs. Nickel 686

AISI 302 stainless steel belongs to the iron alloys classification, while nickel 686 belongs to the nickel 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 (4, in this case) are not shown.

For each property being compared, the top bar is AISI 302 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, % 4.5 to 46
51
Fatigue Strength, MPa 210 to 520
410
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
77
Shear Strength, MPa 400 to 830
560
Tensile Strength: Ultimate (UTS), MPa 580 to 1430
780
Tensile Strength: Yield (Proof), MPa 230 to 1100
350

Thermal Properties

Latent Heat of Fusion, J/g 280
320
Maximum Temperature: Mechanical, °C 710
980
Melting Completion (Liquidus), °C 1420
1380
Melting Onset (Solidus), °C 1400
1340
Specific Heat Capacity, J/kg-K 480
420
Thermal Conductivity, W/m-K 16
9.8
Thermal Expansion, µm/m-K 17
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
1.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.8
1.4

Otherwise Unclassified Properties

Base Metal Price, % relative 15
70
Density, g/cm3 7.8
9.0
Embodied Carbon, kg CO2/kg material 3.0
12
Embodied Energy, MJ/kg 42
170
Embodied Water, L/kg 140
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 59 to 260
320
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 3070
280
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
22
Strength to Weight: Axial, points 21 to 51
24
Strength to Weight: Bending, points 20 to 36
21
Thermal Diffusivity, mm2/s 4.4
2.6
Thermal Shock Resistance, points 12 to 31
21

Alloy Composition

Carbon (C), % 0 to 0.15
0 to 0.010
Chromium (Cr), % 17 to 19
19 to 23
Iron (Fe), % 67.9 to 75
0 to 5.0
Manganese (Mn), % 0 to 2.0
0 to 0.75
Molybdenum (Mo), % 0
15 to 17
Nickel (Ni), % 8.0 to 10
49.5 to 63
Nitrogen (N), % 0 to 0.1
0
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 0.75
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