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EN 1.4729 Stainless Steel vs. Nickel 686

EN 1.4729 stainless steel belongs to the iron alloys classification, while nickel 686 belongs to the nickel alloys. There are 21 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 EN 1.4729 stainless steel and the bottom bar is nickel 686.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
220
Elongation at Break, % 15
51
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
77

Thermal Properties

Latent Heat of Fusion, J/g 300
320
Maximum Temperature: Mechanical, °C 850
980
Melting Completion (Liquidus), °C 1420
1380
Melting Onset (Solidus), °C 1380
1340
Specific Heat Capacity, J/kg-K 490
420
Thermal Conductivity, W/m-K 24
9.8
Thermal Expansion, µm/m-K 10
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.8
1.4
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
1.4

Otherwise Unclassified Properties

Base Metal Price, % relative 7.5
70
Density, g/cm3 7.6
9.0
Embodied Carbon, kg CO2/kg material 2.1
12
Embodied Energy, MJ/kg 29
170
Embodied Water, L/kg 100
300

Common Calculations

Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
22
Thermal Diffusivity, mm2/s 6.5
2.6

Alloy Composition

Carbon (C), % 0.3 to 0.5
0 to 0.010
Chromium (Cr), % 12 to 14
19 to 23
Iron (Fe), % 80.4 to 86.7
0 to 5.0
Manganese (Mn), % 0 to 1.0
0 to 0.75
Molybdenum (Mo), % 0 to 0.5
15 to 17
Nickel (Ni), % 0 to 1.0
49.5 to 63
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 1.0 to 2.5
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