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Nickel 686 vs. Grade 300 Maraging Steel

Nickel 686 belongs to the nickel alloys classification, while grade 300 maraging steel belongs to the iron alloys. They have a modest 26% of their average alloy composition in common, which, by itself, doesn't mean much. There are 23 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is nickel 686 and the bottom bar is grade 300 maraging steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
190
Elongation at Break, % 51
6.5 to 18
Poisson's Ratio 0.29
0.3
Shear Modulus, GPa 77
75
Shear Strength, MPa 560
640 to 1190
Tensile Strength: Ultimate (UTS), MPa 780
1030 to 2030
Tensile Strength: Yield (Proof), MPa 350
760 to 1990

Thermal Properties

Latent Heat of Fusion, J/g 320
270
Melting Completion (Liquidus), °C 1380
1480
Melting Onset (Solidus), °C 1340
1430
Specific Heat Capacity, J/kg-K 420
450
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Base Metal Price, % relative 70
34
Density, g/cm3 9.0
8.2
Embodied Carbon, kg CO2/kg material 12
5.1
Embodied Energy, MJ/kg 170
68
Embodied Water, L/kg 300
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 320
130 to 170
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 22
23
Strength to Weight: Axial, points 24
35 to 68
Strength to Weight: Bending, points 21
28 to 43
Thermal Shock Resistance, points 21
31 to 62

Alloy Composition

Aluminum (Al), % 0
0.050 to 0.15
Boron (B), % 0
0 to 0.0030
Calcium (Ca), % 0
0 to 0.050
Carbon (C), % 0 to 0.010
0 to 0.030
Chromium (Cr), % 19 to 23
0
Cobalt (Co), % 0
8.5 to 9.5
Iron (Fe), % 0 to 5.0
65 to 68.4
Manganese (Mn), % 0 to 0.75
0 to 0.1
Molybdenum (Mo), % 15 to 17
4.6 to 5.2
Nickel (Ni), % 49.5 to 63
18 to 19
Phosphorus (P), % 0 to 0.040
0 to 0.010
Silicon (Si), % 0 to 0.080
0 to 0.1
Sulfur (S), % 0 to 0.020
0 to 0.010
Titanium (Ti), % 0.020 to 0.25
0.5 to 0.8
Tungsten (W), % 3.0 to 4.4
0
Zirconium (Zr), % 0
0 to 0.020