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Grade 350 Maraging Steel vs. Nickel 686

Grade 350 maraging steel belongs to the iron alloys classification, while nickel 686 belongs to the nickel 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 grade 350 maraging 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, % 4.1 to 18
51
Poisson's Ratio 0.3
0.29
Shear Modulus, GPa 75
77
Shear Strength, MPa 710 to 1400
560
Tensile Strength: Ultimate (UTS), MPa 1140 to 2420
780
Tensile Strength: Yield (Proof), MPa 830 to 2300
350

Thermal Properties

Latent Heat of Fusion, J/g 270
320
Melting Completion (Liquidus), °C 1470
1380
Melting Onset (Solidus), °C 1420
1340
Specific Heat Capacity, J/kg-K 450
420
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Base Metal Price, % relative 39
70
Density, g/cm3 8.2
9.0
Embodied Carbon, kg CO2/kg material 5.6
12
Embodied Energy, MJ/kg 74
170
Embodied Water, L/kg 160
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 98 to 190
320
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
22
Strength to Weight: Axial, points 38 to 82
24
Strength to Weight: Bending, points 29 to 49
21
Thermal Shock Resistance, points 35 to 74
21

Alloy Composition

Aluminum (Al), % 0.050 to 0.15
0
Boron (B), % 0 to 0.0030
0
Calcium (Ca), % 0 to 0.050
0
Carbon (C), % 0 to 0.030
0 to 0.010
Chromium (Cr), % 0
19 to 23
Cobalt (Co), % 11.5 to 12.5
0
Iron (Fe), % 61.2 to 64.6
0 to 5.0
Manganese (Mn), % 0 to 0.1
0 to 0.75
Molybdenum (Mo), % 4.6 to 5.2
15 to 17
Nickel (Ni), % 18 to 19
49.5 to 63
Phosphorus (P), % 0 to 0.010
0 to 0.040
Silicon (Si), % 0 to 0.1
0 to 0.080
Sulfur (S), % 0 to 0.010
0 to 0.020
Titanium (Ti), % 1.3 to 1.6
0.020 to 0.25
Tungsten (W), % 0
3.0 to 4.4
Zirconium (Zr), % 0 to 0.020
0