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Nickel 686 vs. SAE-AISI H42 Steel

Nickel 686 belongs to the nickel alloys classification, while SAE-AISI H42 steel belongs to the iron alloys. There are 21 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 SAE-AISI H42 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
200
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 77
77
Tensile Strength: Ultimate (UTS), MPa 780
700 to 1980

Thermal Properties

Latent Heat of Fusion, J/g 320
260
Melting Completion (Liquidus), °C 1380
1620
Melting Onset (Solidus), °C 1340
1570
Specific Heat Capacity, J/kg-K 420
440
Thermal Conductivity, W/m-K 9.8
24
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Base Metal Price, % relative 70
24
Density, g/cm3 9.0
8.4
Embodied Carbon, kg CO2/kg material 12
8.8
Embodied Energy, MJ/kg 170
130
Embodied Water, L/kg 300
98

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 22
23
Strength to Weight: Axial, points 24
23 to 65
Strength to Weight: Bending, points 21
21 to 42
Thermal Diffusivity, mm2/s 2.6
6.5
Thermal Shock Resistance, points 21
20 to 57

Alloy Composition

Carbon (C), % 0 to 0.010
0.55 to 0.7
Chromium (Cr), % 19 to 23
3.8 to 4.5
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 0 to 5.0
79.3 to 83.8
Manganese (Mn), % 0 to 0.75
0.15 to 0.4
Molybdenum (Mo), % 15 to 17
4.5 to 5.5
Nickel (Ni), % 49.5 to 63
0 to 0.3
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 0.080
0
Sulfur (S), % 0 to 0.020
0 to 0.030
Titanium (Ti), % 0.020 to 0.25
0
Tungsten (W), % 3.0 to 4.4
5.5 to 6.8
Vanadium (V), % 0
1.8 to 2.2