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SAE-AISI M44 Steel vs. Nickel 686

SAE-AISI M44 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 (10, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI M44 steel and the bottom bar is nickel 686.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
220
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 78
77
Tensile Strength: Ultimate (UTS), MPa 870 to 2290
780

Thermal Properties

Latent Heat of Fusion, J/g 270
320
Melting Completion (Liquidus), °C 1590
1380
Melting Onset (Solidus), °C 1540
1340
Specific Heat Capacity, J/kg-K 440
420
Thermal Conductivity, W/m-K 14
9.8
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Base Metal Price, % relative 43
70
Density, g/cm3 8.4
9.0
Embodied Carbon, kg CO2/kg material 9.9
12
Embodied Energy, MJ/kg 150
170
Embodied Water, L/kg 170
300

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
22
Strength to Weight: Axial, points 28 to 75
24
Strength to Weight: Bending, points 24 to 46
21
Thermal Diffusivity, mm2/s 3.7
2.6
Thermal Shock Resistance, points 27 to 70
21

Alloy Composition

Carbon (C), % 1.1 to 1.2
0 to 0.010
Chromium (Cr), % 4.0 to 4.8
19 to 23
Cobalt (Co), % 11 to 12.3
0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 65.3 to 70.6
0 to 5.0
Manganese (Mn), % 0.2 to 0.4
0 to 0.75
Molybdenum (Mo), % 6.0 to 7.0
15 to 17
Nickel (Ni), % 0 to 0.3
49.5 to 63
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.3 to 0.55
0 to 0.080
Sulfur (S), % 0 to 0.030
0 to 0.020
Titanium (Ti), % 0
0.020 to 0.25
Tungsten (W), % 5.0 to 5.8
3.0 to 4.4
Vanadium (V), % 1.9 to 2.2
0