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Nickel 725 vs. SAE-AISI D5 Steel

Nickel 725 belongs to the nickel alloys classification, while SAE-AISI D5 steel belongs to the iron alloys. They have a modest 22% 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 (9, in this case) are not shown.

For each property being compared, the top bar is nickel 725 and the bottom bar is SAE-AISI D5 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 34
5.4 to 14
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 78
75
Shear Strength, MPa 580
470 to 1180
Tensile Strength: Ultimate (UTS), MPa 860
770 to 2030

Thermal Properties

Latent Heat of Fusion, J/g 320
270
Melting Completion (Liquidus), °C 1340
1430
Melting Onset (Solidus), °C 1270
1390
Specific Heat Capacity, J/kg-K 440
480
Thermal Expansion, µm/m-K 13
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.5
4.2
Electrical Conductivity: Equal Weight (Specific), % IACS 1.6
4.9

Otherwise Unclassified Properties

Base Metal Price, % relative 75
13
Density, g/cm3 8.5
7.7
Embodied Carbon, kg CO2/kg material 13
3.5
Embodied Energy, MJ/kg 190
51
Embodied Water, L/kg 270
120

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 28
28 to 73
Strength to Weight: Bending, points 24
24 to 46
Thermal Shock Resistance, points 23
26 to 67

Alloy Composition

Aluminum (Al), % 0 to 0.35
0
Carbon (C), % 0 to 0.030
1.4 to 1.6
Chromium (Cr), % 19 to 22.5
11 to 13
Cobalt (Co), % 0
2.5 to 3.5
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 2.3 to 15.3
77.9 to 84.4
Manganese (Mn), % 0 to 0.35
0 to 0.6
Molybdenum (Mo), % 7.0 to 9.5
0.7 to 1.2
Nickel (Ni), % 55 to 59
0 to 0.3
Niobium (Nb), % 2.8 to 4.0
0
Phosphorus (P), % 0 to 0.015
0 to 0.030
Silicon (Si), % 0 to 0.2
0 to 0.6
Sulfur (S), % 0 to 0.010
0 to 0.030
Titanium (Ti), % 1.0 to 1.7
0
Vanadium (V), % 0
0 to 1.0