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Nickel 725 vs. EN 1.4986 Stainless Steel

Nickel 725 belongs to the nickel alloys classification, while EN 1.4986 stainless steel belongs to the iron alloys. They have 45% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is nickel 725 and the bottom bar is EN 1.4986 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 34
18
Fatigue Strength, MPa 260
350
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 78
77
Shear Strength, MPa 580
460
Tensile Strength: Ultimate (UTS), MPa 860
750
Tensile Strength: Yield (Proof), MPa 350
560

Thermal Properties

Latent Heat of Fusion, J/g 320
290
Maximum Temperature: Mechanical, °C 980
940
Melting Completion (Liquidus), °C 1340
1450
Melting Onset (Solidus), °C 1270
1400
Specific Heat Capacity, J/kg-K 440
470
Thermal Expansion, µm/m-K 13
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.5
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 1.6
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 75
25
Density, g/cm3 8.5
7.9
Embodied Carbon, kg CO2/kg material 13
4.8
Embodied Energy, MJ/kg 190
67
Embodied Water, L/kg 270
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
120
Resilience: Unit (Modulus of Resilience), kJ/m3 300
790
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 28
26
Strength to Weight: Bending, points 24
23
Thermal Shock Resistance, points 23
16

Alloy Composition

Aluminum (Al), % 0 to 0.35
0
Boron (B), % 0
0.050 to 0.1
Carbon (C), % 0 to 0.030
0.040 to 0.1
Chromium (Cr), % 19 to 22.5
15.5 to 17.5
Iron (Fe), % 2.3 to 15.3
59.4 to 66.6
Manganese (Mn), % 0 to 0.35
0 to 1.5
Molybdenum (Mo), % 7.0 to 9.5
1.6 to 2.0
Nickel (Ni), % 55 to 59
15.5 to 17.5
Niobium (Nb), % 2.8 to 4.0
0.4 to 1.2
Phosphorus (P), % 0 to 0.015
0 to 0.045
Silicon (Si), % 0 to 0.2
0.3 to 0.6
Sulfur (S), % 0 to 0.010
0 to 0.030
Titanium (Ti), % 1.0 to 1.7
0