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Nickel 725 vs. EN 1.4423 Stainless Steel

Nickel 725 belongs to the nickel alloys classification, while EN 1.4423 stainless steel belongs to the iron alloys. They have a modest 30% of their average alloy composition in common, which, by itself, doesn't mean much. There are 28 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is nickel 725 and the bottom bar is EN 1.4423 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 34
17
Fatigue Strength, MPa 260
380
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 78
77
Shear Strength, MPa 580
520
Tensile Strength: Ultimate (UTS), MPa 860
850
Tensile Strength: Yield (Proof), MPa 350
630

Thermal Properties

Latent Heat of Fusion, J/g 320
280
Maximum Temperature: Mechanical, °C 980
780
Melting Completion (Liquidus), °C 1340
1460
Melting Onset (Solidus), °C 1270
1420
Specific Heat Capacity, J/kg-K 440
470
Thermal Expansion, µm/m-K 13
9.9

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
14
Density, g/cm3 8.5
7.9
Embodied Carbon, kg CO2/kg material 13
3.2
Embodied Energy, MJ/kg 190
43
Embodied Water, L/kg 270
120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
130
Resilience: Unit (Modulus of Resilience), kJ/m3 300
1000
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 28
30
Strength to Weight: Bending, points 24
25
Thermal Shock Resistance, points 23
31

Alloy Composition

Aluminum (Al), % 0 to 0.35
0
Carbon (C), % 0 to 0.030
0 to 0.020
Chromium (Cr), % 19 to 22.5
11 to 13
Copper (Cu), % 0
0.2 to 0.8
Iron (Fe), % 2.3 to 15.3
73.8 to 80.5
Manganese (Mn), % 0 to 0.35
0 to 2.0
Molybdenum (Mo), % 7.0 to 9.5
2.3 to 2.8
Nickel (Ni), % 55 to 59
6.0 to 7.0
Niobium (Nb), % 2.8 to 4.0
0
Nitrogen (N), % 0
0 to 0.020
Phosphorus (P), % 0 to 0.015
0 to 0.040
Silicon (Si), % 0 to 0.2
0 to 0.5
Sulfur (S), % 0 to 0.010
0 to 0.0030
Titanium (Ti), % 1.0 to 1.7
0