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Nickel 725 vs. EN 1.6368 Steel

Nickel 725 belongs to the nickel alloys classification, while EN 1.6368 steel belongs to the iron alloys. There are 28 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is nickel 725 and the bottom bar is EN 1.6368 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 34
18
Fatigue Strength, MPa 260
310 to 330
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 78
73
Shear Strength, MPa 580
410 to 430
Tensile Strength: Ultimate (UTS), MPa 860
660 to 690
Tensile Strength: Yield (Proof), MPa 350
460 to 490

Thermal Properties

Latent Heat of Fusion, J/g 320
250
Maximum Temperature: Mechanical, °C 980
410
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
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.5
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 1.6
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 75
3.4
Density, g/cm3 8.5
7.9
Embodied Carbon, kg CO2/kg material 13
1.7
Embodied Energy, MJ/kg 190
22
Embodied Water, L/kg 270
53

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
110
Resilience: Unit (Modulus of Resilience), kJ/m3 300
580 to 650
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 28
23 to 24
Strength to Weight: Bending, points 24
21 to 22
Thermal Shock Resistance, points 23
20

Alloy Composition

Aluminum (Al), % 0 to 0.35
0.015 to 0.040
Carbon (C), % 0 to 0.030
0 to 0.17
Chromium (Cr), % 19 to 22.5
0 to 0.3
Copper (Cu), % 0
0.5 to 0.8
Iron (Fe), % 2.3 to 15.3
95.1 to 97.2
Manganese (Mn), % 0 to 0.35
0.8 to 1.2
Molybdenum (Mo), % 7.0 to 9.5
0.25 to 0.5
Nickel (Ni), % 55 to 59
1.0 to 1.3
Niobium (Nb), % 2.8 to 4.0
0.015 to 0.045
Nitrogen (N), % 0
0 to 0.020
Phosphorus (P), % 0 to 0.015
0 to 0.025
Silicon (Si), % 0 to 0.2
0.25 to 0.5
Sulfur (S), % 0 to 0.010
0 to 0.010
Titanium (Ti), % 1.0 to 1.7
0