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Nickel 725 vs. EN 1.7701 Steel

Nickel 725 belongs to the nickel alloys classification, while EN 1.7701 steel belongs to the iron alloys. There are 22 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 nickel 725 and the bottom bar is EN 1.7701 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 78
73
Tensile Strength: Ultimate (UTS), MPa 860
670 to 2010

Thermal Properties

Latent Heat of Fusion, J/g 320
250
Maximum Temperature: Mechanical, °C 980
420
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
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 1.6
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 75
2.6
Density, g/cm3 8.5
7.8
Embodied Carbon, kg CO2/kg material 13
1.9
Embodied Energy, MJ/kg 190
26
Embodied Water, L/kg 270
52

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 28
24 to 71
Strength to Weight: Bending, points 24
22 to 45
Thermal Shock Resistance, points 23
20 to 59

Alloy Composition

Aluminum (Al), % 0 to 0.35
0
Carbon (C), % 0 to 0.030
0.48 to 0.56
Chromium (Cr), % 19 to 22.5
0.9 to 1.2
Iron (Fe), % 2.3 to 15.3
96.2 to 97.7
Manganese (Mn), % 0 to 0.35
0.7 to 1.1
Molybdenum (Mo), % 7.0 to 9.5
0.15 to 0.3
Nickel (Ni), % 55 to 59
0
Niobium (Nb), % 2.8 to 4.0
0
Phosphorus (P), % 0 to 0.015
0 to 0.025
Silicon (Si), % 0 to 0.2
0 to 0.4
Sulfur (S), % 0 to 0.010
0 to 0.025
Titanium (Ti), % 1.0 to 1.7
0
Vanadium (V), % 0
0.1 to 0.2