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Nickel 725 vs. EN 1.7703 Steel

Nickel 725 belongs to the nickel alloys classification, while EN 1.7703 steel belongs to the iron alloys. 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 1.7703 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 34
20
Fatigue Strength, MPa 260
320 to 340
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 78
74
Shear Strength, MPa 580
420 to 430
Tensile Strength: Ultimate (UTS), MPa 860
670 to 690
Tensile Strength: Yield (Proof), MPa 350
460 to 500

Thermal Properties

Latent Heat of Fusion, J/g 320
250
Maximum Temperature: Mechanical, °C 980
460
Melting Completion (Liquidus), °C 1340
1470
Melting Onset (Solidus), °C 1270
1430
Specific Heat Capacity, J/kg-K 440
470
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.5
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 1.6
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 75
4.2
Density, g/cm3 8.5
7.9
Embodied Carbon, kg CO2/kg material 13
2.5
Embodied Energy, MJ/kg 190
35
Embodied Water, L/kg 270
61

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
120 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 300
570 to 650
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 28
24
Strength to Weight: Bending, points 24
22
Thermal Shock Resistance, points 23
19 to 20

Alloy Composition

Aluminum (Al), % 0 to 0.35
0
Carbon (C), % 0 to 0.030
0.11 to 0.15
Chromium (Cr), % 19 to 22.5
2.0 to 2.5
Copper (Cu), % 0
0 to 0.2
Iron (Fe), % 2.3 to 15.3
94.6 to 96.4
Manganese (Mn), % 0 to 0.35
0.3 to 0.6
Molybdenum (Mo), % 7.0 to 9.5
0.9 to 1.1
Nickel (Ni), % 55 to 59
0 to 0.25
Niobium (Nb), % 2.8 to 4.0
0 to 0.070
Nitrogen (N), % 0
0 to 0.012
Phosphorus (P), % 0 to 0.015
0 to 0.015
Silicon (Si), % 0 to 0.2
0 to 0.1
Sulfur (S), % 0 to 0.010
0 to 0.0050
Titanium (Ti), % 1.0 to 1.7
0 to 0.030
Vanadium (V), % 0
0.25 to 0.35