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Nickel 725 vs. Grade VDSiCr Steel

Nickel 725 belongs to the nickel alloys classification, while grade VDSiCr steel belongs to the iron alloys. There are 23 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

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

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.29
0.29
Reduction in Area, % 45
48
Shear Modulus, GPa 78
80
Tensile Strength: Ultimate (UTS), MPa 860
1950

Thermal Properties

Latent Heat of Fusion, J/g 320
270
Maximum Temperature: Mechanical, °C 980
410
Melting Completion (Liquidus), °C 1340
1440
Melting Onset (Solidus), °C 1270
1400
Specific Heat Capacity, J/kg-K 440
480
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.5
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 1.6
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 75
2.2
Density, g/cm3 8.5
7.7
Embodied Carbon, kg CO2/kg material 13
1.5
Embodied Energy, MJ/kg 190
20
Embodied Water, L/kg 270
48

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 28
70
Strength to Weight: Bending, points 24
45
Thermal Shock Resistance, points 23
58

Alloy Composition

Aluminum (Al), % 0 to 0.35
0
Carbon (C), % 0 to 0.030
0.5 to 0.6
Chromium (Cr), % 19 to 22.5
0.5 to 0.8
Copper (Cu), % 0
0 to 0.060
Iron (Fe), % 2.3 to 15.3
96.6 to 97.8
Manganese (Mn), % 0 to 0.35
0.5 to 0.9
Molybdenum (Mo), % 7.0 to 9.5
0
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
1.2 to 1.6
Sulfur (S), % 0 to 0.010
0 to 0.020
Titanium (Ti), % 1.0 to 1.7
0