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Grade FDSiCr Steel vs. Nickel 825

Grade FDSiCr steel belongs to the iron alloys classification, while nickel 825 belongs to the nickel alloys. They have a modest 31% of their average alloy composition in common, which, by itself, doesn't mean much. There are 24 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 grade FDSiCr steel and the bottom bar is nickel 825.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 80
78
Tensile Strength: Ultimate (UTS), MPa 1930
650

Thermal Properties

Latent Heat of Fusion, J/g 270
300
Maximum Temperature: Mechanical, °C 410
980
Melting Completion (Liquidus), °C 1440
1400
Melting Onset (Solidus), °C 1400
1370
Specific Heat Capacity, J/kg-K 480
460
Thermal Conductivity, W/m-K 48
11
Thermal Expansion, µm/m-K 13
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
1.5
Electrical Conductivity: Equal Weight (Specific), % IACS 8.5
1.7

Otherwise Unclassified Properties

Base Metal Price, % relative 2.2
41
Density, g/cm3 7.7
8.2
Embodied Carbon, kg CO2/kg material 1.5
7.2
Embodied Energy, MJ/kg 20
100
Embodied Water, L/kg 48
230

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 69
22
Strength to Weight: Bending, points 44
20
Thermal Diffusivity, mm2/s 13
2.9
Thermal Shock Resistance, points 58
17

Alloy Composition

Aluminum (Al), % 0
0 to 0.2
Carbon (C), % 0.5 to 0.6
0 to 0.050
Chromium (Cr), % 0.5 to 0.8
19.5 to 23.5
Copper (Cu), % 0 to 0.12
1.5 to 3.0
Iron (Fe), % 96.5 to 97.8
22 to 37.9
Manganese (Mn), % 0.5 to 0.9
0 to 1.0
Molybdenum (Mo), % 0
2.5 to 3.5
Nickel (Ni), % 0
38 to 46
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 1.2 to 1.6
0 to 0.050
Sulfur (S), % 0 to 0.025
0 to 0.030
Titanium (Ti), % 0
0.6 to 1.2