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SAE-AISI P4 Steel vs. Nickel 825

SAE-AISI P4 steel belongs to the iron alloys classification, while nickel 825 belongs to the nickel alloys. They have a modest 36% 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 (8, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI P4 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 74
78
Tensile Strength: Ultimate (UTS), MPa 390 to 1980
650

Thermal Properties

Latent Heat of Fusion, J/g 260
300
Melting Completion (Liquidus), °C 1460
1400
Melting Onset (Solidus), °C 1420
1370
Specific Heat Capacity, J/kg-K 470
460
Thermal Conductivity, W/m-K 41
11
Thermal Expansion, µm/m-K 12
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.1
1.5
Electrical Conductivity: Equal Weight (Specific), % IACS 9.3
1.7

Otherwise Unclassified Properties

Base Metal Price, % relative 4.4
41
Density, g/cm3 7.8
8.2
Embodied Carbon, kg CO2/kg material 1.8
7.2
Embodied Energy, MJ/kg 23
100
Embodied Water, L/kg 68
230

Common Calculations

PREN (Pitting Resistance) 7.0
31
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 14 to 70
22
Strength to Weight: Bending, points 15 to 45
20
Thermal Diffusivity, mm2/s 11
2.9
Thermal Shock Resistance, points 13 to 64
17

Alloy Composition

Aluminum (Al), % 0
0 to 0.2
Carbon (C), % 0 to 0.12
0 to 0.050
Chromium (Cr), % 4.0 to 5.3
19.5 to 23.5
Copper (Cu), % 0 to 0.25
1.5 to 3.0
Iron (Fe), % 92.3 to 95.3
22 to 37.9
Manganese (Mn), % 0.2 to 0.6
0 to 1.0
Molybdenum (Mo), % 0.4 to 1.0
2.5 to 3.5
Nickel (Ni), % 0
38 to 46
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0.1 to 0.4
0 to 0.050
Sulfur (S), % 0 to 0.030
0 to 0.030
Titanium (Ti), % 0
0.6 to 1.2