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Nickel 825 vs. SAE-AISI 1144 Steel

Nickel 825 belongs to the nickel alloys classification, while SAE-AISI 1144 steel belongs to the iron alloys. They have a modest 30% of their average alloy composition in common, which, by itself, doesn't mean much. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is nickel 825 and the bottom bar is SAE-AISI 1144 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 34
11 to 17
Fatigue Strength, MPa 190
280 to 430
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
72
Shear Strength, MPa 430
460 to 510
Tensile Strength: Ultimate (UTS), MPa 650
750 to 840
Tensile Strength: Yield (Proof), MPa 260
420 to 690

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 980
400
Melting Completion (Liquidus), °C 1400
1450
Melting Onset (Solidus), °C 1370
1410
Specific Heat Capacity, J/kg-K 460
470
Thermal Conductivity, W/m-K 11
51
Thermal Expansion, µm/m-K 14
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.5
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 1.7
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 41
1.9
Density, g/cm3 8.2
7.8
Embodied Carbon, kg CO2/kg material 7.2
1.4
Embodied Energy, MJ/kg 100
19
Embodied Water, L/kg 230
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
91 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 170
480 to 1290
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 22
27 to 30
Strength to Weight: Bending, points 20
23 to 25
Thermal Diffusivity, mm2/s 2.9
14
Thermal Shock Resistance, points 17
22 to 24

Alloy Composition

Aluminum (Al), % 0 to 0.2
0
Carbon (C), % 0 to 0.050
0.4 to 0.48
Chromium (Cr), % 19.5 to 23.5
0
Copper (Cu), % 1.5 to 3.0
0
Iron (Fe), % 22 to 37.9
97.5 to 98
Manganese (Mn), % 0 to 1.0
1.4 to 1.7
Molybdenum (Mo), % 2.5 to 3.5
0
Nickel (Ni), % 38 to 46
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.050
0
Sulfur (S), % 0 to 0.030
0.24 to 0.33
Titanium (Ti), % 0.6 to 1.2
0