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Nickel 725 vs. SAE-AISI M48 Steel

Nickel 725 belongs to the nickel alloys classification, while SAE-AISI M48 steel belongs to the iron alloys. There are 19 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is nickel 725 and the bottom bar is SAE-AISI M48 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 78
78
Tensile Strength: Ultimate (UTS), MPa 860
890 to 2390

Thermal Properties

Latent Heat of Fusion, J/g 320
260
Melting Completion (Liquidus), °C 1340
1670
Melting Onset (Solidus), °C 1270
1620
Specific Heat Capacity, J/kg-K 440
420
Thermal Expansion, µm/m-K 13
12

Otherwise Unclassified Properties

Base Metal Price, % relative 75
48
Density, g/cm3 8.5
8.7
Embodied Carbon, kg CO2/kg material 13
13
Embodied Energy, MJ/kg 190
190
Embodied Water, L/kg 270
160

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
22
Strength to Weight: Axial, points 28
28 to 76
Strength to Weight: Bending, points 24
23 to 45
Thermal Shock Resistance, points 23
26 to 71

Alloy Composition

Aluminum (Al), % 0 to 0.35
0
Carbon (C), % 0 to 0.030
1.4 to 1.5
Chromium (Cr), % 19 to 22.5
3.5 to 4.0
Cobalt (Co), % 0
8.0 to 10
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 2.3 to 15.3
63.8 to 69.8
Manganese (Mn), % 0 to 0.35
0.15 to 0.4
Molybdenum (Mo), % 7.0 to 9.5
4.8 to 5.5
Nickel (Ni), % 55 to 59
0 to 0.3
Niobium (Nb), % 2.8 to 4.0
0
Phosphorus (P), % 0 to 0.015
0 to 0.030
Silicon (Si), % 0 to 0.2
0.15 to 0.4
Sulfur (S), % 0 to 0.010
0 to 0.030
Titanium (Ti), % 1.0 to 1.7
0
Tungsten (W), % 0
9.5 to 10.5
Vanadium (V), % 0
2.8 to 3.3