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Nickel 725 vs. SAE-AISI 4028 Steel

Nickel 725 belongs to the nickel alloys classification, while SAE-AISI 4028 steel belongs to the iron alloys. There are 28 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 725 and the bottom bar is SAE-AISI 4028 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 34
14 to 23
Fatigue Strength, MPa 260
180 to 330
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 78
73
Shear Strength, MPa 580
310 to 380
Tensile Strength: Ultimate (UTS), MPa 860
490 to 630
Tensile Strength: Yield (Proof), MPa 350
260 to 520

Thermal Properties

Latent Heat of Fusion, J/g 320
250
Maximum Temperature: Mechanical, °C 980
400
Melting Completion (Liquidus), °C 1340
1460
Melting Onset (Solidus), °C 1270
1420
Specific Heat Capacity, J/kg-K 440
470
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.5
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 1.6
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 75
2.1
Density, g/cm3 8.5
7.8
Embodied Carbon, kg CO2/kg material 13
1.5
Embodied Energy, MJ/kg 190
19
Embodied Water, L/kg 270
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
81 to 95
Resilience: Unit (Modulus of Resilience), kJ/m3 300
180 to 720
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 28
17 to 22
Strength to Weight: Bending, points 24
18 to 21
Thermal Shock Resistance, points 23
16 to 20

Alloy Composition

Aluminum (Al), % 0 to 0.35
0
Carbon (C), % 0 to 0.030
0.25 to 0.3
Chromium (Cr), % 19 to 22.5
0
Iron (Fe), % 2.3 to 15.3
98.1 to 98.7
Manganese (Mn), % 0 to 0.35
0.7 to 0.9
Molybdenum (Mo), % 7.0 to 9.5
0.2 to 0.3
Nickel (Ni), % 55 to 59
0
Niobium (Nb), % 2.8 to 4.0
0
Phosphorus (P), % 0 to 0.015
0 to 0.035
Silicon (Si), % 0 to 0.2
0.15 to 0.35
Sulfur (S), % 0 to 0.010
0.035 to 0.050
Titanium (Ti), % 1.0 to 1.7
0