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SAE-AISI 4012 Steel vs. Nickel 725

SAE-AISI 4012 steel belongs to the iron alloys classification, while nickel 725 belongs to the nickel 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 SAE-AISI 4012 steel and the bottom bar is nickel 725.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 23
34
Fatigue Strength, MPa 160
260
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
78
Shear Strength, MPa 270
580
Tensile Strength: Ultimate (UTS), MPa 420
860
Tensile Strength: Yield (Proof), MPa 220
350

Thermal Properties

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

Electrical Properties

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

Otherwise Unclassified Properties

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

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 82
240
Resilience: Unit (Modulus of Resilience), kJ/m3 130
300
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 15
28
Strength to Weight: Bending, points 16
24
Thermal Shock Resistance, points 12
23

Alloy Composition

Aluminum (Al), % 0
0 to 0.35
Carbon (C), % 0.090 to 0.14
0 to 0.030
Chromium (Cr), % 0
19 to 22.5
Iron (Fe), % 98.2 to 98.9
2.3 to 15.3
Manganese (Mn), % 0.75 to 1.0
0 to 0.35
Molybdenum (Mo), % 0.15 to 0.25
7.0 to 9.5
Nickel (Ni), % 0
55 to 59
Niobium (Nb), % 0
2.8 to 4.0
Phosphorus (P), % 0 to 0.035
0 to 0.015
Silicon (Si), % 0.15 to 0.35
0 to 0.2
Sulfur (S), % 0 to 0.040
0 to 0.010
Titanium (Ti), % 0
1.0 to 1.7