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SAE-AISI 4340 Steel vs. N06045 Nickel

SAE-AISI 4340 steel belongs to the iron alloys classification, while N06045 nickel belongs to the nickel alloys. They have a modest 27% of their average alloy composition in common, which, by itself, doesn't mean much. There are 26 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 4340 steel and the bottom bar is N06045 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 12 to 22
37
Fatigue Strength, MPa 330 to 740
210
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
77
Shear Strength, MPa 430 to 770
470
Tensile Strength: Ultimate (UTS), MPa 690 to 1280
690
Tensile Strength: Yield (Proof), MPa 470 to 1150
270

Thermal Properties

Latent Heat of Fusion, J/g 250
350
Maximum Temperature: Mechanical, °C 430
1010
Melting Completion (Liquidus), °C 1460
1350
Melting Onset (Solidus), °C 1420
1300
Specific Heat Capacity, J/kg-K 470
480
Thermal Expansion, µm/m-K 13
13

Otherwise Unclassified Properties

Base Metal Price, % relative 3.5
42
Density, g/cm3 7.8
8.0
Embodied Carbon, kg CO2/kg material 1.7
6.9
Embodied Energy, MJ/kg 22
98
Embodied Water, L/kg 53
250

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 79 to 170
200
Resilience: Unit (Modulus of Resilience), kJ/m3 590 to 3490
180
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 24 to 45
24
Strength to Weight: Bending, points 22 to 33
22
Thermal Shock Resistance, points 20 to 38
18

Alloy Composition

Carbon (C), % 0.38 to 0.43
0.050 to 0.12
Cerium (Ce), % 0
0.030 to 0.090
Chromium (Cr), % 0.7 to 0.9
26 to 29
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 95.1 to 96.3
21 to 25
Manganese (Mn), % 0.6 to 0.8
0 to 1.0
Molybdenum (Mo), % 0.2 to 0.3
0
Nickel (Ni), % 1.7 to 2.0
45 to 50.4
Phosphorus (P), % 0 to 0.035
0 to 0.020
Silicon (Si), % 0.15 to 0.35
2.5 to 3.0
Sulfur (S), % 0 to 0.040
0 to 0.010