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SAE-AISI 4340M Steel vs. EN 2.4650 Nickel

SAE-AISI 4340M steel belongs to the iron alloys classification, while EN 2.4650 nickel belongs to the nickel alloys. There are 30 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 4340M steel and the bottom bar is EN 2.4650 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 6.0
34
Fatigue Strength, MPa 690
480
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 72
80
Shear Strength, MPa 1360
730
Tensile Strength: Ultimate (UTS), MPa 2340
1090
Tensile Strength: Yield (Proof), MPa 1240
650

Thermal Properties

Latent Heat of Fusion, J/g 280
320
Maximum Temperature: Mechanical, °C 430
1010
Melting Completion (Liquidus), °C 1440
1400
Melting Onset (Solidus), °C 1400
1350
Specific Heat Capacity, J/kg-K 480
450
Thermal Conductivity, W/m-K 38
12
Thermal Expansion, µm/m-K 13
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.8
1.5
Electrical Conductivity: Equal Weight (Specific), % IACS 9.1
1.6

Otherwise Unclassified Properties

Base Metal Price, % relative 3.9
80
Density, g/cm3 7.8
8.5
Embodied Carbon, kg CO2/kg material 1.9
10
Embodied Energy, MJ/kg 26
140
Embodied Water, L/kg 55
360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
320
Resilience: Unit (Modulus of Resilience), kJ/m3 4120
1030
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 84
36
Strength to Weight: Bending, points 51
28
Thermal Diffusivity, mm2/s 10
3.1
Thermal Shock Resistance, points 70
33

Alloy Composition

Aluminum (Al), % 0
0.3 to 0.6
Boron (B), % 0
0 to 0.0050
Carbon (C), % 0.38 to 0.43
0.040 to 0.080
Chromium (Cr), % 0.7 to 1.0
19 to 21
Cobalt (Co), % 0
19 to 21
Copper (Cu), % 0
0 to 0.2
Iron (Fe), % 93.3 to 94.8
0 to 0.7
Manganese (Mn), % 0.65 to 0.9
0 to 0.6
Molybdenum (Mo), % 0.35 to 0.45
5.6 to 6.1
Nickel (Ni), % 1.7 to 2.0
46.9 to 54.2
Phosphorus (P), % 0 to 0.012
0 to 0.020
Silicon (Si), % 1.5 to 1.8
0 to 0.4
Sulfur (S), % 0 to 0.012
0 to 0.0070
Titanium (Ti), % 0
1.9 to 2.4
Vanadium (V), % 0.050 to 0.1
0