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SAE-AISI 4340M Steel vs. EN 2.4654 Nickel

SAE-AISI 4340M steel belongs to the iron alloys classification, while EN 2.4654 nickel belongs to the nickel alloys. There are 28 material properties with values for both materials. Properties with values for just one material (7, 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 2.4654 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 6.0
17
Fatigue Strength, MPa 690
460
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 72
77
Shear Strength, MPa 1360
770
Tensile Strength: Ultimate (UTS), MPa 2340
1250
Tensile Strength: Yield (Proof), MPa 1240
850

Thermal Properties

Latent Heat of Fusion, J/g 280
320
Maximum Temperature: Mechanical, °C 430
1000
Melting Completion (Liquidus), °C 1440
1390
Melting Onset (Solidus), °C 1400
1330
Specific Heat Capacity, J/kg-K 480
460
Thermal Conductivity, W/m-K 38
13
Thermal Expansion, µm/m-K 13
12

Otherwise Unclassified Properties

Base Metal Price, % relative 3.9
75
Density, g/cm3 7.8
8.4
Embodied Carbon, kg CO2/kg material 1.9
10
Embodied Energy, MJ/kg 26
150
Embodied Water, L/kg 55
340

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
190
Resilience: Unit (Modulus of Resilience), kJ/m3 4120
1810
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 84
42
Strength to Weight: Bending, points 51
31
Thermal Diffusivity, mm2/s 10
3.3
Thermal Shock Resistance, points 70
37

Alloy Composition

Aluminum (Al), % 0
1.2 to 1.6
Boron (B), % 0
0.0030 to 0.010
Carbon (C), % 0.38 to 0.43
0.020 to 0.1
Chromium (Cr), % 0.7 to 1.0
18 to 21
Cobalt (Co), % 0
12 to 15
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 93.3 to 94.8
0 to 2.0
Manganese (Mn), % 0.65 to 0.9
0 to 1.0
Molybdenum (Mo), % 0.35 to 0.45
3.5 to 5.0
Nickel (Ni), % 1.7 to 2.0
50.6 to 62.5
Phosphorus (P), % 0 to 0.012
0 to 0.015
Silicon (Si), % 1.5 to 1.8
0 to 0.15
Sulfur (S), % 0 to 0.012
0 to 0.015
Titanium (Ti), % 0
2.8 to 3.3
Vanadium (V), % 0.050 to 0.1
0
Zirconium (Zr), % 0
0.020 to 0.080