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SAE-AISI 4340M Steel vs. EN 2.4851 Nickel

SAE-AISI 4340M steel belongs to the iron alloys classification, while EN 2.4851 nickel belongs to the nickel alloys. There are 31 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 4340M steel and the bottom bar is EN 2.4851 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 710
190
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 6.0
34
Fatigue Strength, MPa 690
170
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
76
Shear Strength, MPa 1360
430
Tensile Strength: Ultimate (UTS), MPa 2340
650
Tensile Strength: Yield (Proof), MPa 1240
230

Thermal Properties

Latent Heat of Fusion, J/g 280
320
Maximum Temperature: Mechanical, °C 430
1200
Melting Completion (Liquidus), °C 1440
1360
Melting Onset (Solidus), °C 1400
1310
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 38
11
Thermal Expansion, µm/m-K 13
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.8
1.4
Electrical Conductivity: Equal Weight (Specific), % IACS 9.1
1.6

Otherwise Unclassified Properties

Base Metal Price, % relative 3.9
49
Density, g/cm3 7.8
8.2
Embodied Carbon, kg CO2/kg material 1.9
8.1
Embodied Energy, MJ/kg 26
120
Embodied Water, L/kg 55
280

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
170
Resilience: Unit (Modulus of Resilience), kJ/m3 4120
130
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 84
22
Strength to Weight: Bending, points 51
20
Thermal Diffusivity, mm2/s 10
2.9
Thermal Shock Resistance, points 70
17

Alloy Composition

Aluminum (Al), % 0
1.0 to 1.7
Boron (B), % 0
0 to 0.0060
Carbon (C), % 0.38 to 0.43
0.030 to 0.1
Chromium (Cr), % 0.7 to 1.0
21 to 25
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 93.3 to 94.8
7.7 to 18
Manganese (Mn), % 0.65 to 0.9
0 to 1.0
Molybdenum (Mo), % 0.35 to 0.45
0
Nickel (Ni), % 1.7 to 2.0
58 to 63
Phosphorus (P), % 0 to 0.012
0 to 0.020
Silicon (Si), % 1.5 to 1.8
0 to 0.5
Sulfur (S), % 0 to 0.012
0 to 0.015
Titanium (Ti), % 0
0 to 0.5
Vanadium (V), % 0.050 to 0.1
0