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EN 2.4951 Nickel vs. SAE-AISI 5140 Steel

EN 2.4951 nickel belongs to the nickel alloys classification, while SAE-AISI 5140 steel belongs to the iron alloys.

For each property being compared, the top bar is EN 2.4951 nickel and the bottom bar is SAE-AISI 5140 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
170 to 290
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 34
12 to 29
Fatigue Strength, MPa 200
220 to 570
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 76
73
Shear Strength, MPa 500
360 to 600
Tensile Strength: Ultimate (UTS), MPa 750
560 to 970
Tensile Strength: Yield (Proof), MPa 270
290 to 840

Thermal Properties

Latent Heat of Fusion, J/g 320
250
Maximum Temperature: Mechanical, °C 1150
420
Melting Completion (Liquidus), °C 1360
1460
Melting Onset (Solidus), °C 1310
1420
Specific Heat Capacity, J/kg-K 460
470
Thermal Conductivity, W/m-K 12
45
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.6
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 1.7
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 60
2.1
Density, g/cm3 8.5
7.8
Embodied Carbon, kg CO2/kg material 9.3
1.4
Embodied Energy, MJ/kg 130
19
Embodied Water, L/kg 280
49

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
76 to 180
Resilience: Unit (Modulus of Resilience), kJ/m3 190
220 to 1880
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 25
20 to 34
Strength to Weight: Bending, points 22
19 to 28
Thermal Diffusivity, mm2/s 3.1
12
Thermal Shock Resistance, points 23
16 to 29

Alloy Composition

Aluminum (Al), % 0 to 0.3
0
Carbon (C), % 0.080 to 0.15
0.38 to 0.43
Chromium (Cr), % 18 to 21
0.7 to 0.9
Cobalt (Co), % 0 to 5.0
0
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 0 to 5.0
97.3 to 98.1
Manganese (Mn), % 0 to 1.0
0.7 to 0.9
Nickel (Ni), % 65.4 to 81.7
0
Phosphorus (P), % 0 to 0.020
0 to 0.035
Silicon (Si), % 0 to 1.0
0.15 to 0.35
Sulfur (S), % 0 to 0.015
0 to 0.040
Titanium (Ti), % 0.2 to 0.6
0