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EN 2.4951 Nickel vs. SAE-AISI P21 Steel

EN 2.4951 nickel belongs to the nickel alloys classification, while SAE-AISI P21 steel belongs to the iron alloys. There are 23 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is EN 2.4951 nickel and the bottom bar is SAE-AISI P21 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 76
73
Tensile Strength: Ultimate (UTS), MPa 750
1130

Thermal Properties

Latent Heat of Fusion, J/g 320
250
Melting Completion (Liquidus), °C 1360
1450
Melting Onset (Solidus), °C 1310
1410
Specific Heat Capacity, J/kg-K 460
470
Thermal Conductivity, W/m-K 12
41
Thermal Expansion, µm/m-K 12
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.6
7.9
Electrical Conductivity: Equal Weight (Specific), % IACS 1.7
9.0

Otherwise Unclassified Properties

Base Metal Price, % relative 60
6.5
Density, g/cm3 8.5
7.9
Embodied Carbon, kg CO2/kg material 9.3
2.3
Embodied Energy, MJ/kg 130
32
Embodied Water, L/kg 280
62

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 25
40
Strength to Weight: Bending, points 22
31
Thermal Diffusivity, mm2/s 3.1
11
Thermal Shock Resistance, points 23
37

Alloy Composition

Aluminum (Al), % 0 to 0.3
0
Carbon (C), % 0.080 to 0.15
0.18 to 0.22
Chromium (Cr), % 18 to 21
0 to 0.5
Cobalt (Co), % 0 to 5.0
1.1 to 1.3
Copper (Cu), % 0 to 0.5
0 to 0.25
Iron (Fe), % 0 to 5.0
92.1 to 94.2
Manganese (Mn), % 0 to 1.0
0.35 to 0.72
Nickel (Ni), % 65.4 to 81.7
3.9 to 4.3
Phosphorus (P), % 0 to 0.020
0 to 0.030
Silicon (Si), % 0 to 1.0
0.2 to 0.4
Sulfur (S), % 0 to 0.015
0 to 0.030
Titanium (Ti), % 0.2 to 0.6
0
Vanadium (V), % 0
0.15 to 0.25