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EN 2.4951 Nickel vs. Nickel 690

Both EN 2.4951 nickel and nickel 690 are nickel alloys. They have 85% of their average alloy composition in common.

For each property being compared, the top bar is EN 2.4951 nickel and the bottom bar is nickel 690.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
90
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 34
3.4 to 34
Fatigue Strength, MPa 200
180 to 300
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 76
79
Shear Strength, MPa 500
420 to 570
Tensile Strength: Ultimate (UTS), MPa 750
640 to 990
Tensile Strength: Yield (Proof), MPa 270
250 to 760

Thermal Properties

Latent Heat of Fusion, J/g 320
320
Maximum Temperature: Mechanical, °C 1150
1010
Melting Completion (Liquidus), °C 1360
1380
Melting Onset (Solidus), °C 1310
1340
Specific Heat Capacity, J/kg-K 460
470
Thermal Conductivity, W/m-K 12
14
Thermal Expansion, µm/m-K 12
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.6
1.5
Electrical Conductivity: Equal Weight (Specific), % IACS 1.7
1.6

Otherwise Unclassified Properties

Base Metal Price, % relative 60
50
Density, g/cm3 8.5
8.3
Embodied Carbon, kg CO2/kg material 9.3
8.2
Embodied Energy, MJ/kg 130
120
Embodied Water, L/kg 280
290

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
31 to 170
Resilience: Unit (Modulus of Resilience), kJ/m3 190
160 to 1440
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 25
21 to 33
Strength to Weight: Bending, points 22
20 to 27
Thermal Diffusivity, mm2/s 3.1
3.5
Thermal Shock Resistance, points 23
16 to 25

Alloy Composition

Aluminum (Al), % 0 to 0.3
0
Carbon (C), % 0.080 to 0.15
0 to 0.050
Chromium (Cr), % 18 to 21
27 to 31
Cobalt (Co), % 0 to 5.0
0
Copper (Cu), % 0 to 0.5
0 to 0.5
Iron (Fe), % 0 to 5.0
7.0 to 11
Manganese (Mn), % 0 to 1.0
0 to 0.5
Nickel (Ni), % 65.4 to 81.7
58 to 66
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.015
0 to 0.015
Titanium (Ti), % 0.2 to 0.6
0