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Nickel 690 vs. Grade N7M Nickel

Both nickel 690 and grade N7M nickel are nickel alloys. They have 65% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is nickel 690 and the bottom bar is grade N7M nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
220
Elongation at Break, % 3.4 to 34
22
Fatigue Strength, MPa 180 to 300
190
Poisson's Ratio 0.28
0.31
Shear Modulus, GPa 79
85
Tensile Strength: Ultimate (UTS), MPa 640 to 990
590
Tensile Strength: Yield (Proof), MPa 250 to 760
310

Thermal Properties

Latent Heat of Fusion, J/g 320
320
Maximum Temperature: Mechanical, °C 1010
900
Melting Completion (Liquidus), °C 1380
1650
Melting Onset (Solidus), °C 1340
1590
Specific Heat Capacity, J/kg-K 470
390
Thermal Expansion, µm/m-K 14
9.9

Otherwise Unclassified Properties

Base Metal Price, % relative 50
75
Density, g/cm3 8.3
9.3
Embodied Carbon, kg CO2/kg material 8.2
16
Embodied Energy, MJ/kg 120
200
Embodied Water, L/kg 290
270

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31 to 170
110
Resilience: Unit (Modulus of Resilience), kJ/m3 160 to 1440
220
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
22
Strength to Weight: Axial, points 21 to 33
18
Strength to Weight: Bending, points 20 to 27
17
Thermal Shock Resistance, points 16 to 25
19

Alloy Composition

Carbon (C), % 0 to 0.050
0 to 0.070
Chromium (Cr), % 27 to 31
0 to 1.0
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 7.0 to 11
0 to 3.0
Manganese (Mn), % 0 to 0.5
0 to 1.0
Molybdenum (Mo), % 0
30 to 33
Nickel (Ni), % 58 to 66
60.9 to 70
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030