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Nickel 690 vs. EN 1.4449 Stainless Steel

Nickel 690 belongs to the nickel alloys classification, while EN 1.4449 stainless steel belongs to the iron alloys. They have a modest 39% of their average alloy composition in common, which, by itself, doesn't mean much. There are 31 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is nickel 690 and the bottom bar is EN 1.4449 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 90
190
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 3.4 to 34
48
Fatigue Strength, MPa 180 to 300
240
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 79
78
Shear Strength, MPa 420 to 570
440
Tensile Strength: Ultimate (UTS), MPa 640 to 990
620
Tensile Strength: Yield (Proof), MPa 250 to 760
250

Thermal Properties

Latent Heat of Fusion, J/g 320
290
Maximum Temperature: Mechanical, °C 1010
960
Melting Completion (Liquidus), °C 1380
1440
Melting Onset (Solidus), °C 1340
1400
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 14
15
Thermal Expansion, µm/m-K 14
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.5
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 1.6
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 50
19
Density, g/cm3 8.3
7.9
Embodied Carbon, kg CO2/kg material 8.2
3.9
Embodied Energy, MJ/kg 120
54
Embodied Water, L/kg 290
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31 to 170
240
Resilience: Unit (Modulus of Resilience), kJ/m3 160 to 1440
160
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 21 to 33
22
Strength to Weight: Bending, points 20 to 27
20
Thermal Diffusivity, mm2/s 3.5
4.0
Thermal Shock Resistance, points 16 to 25
14

Alloy Composition

Carbon (C), % 0 to 0.050
0 to 0.035
Chromium (Cr), % 27 to 31
17 to 18.2
Copper (Cu), % 0 to 0.5
0 to 1.0
Iron (Fe), % 7.0 to 11
62.4 to 69.3
Manganese (Mn), % 0 to 0.5
0 to 2.0
Molybdenum (Mo), % 0
2.3 to 2.8
Nickel (Ni), % 58 to 66
11.5 to 12.5
Nitrogen (N), % 0
0 to 0.080
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.015