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Nickel 690 vs. EN 1.4938 Stainless Steel

Nickel 690 belongs to the nickel alloys classification, while EN 1.4938 stainless steel belongs to the iron alloys. They have a modest 24% of their average alloy composition in common, which, by itself, doesn't mean much. There are 30 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 1.4938 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 3.4 to 34
16 to 17
Fatigue Strength, MPa 180 to 300
390 to 520
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 79
76
Shear Strength, MPa 420 to 570
540 to 630
Tensile Strength: Ultimate (UTS), MPa 640 to 990
870 to 1030
Tensile Strength: Yield (Proof), MPa 250 to 760
640 to 870

Thermal Properties

Latent Heat of Fusion, J/g 320
270
Maximum Temperature: Mechanical, °C 1010
750
Melting Completion (Liquidus), °C 1380
1460
Melting Onset (Solidus), °C 1340
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 14
30
Thermal Expansion, µm/m-K 14
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.5
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 1.6
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 50
10
Density, g/cm3 8.3
7.8
Embodied Carbon, kg CO2/kg material 8.2
3.3
Embodied Energy, MJ/kg 120
47
Embodied Water, L/kg 290
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31 to 170
140 to 160
Resilience: Unit (Modulus of Resilience), kJ/m3 160 to 1440
1050 to 1920
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 21 to 33
31 to 37
Strength to Weight: Bending, points 20 to 27
26 to 29
Thermal Diffusivity, mm2/s 3.5
8.1
Thermal Shock Resistance, points 16 to 25
30 to 35

Alloy Composition

Carbon (C), % 0 to 0.050
0.080 to 0.15
Chromium (Cr), % 27 to 31
11 to 12.5
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 7.0 to 11
80.5 to 84.8
Manganese (Mn), % 0 to 0.5
0.4 to 0.9
Molybdenum (Mo), % 0
1.5 to 2.0
Nickel (Ni), % 58 to 66
2.0 to 3.0
Nitrogen (N), % 0
0.020 to 0.040
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0 to 0.5
0 to 0.5
Sulfur (S), % 0 to 0.015
0 to 0.015
Vanadium (V), % 0
0.25 to 0.4

Comparable Variants